# Questions Asked onOctober 18, 2016

1. ## algebra

Kevin decides to mix grades of gasoline in his truck. He puts in 5 gallons of regular and 10 gallons of premium for a total cost of \$61.30. If premium gasoline costs \$0.22 more per gallon than regular, what was the price of each grade of gasoline?

2. ## physics

two forces with magnitude of 25N and 18N respectively are inclined at an angle of 120degree to each other. calculate the resultant force and the angle it makes with the 18N force.

asked by okowju Destiny
3. ## math

Two aeroplanes fly eastwards on parallel courses 12 miles apart. One flies at 240 m.p.h. and the other at 300 m.p.h. How fast is the distance between them changing when the slower plane is 5 miles farther east than the faster plane?

4. ## math

A ladder rests against a vertical pole. The foot of the ladder is sliding away from the pole along horizontal ground. Find the inclination of the ladder to the horizontal at the instant when the top of the ladder is moving 3 times as fast as the foot of

5. ## English

Some have more than a hundred and some have none, its very colourful and you see it every morning someone please tell me the answer

6. ## Math

The density of water at 21 degrees C is 0.997992 g/mL. The density of water at 22 degrees C is 0.997770 g/mL. What is the density of water if the room temperature is 21.3 degrees C?? So I would just multiply 30 percent of the density at 21 degrees C but

7. ## MATH

Write the distance y across the flat sides of a hexagonal nut as a function of r.

8. ## Chemistry

if the density of 2-butanol is 0.80g ml-1, what volume of 2-butanol would be produced from 1kg of butene

9. ## physics

If the momentum of one object changes in a system that is subject to no net external force, what else must happen? 1) Collisions with other objects will change its momentum back. 2) The momenta of the other objects in that system change in the same way. 3)

10. ## math

Solve each problem and write your answers in scientific notation. 1. (6.0 x 105) x (3.0 x 104) = (1 point) 18 x 1020 18 x 109 1.8 x 1020 1.8 x 1010 2. (5 x 10–2) ÷ (2 x 103) = (1 point) 2.5 x 10-5 2.5 x 10-1 25 x 101 25 x 102 3. (2.56 x 106) x (3.56 x

asked by awesome guy
11. ## crop physiology

How will you prepard o.5m, 1.0m, 2m & 4.0m solution of NaCl for 100ml

12. ## physics

You have a mass of 84 kg. How fast (in mph) would you have to run to have the same momentum as an 18-wheeler (m = 28,000 kg) rolling along at 1 mph

13. ## Chem

A gas at pressure 912 mm of hg has volume of 450 cm3 what will be volume at 0.4 atm

14. ## physics

a particle is projected horizontally at 15m/s from a height of 20m calculate the horizontal distance covered by the particle just before hitting the ground (g=10m/s square)

15. ## physics

A particle is drop from a vertical height (h) and falls freely for a time(t) with the aid of a sketch explain how (h) varies with (I) t (ii) t square

16. ## Maths

30 grams of a breakfast cereal provides 16.2mg of vitamin C. This is 24% of the recommended daily intake. What daily intake of vitamin C is recommended?

17. ## physics

Two identical boxcars (m = 14866 kg) are traveling along the same track but in opposite directions. Both boxcars have a speed of 5 m/s. If the cars collide and couple together, what will be the final speed of the pair?

18. ## math

The upper chamber of an hour-glass is a cone of radius 3 inches and height 10 inches and, if full, it requires exactly one hour to empty. Assuming that the sand falls through the aperture at a constant rate, how fast is the level falling when: a) the depth

19. ## math

A man 6 feet tall walks along a walkway which is 30 feet from a the base of a lamp which is 126 feet tall. The man walks at a constant rate of 3 feet per second. How fast is the length of his shadow changing when he is 40 feet along the walkway past the

20. ## physics

A particle is drop from a vertical height (h) and falls freely for a time (t) with the aid of a sketch explain how (h) varies with (i) t (ii) t*2

21. ## math

Algebra 1) 11x + 2y - 4x - y 2) 9x + 2y -5x what i did in no. 2 is subtract 9 and 5 then add 2... please correct mw if i am wrong

22. ## math

algebra sorry i posted again 3) -(2x + 7) what i don't get is that what to do with 7 because it has no variable...

23. ## math

The ratio of two numbers is 3:5, the smallest number is 45 what is the larger number?

24. ## Differentiation

3x5+3x3-5 this question answer 15x4-9x2

25. ## Geometric progression

Three numbers whose sum is 15 are in a.p. if 1,4,19 be added to them respectively the resulting number are in g.p find n

26. ## Geometric progression

If the continued product of three numbes in g.p. is 216 and the sum of their products in pair is 156. find the numbers.

27. ## Geometric progression

If for a g.p. S2=8 and s4=80,find its first term and the common ratio.

28. ## Differentiation

y=log(logx) sir this question answer 1/x log x

29. ## Math

There is a football field and the length shows 120 yd and the width is 53 1/3 yd a. What are the dimensions of a football field in feet? b. A chalk line is placed around the perimeter of the football field. What is the length of this line in feet? c. About

30. ## Maths

A plane flies a course of 346 degrees and then turns through 30 degrees in the clockwise direction. Find its new bearing. Since the plane from starting point covers a bearing of 346 degrees it's now going to be in the NW direction but going 30 more degrees

31. ## Math

1/50 change fraction to a decimal

32. ## physics

a particle is projected horizontally at 15m/s from a height of 20m calculate the horizontal distance covered by the particle just before hitting the ground (g=10m/s*2)

33. ## Physics

a piano string has a length of 2m and a density of 8,000kg/m3. when the tension in the string produces a strain of 1%, the fundamental note obtained is 170 Hz. calculate the modulus of elasticity for the material of the string.

34. ## Maths

A company is planning to manufacture and sell a new headphone set. After conducting extensive market surveys, the research department provide the following estimates: Marginal costs function: c^' (x)=RM(40+0.4x) where x is the quantity sold for the fixed

35. ## Math

If one side of triangle measures 3.5 dm. What is the perimeter

36. ## Chemistry

Gives isomeric compound of C3 H8 O woth IULAC names

asked by Khan Hanzala
37. ## Physics

Okay,so you need to fill in the blank. 'Violet light travels at a _____ speed within the glass block than the red light' Thanks for answering! and sorry for my brain lacking physical sense Faylon

38. ## Science Earth

Label the year and name of each geologic area on your geologic time scale. Using the 1 cm = 10 million years scale, figure out and measure each distance below from the PRESENT line. Pre-Cambrian Era = 4.6 Billion years ago = _______________________ cm from

39. ## Science, Math

I'm going to use 1 mm to represent 1 million years. 1 bya 2 byaM 3 bya 4 bya 4.6 bya What would be these numbers?

40. ## Algebra

New Orleans has highest elevation of 25, lowest -8. Long Beach has highest 360, lowest -7. Which city has an average elevation of -2?

41. ## math

How many square feet of carpet will be needed to cover the kitchen and bedroom floors? 237.5 square feet 365 square feet 425 square feet 475 square feet

A division of a corporation manufactures bicycle pumps. Each pump sells for \$9, and the variable cost of producing each unit is 40% of the selling price. The monthly fixed costs incurred by the division are \$50,000. What is the break-even point for the

43. ## Physics

Two identical boxcars (m = 14866 kg) are traveling along the same track but in opposite directions. Both boxcars have a speed of 5 m/s. If the cars collide and couple together, what will be the final speed of the pair?

44. ## Math help please!

New Orleans has highest elevation of 25, lowest -8. Long Beach has highest 360, lowest -7. Which city has an average elevation of -2? How do you calculate that?

45. ## CHEMISTRY HELP PLEASEEEE

Sulfuric acid is a diprotic acid, strong in the first ionization step and weak in the second (Ka2=1.1X10^-2). Using appropriate calculations, determine whether it is feasible to titrate 10.00mL of 0.1 M H2SO4 to two distinct equivalence points with 0.1 M

46. ## Please explain (Math)

The demand equation for a certain brand of GPS Navigator is x + 3p - 565 = 0, where x is the quantity demanded per week and p is the wholesale unit price in dollars. The supply equation is x - 16p + 480 = 0, where x is the quantity the supplier will make

47. ## Math help

Find the break-even point for the firm whose cost function C and revenue function R are given. C(x)=0.3x+140; R(x)=0.5x a. P(680)=340 b. P(700)=350 c. P(690)=345 d. P(720)=360 e. P(710)=355 thank you

asked by Kal Jay
48. ## Math

For the pair of supply-and-demand equations, where x represents the quantity demanded in units of 1,000 and p is the unit price in dollars, find the equilibrium quantity and the equilibrium price. p = - 2x + 15 and p = 5x + 1 a. equilibrium quantity 4,000

49. ## Physics

A jet pilot (80 kg) flies a loop-de-loop at a constant speed of 600 m/s. a) What minimum radius can the loop have so that the centripetal acceleration is no more than 6ag? b) Suppose that the pilot just happened to be sitting on a spring scale while flying

50. ## Physics

A passenger on a ride at the firemen's field days sits in a chair and is swung around at the end of a cable connected to a central tower. At full speed, the cable makes an angle of 56o with the vertical, and the chair is 46 m from the pole. 1)What is the

51. ## Math

a snail was at the bottom of a well in the first ten minutes the snail climbed 2 and 7/12m in the next ten minutes it climbed 1 and 5/7m how far was the snail from the bottom of the well after 20 minutes?

52. ## Physics

You have a mass of 84 kg. How fast (in mph) would you have to run to have the same momentum as an 18-wheeler (m = 28,000 kg) rolling along at 1 mph

53. ## Physics

A coach is hitting pop flies to the outfielders. If the baseball (mass=145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 79 m/s, what is the average force actions on the ball?

54. ## Calculus

A right circular cone has a volume of 100 cubic inches. What shape should it be in order to have the smallest lateral surface area? Find the results of the volume is V cubic inches.

55. ## Calculus

A right circular cone has a volume of cubic inches. What shape should it be in order to have the smallest lateral surface area? Find the result of the volume is V cubic inches.

56. ## biology

someone please help me im confused and idk what im doingg how would i create a dna molecule model using straws, pushpins, and paperclips? help me, please.

57. ## CALC

Find the mass and center of mass of the lamina that occupies the region D and has the given density function ρ. D is the triangular region with vertices (0, 0), (2, 1), (0, 3); ρ(x, y) = 5(x + y) m=? (x,y)=?

58. ## CALC

Find the mass and center of mass of the lamina that occupies the region D and has the given density function ρ. D is bounded by y =sqrt(x), y = 0, and x = 1; ρ(x, y) = 27x m=? (x,y)=?

59. ## Physics

A brass rod of 0.2 kg at 100degree Celsius is dropped into 0.5 kg of water at 20 degree Celsius. The final temperature of the mixture is 23 degree Celsius.calculate the specific heat capacity of brass(specific heat capacity of Water is 4200 j/kg degree c

60. ## math

the sum of all numbers 1-100

61. ## math

the sum of 2+4+6...800

62. ## math

find the number of terms 14,21,28,35.....6293

63. ## math

the integers from 1 to 1000 are printed on a list. how many times does the digit 8 appear?

64. ## Algebra 2

Lesson 4: Linear Programming Unit 4 Linear Systems 1. (B) 5,0 2. (A) 8,0 3. (B) 6,2 4. (C) P=6 5. (D) P=29/1/3 6. (C) C=633/1/3 7. (A) 3 trays of corn muffins and 2 trays of bran muffins 8. (C) P= 400 9. (B) C= 67,370 10. (A) P= 51 10/10 (100%)

65. ## Physics

I had eye surgery and missed 2 weeks of lectures here is an example question of what we are learning Inwas wondering if someone can explain to me how to solve it? Two constant forces act on an object of mass m = 5.00 kg object moving in the xy plane as

asked by Keef sosa
66. ## physics (urgent)

A cricket ball is thrown at a speed of 30ms^-1 in a direction 30 degrees above the horizontal. Calculate: 1. The maximum height. 2. The time taken to return to the same level. 3. The distance from the thrower to where the ball returns to the same level.

asked by Saphina AlMatary
67. ## physics (urgent)

A car of mass 1000kg is travelling along a straight flat road at a constant speed of 30.0ms^-1. It then accelerates with constant acceleration of 3.00ms^-2 for 10.0s, after which it continues to travels at a constant speed. Determine: (a) The final speed

asked by Saphina AlMatary
68. ## physics (urgent)

onsider the following velocity time graph: (I sent a separate link of the picture as it wouldnt allow me to send it in this box) a)Describe the motion of the object from time t_0 to time_1. b)List two pieces of information (other than speeds or velocities)

asked by Saphina AlMatary
69. ## Math

my sister is 5 years elder than me if my age is x years then what will be my sisters age write the age in terms of 'x'

70. ## science

The process that does not involve oxidationis

asked by veetrag nahar
71. ## math

if a coffee cup has a diameter of 2.5in then what is the cup's circumference?

72. ## Biology

I'm making a study guide for this class and I'm not sure about this question.. can someone give their input? There is another effect that fertilizer had on an aquatic system. What is that called? I think it may be referring to pollution?

73. ## Maths

Were do the brackets go to make this equation true. 23+4=10🤓

74. ## physics

a sled mass of 50kg is pulled horizontally over flat ground. the static friction coefficient is .30, and the sliding friction coefficient is .10. what minimum amount of force must be applied to the sled in order to start it moving? i got 147.15N what

75. ## Calc

Find the mass and center of mass of the lamina that occupies the region D and has the given density function ρ. D is the triangular region with vertices (0, 0), (2, 1), (0, 3); ρ(x, y) = 5(x + y) m=? (x,y)=?

76. ## Calc

Evaluate the following integral using three different orders of integration. *triple integral E (xz − y3) dV, where E = (x, y, z) |  −1 ≤ x ≤ 3, 0 ≤ y ≤ 4, 0 ≤ z ≤ 3

77. ## Calc

Evaluate the triple integral. SSS(triple integral T 3x^2 dV where T is the solid tetrahedron with vertices (0, 0, 0), (1, 0, 0), (0, 1, 0), and (0, 0, 1)

78. ## Calc

Use a triple integral to find the volume of the given solid. The tetrahedron enclosed by the coordinate planes and the plane 8x + y + z = 4

79. ## Calc

Use a triple integral to find the volume of the given solid. The solid enclosed by the cylinder x^2 + y^2 = 9 and the planes y + z = 19 and z = 2.

80. ## algebra

The big square is divided into nine congruent small squares. x+Y+Z=

81. ## Chemistry

Write the balanced equations for the reactions: a) Reduction of Ag+ Ions with metal Fe. b) Oxidation of metal Mg with Cu2+ ion.

82. ## Physics

If the pole-vaulter were to land on concrete rather than on a cushion, the impulse that stops the fall would be what? A) Greater because of the rigidity of the concrete. B) Greater because of the force of impact is greater. C) The same because impulse is

83. ## MATH

A man 6 feet tall walks along a walkway which is 30 feet from a the base of a lamp which is 126 feet tall. The man walks at a constant rate of 3 feet per second. How fast is the length of his shadow changing when he is 40 feet along the walkway past the

84. ## math

the perimeter of the quadrilateral is 49 centimeters. find the length of each side. when the sides are x+8 x+4 4x-3 & x^2-3x

85. ## Algebra

Simplify the following expression Z-2z+4z+6

86. ## physics

A rectangular loop of wire is placed next to a straight wire, as shown in Fig. 20–55. There is a current of 3.5 A in both wires. Determine the magnitude and direction of the net force on the loop

87. ## Math

Mr. Josie's investment decreased 25% in value. By what percent should its value increase so it can get back to its original value?

88. ## Chemistry

A student measures the molarity of a solution of sodium hydroxide as 0.247M. He leaves the solution in a beaker overnight and then titrates the solution again. This time he is surprised to get a result of 0.225M. Why should he have expected something of

89. ## Algebra

I need same help for Algebra class some time is defunct for me that why I need help but every day if they help I will do

90. ## MATH

The upper chamber of an hour-glass is a cone of radius 3 inches and height 10 inches and, if full, it requires exactly one hour to empty. Assuming that the sand falls through the aperture at a constant rate, how fast is the level falling when: a) the depth

91. ## Tx History

What was the fate of the mission San Francisco De Los Tejas? A. It was abandoned and burned down by the priests and soldiers that lived there. B. It was abandoned but left in good shape so that it could be used later. C. It was destroyed by angry Hasinai

asked by PLS HELP
92. ## science

What is the speed of motorist B? By what percentage did motorist A increase his speed for the second hour from the first hour? What is the speed of motorist A for the second hour? When motorist B reached his destination,how far behind was motorist A?

93. ## statistics

A naturalist leads whale watch trips every morning in March. The number of whales seen has a Poisson distribution with a mean of 2.1 Find the probability that on a randomly selected​ trip, the number of whales seen is 3. Round to four decimal places.

94. ## social studies (NEED HELP QUICK)

Unstable government holds back economic development most in a. Namibia b. Botswana c. Somalia d. South Africa my answer: d

95. ## Math

In a parallelogram abcd,if angle a =(2x+25) and angle b = (3x_5),find the value of x and the measures of each angle of the parallelogram

96. ## Math

In a parallelogram abcd,if angle a =(2x+25) and angle b = (3x_5),find the value of x and the measures of each angle of the parallelogram

97. ## Math

In a parallelogram abcd,if angle a =(2x+25) and angle b = (3x_5),find the value of x and the measures of each angle of the parallelogram

98. ## social studies (NEED HELP QUICK)

What was the effect of diversity in Darfur a. NGOs b. Apartheid c. Nationalism d. genocide my answer: c

99. ## Home economics

What is consumer education in economics

100. ## Tx History

What is the best way to describe the the main problem of mission San Francisco de Los Tejas? A. There were not enough priests or missionaries to do a thorough job to convert the Hasinai. B. It took too much of a militaristic and violent approach to

101. ## Math (NEED HELP NOW PLEASE)

During the basketball game, Jen made 4 times as many shots as she missed. If she made 12 shots, how many shots did she miss? My guess: 3 * 4 = 12 shots total so 3 are missed. I do not want to teach this wrong. Please help.

asked by Sub Teacher

suppose a triangle has an area of 10ft^2. IF the base of the triangle is 1 foot longer than the height of the triangle, what are the lenghts of the base and height?

103. ## Math

The sides of a rectangular field are in the ratio 9:7 and the perimeter is 144 metres. Find the sides.

Three consecutive odd intergers are such that the sum of the squares of the first two integers is 54 more than 20 times the third integer. Determine the three integers.

105. ## geography

the c0orn belt of the united states stretches from Ohio to Nebraska.

106. ## Physics trajectory

A ball rolls off a deck at a speed of 0.7 m/s. The deck is 4.5m above the street. How long does it take for the ball to reach the street?

107. ## Math

factor completely 1- x/x-5 + 7x/x^2-3x-10 Please and Thank you

108. ## physics

On a roller coaster, a student experiences an apparent weight of 1250 N while accelerating at 2.3 m/s^2 [U]. What is the students mass?

109. ## math

A quilter wants to use as many of his 50 small fabric squares as possible to make one large square quilt. The quilter can use _ small squares to make his square quilt.

110. ## hunter

how many grams of oxygen are required to burn 5.9g of C2H5OH? Molar masses: C2H5OH= 45.06 g/mole O2= 32.0 g/mole

111. ## bmcc

which of the following is an oxidation reduction reaction ?

112. ## pyhsics

a parachutist of total mass 75 kg jumps from an aeroplane moving at a speed of 60m/s at a height of 900 m above the ground. Her parachute reduce the speed of descent to 5m/s. calculate the decrease in her gravitational potential energy store as a result of

113. ## Language Arts

Which of the following correctly revises the the sentence so that it is entirely in the active voice? A. It has been decided by the school that the regular teacher should not evaluate the class; instead, the assessment should be performed by a visiting

114. ## Math

Imagine a triangle with a line extending out of it, I know two of the angles are 63° and 60°. I know the missing angle in the triangle is 57. The angle 57 is next to the line with the missing angle. But I am solving for angle m1. How do I solve this or

115. ## math

On a 28-question test, there are 2-point questions, 4-point questions, and 5-point questions. The test is worth a total of 100 points. There are twice as many 2-point questions as 5-point questions on the test. How many 2-point questions are on the test?

116. ## Physics

A 5 N ball is connected to two identical springs with spring constants k = 1.0 × 10^1 N/cm that push/pull in opposite directions and slides on a friction less surface. The ball is initially stationary and is then moved a distance x= 7 cm to the right and

117. ## maths

how many tens in2017

118. ## MATH

Two poles are 24 metres and 30 metres high and 20 metres apart. A slack wire joins the tops of the poles and is 32 metres long. A cable car is moving along the wire at 5 metres per second away from the shorter pole. When the car is 12 metres horizontally

119. ## math help

suppose a triangle has an area of 10ft^2. IF the base of the triangle is 1 foot longer than the height of the triangle, what are the lenghts of the base and height? Please help and show work

120. ## Social Studies

what were some reasons for the french and indian war? Select all that apply A:French and british both wanted control of Ohio river valley B:French and british fought over control of Indian Fur trade C:The French wanted to take control of the Louisiana that

suppose a triangle has an area of 10ft^2. IF the base of the triangle is 1 foot longer than the height of the triangle, what are the lenghts of the base and height? please help and show work so i understand how to do it

122. ## Chemistry

How many moles of magnesium chloride are in 5.43 x 10^24 formula units of magnesium chloride?

123. ## sign language

can someone help me with sign language please!! 1)_____ of the American Manual Alphabet hand-shapes are formed to resemble the letter they represent A)All B)some C)None 2)what are two main parts of forming signs? A) forming words with your lips and

124. ## maths

take 30cm from 3/4 metre

125. ## SS

1. The U.S. Constitution calls for how many branches of government? (1 point) two three*** four five 2. Which of the following responsibilities are held by the legislative, rather than the executive, branch? Select all that apply. (2 points) writing and

126. ## financial math

Rate: 7% Payments: 360 @ \$665.31 Total Interest: \$139,511.60 How much will be repaid for this loan? \$ 239,511.60239,502.40100,000.00 What percentage of this total is total interest? 60.256.258.2 What will be the average amount per payment for interest? \$

127. ## math

the tallest woman who ever lived cast a shadow of 10 feet while a 3 foot vertical stick cast a shadow of 3' 11". how tall was the woman to the nearest inch?

128. ## physics

g varies from 0 N to 70.4 N as we stretch the spring by moving one end 5.35 cm from its unstressed position. Find the force constant of the spring

129. ## GENERAL PHYSICS

An electric motor rotating a grinding wheel at 100 rev/min is switched off. With constant negative angular acceleration of magnitude 2rad/second squared, how long does it take the wheel to stop?

130. ## SOCIAL STUDIES Check answer

Which of the following is a reason for the start of the war of 1812? A) congress placed an embargo on US shipping B) the XYZ affair caused tensions with Britain C) the US was in dispute with Great Britain over the Northwest Territories***** D) Great

131. ## science

What are the similarities and differences between the three major wind systems? Thanks!

132. ## physics

Identify the force that propels a rocket. 1)The rocket is propelled by the reaction force of the exhaust gasses bouncing off the air molecules outside the rocket. 2)The rocket is propelled because the action force of the rocket on the exhaust gases is

133. ## labor

What demands would most likely be advocated by union leaders interested in obtaining contract ratifications

134. ## CHEM 1411

What volume (in mL) OF 0.0215M HBr solution is be required to titrate 0.235L of a 0.0150M Ca(OH)2 solution? Ca(OH)2+2HBr= CaBr2+2H2O

asked by JACI WINLOW
135. ## English

1. Please come to see me in the afternoon, when I will be free. 2. Please come to see me in the afternoon, and I will be free then. 3. Please come to see me in the afternoon, for I will be free then. 4. Please come to see me in the afternoon, and then I

136. ## English

1. I went to Texas, where I stayed for a week.﻿ 2. I went to Texas, and I stayed there for a week. 3. I went to Texas, and there I stayed for a week.﻿ ------------------------------------- Can we use both #2 and #3 as the similar ones to #1?

137. ## Chemistry

What volume of 17 M sulfuric acid must be used to prepare 0.15 L of 1.78 M H2SO4?

138. ## Chemistry

Solid AgNo3 is added slowly to solution of 0.001M Cl,Br,and I a) at what concentration of Ag will AgI precipitating? at what concentration of Ag will AgCl precipitating? at what concentration of Ag will AgBr precipitating? b) calculate the percent % of I

139. ## Chemistry

I Just don't know what to do, I think I understand, but im not sure because all of the compounds are liquid. I would know how to do it if they were aqueous, and just the water is liquid, but they are all liquid. Determine the acid dissociation constant for

140. ## English

1. This is the way he did it. 2. This is how he did it. 3. This is the way in which he did it. 4. This is the way by which he did it. -------------------------------- Are they all grammatical? Can we use 'by' instead of 'in'?

141. ## Physics

If a wave has a frequency of 10 Hertz, what does this mean? Thanks.

142. ## Physics

Examples of transverse and longitudinal waves. Thank You

143. ## CHEM 1411

What mass of Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCl according to the following equation: 2Ga+ 6HCl= 2GaCl3+3H2

asked by JACI WINLOW
144. ## chem 1411

what mass of H2 is produced by the reaction of 118.5 mL of a 0.8775M solution of H3PO4 according to the following equation: 2Cr+2H3PO4= 3H2+2CrPO4

asked by JACI WINLOW
145. ## CHEM 1411

A student isolated 25.4g of a compound following a procedure that would theoretically yield 100.1g what was their percent yield?

asked by JACI WINLOW
146. ## Chemistry

A 1.75 gram perfect cube of wood has a side measure of 2.45 cm, what is the density of the wood?

147. ## chem 1411

A combustion analysis of a 0.00134g sample (CxHy) of a hydrocarbon yields 0.00375g of CO2 and 0.00164g of H2O. What is the empirical formula of the hydrocarbon?

asked by JACI WINLOW
148. ## chem 1411

what is the oxidation state of In in In2s3?

asked by JACI WINLOW
149. ## math

The sides of a rectangle are consecutive odd integers. If the perimeter is 192 inches, what is the length of each side?

150. ## Mathematics

If we require a margin of error of x% for the sample size n, express n in terms of x.

151. ## math

7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at \$2.25 each to meet that goal? Write and solve an inequality. a. 2.25k (greater than or equal to) 180; k (greater than or

152. ## chem 1411

What volume (in mL) of a 0.750M solution of hydrochloric acid can produced by the reaction of 25.0g of NaCl with an excess of sulfuric acid? NaCl+H2SO4= HCl+ NaHSO4

asked by JACI WINLOW
153. ## Science

If a wave has a frequency of 10 Hertz, what does this mean? Thanks.

154. ## CHEM 1411

A 0.4550g solid mixture containing CaSO4 dissolved in water and treated with an excess of Ba(NO3)2, resulting in precipitation of 0.6168g of BaSO4. What is the concentration ( weight percent) of CaSO4 in the mixture?

asked by JACI WINLOW
155. ## Math

Jose had \$2.20 in nickles and dimes. He has eight more nickles than dimes. How many of each coin does he have?

156. ## Math

If eudora needs a total of 12 pieces of the shorter ribbon, how many more pieces of the ribbon does she need

157. ## Math

fill in the symbols including brackets to make this statement correct 8 2 4 3 = 42

158. ## Physics

A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 7.0 m/s at the end of 3.0 s. At that instant, the kinetic energy of the system is 60 J and each mass has moved a distance of 10.5 m. Determine the

159. ## Chemistry

Determine the mass of 18.7mL of rubbing alcohol with a density of 0.79 g/mL? - I got 14.77. I'm not sure I'm right. If someone could clarify I'd appreciate it! Thanks!

160. ## chemistry

A student melts 50.0 grams of ice using 16650 J of energy. What is the heat of fusion of ice?

161. ## Chemistry

Determine the volume of a 67.5g piece of aluminum with density of 2.70 g/mL? -I know V=M/p and this is what I came up with but I'm not sure i'm correct.. p = 2.7 g/cm3 M = 67.5 g V = 25 cm3 3√ V = 2.9240177382129 cm

162. ## chemistry

Ethyl alcohol has a heat of vaporization of 850. J/g. What mass of ethyl alcohol can be boiled using 15000 J of energy?

163. ## chemistry

Gold has a latent heat fusion of 64.5 J/g. How much energy is required to melt 20.0 g of gold?

164. ## Math

a family budgets 1/2 of its income for housing and 1/3 for food what fraction of their budget do these expenses cover

165. ## History

How does the story of the pandavas in the mahabharata relate to aryan history? the story provides a sense of the battles between rival aryan tribes the story shows us the aryan concept of the ideal king the story reveals that the aryans believed that duty

166. ## math

Hi, When I'm making a graph, how do I know what scale to use? I often struggle with this. Does the origin always have to start at 0? But then I don't know what intervals to use. Is there a rule of thumb? I'm referring to things like scatter plots and

167. ## Math

Two 2 1/2 inch plastic strips and two 5 1/3 inch plastic strips are used to form a rectangle. What is the Perimeter of the rectangle?

168. ## Math

An 8.5 centimeter green bean pod contains peas that average 0.45 centimeter in diameter. How many peas are in the pod

169. ## Math

What is 5/12 divided by 3/4

170. ## English

1. This is why you did it. 2. this is how you did it. ------------------- In these sentences, 'why' or 'how' is a relative adverb. Are both interrogative adverbs or relative adverbs?

171. ## English

1. Tell me the reason why you came late. 2. Tell me why you came late. (In #1, 'why' is a relative adverb. In #2, 'why' is a relative adverb or an interrogative adverb. Is that right?) 3. This is how he solved the problem. (In this sentence, 'how' is a

172. ## Math

A team plays 120 matches each year. In it's first year, the team won 45% of it's matches. The next year the team won 55% of it's matches. How many more games did the team win in the 2nd year than in the first year?

173. ## math

A wedding cake must be kept in a refrigerator at a temperature of at least 41*F but no more than 52*F. Write an inequality for the temperature, w, at which the cake can be kept.

174. ## Chemistry

1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation?

175. ## Math

Allison ran 3 l/2 Miles on Monday on Wednesday she ran 1 1/3 times as far as she ran on Monday how far did she run on Wednesday

176. ## English

1. In the Red Badge of Courage, for what exploit was the youth praised by the colonel? for carrying the flag for getting the enemy's flag for rallying the men to fight*** 2. In The Red Badge of Courage, the description of Wilson changes from what to what?

asked by Eagle Man
177. ## Chemistry

Solid AgNo3 is added slowly to solution of 0.001M Cl,Br,and I a) at what concentration of Ag will AgI precipitating? at what concentration of Ag will AgCl precipitating? at what concentration of Ag will AgBr precipitating? b) calculate the percent % of I

178. ## Physics

A passenger on a ride at the firemen's field days sits in a chair and is swung around at the end of a cable connected to a central tower. At full speed, the cable makes an angle of 56o with the vertical, and the chair is 46 m from the pole. 1)What is the

179. ## Physics

A jet pilot (80 kg) flies a loop-de-loop at a constant speed of 600 m/s. a) What minimum radius can the loop have so that the centripetal acceleration is no more than 6ag? b) Suppose that the pilot just happened to be sitting on a spring scale while flying

180. ## English

1. I know why she was late. 2. I wonder why she was late for school. 3. I doubt why she came back home late. 4. He told me how he got there. 5. He asked me why I didn't study. 6. He showed me how to get to the station. ------------------------ Are they all

181. ## math

3. Which of the following appears to be an irrational number? (1 point) 3.72727272… – .073303330… 4. A picture frame is 12 inches long and 9 inches wide. In inches, what is the diagonal length of the picture frame? (1 point) 21 inches 15 inches 8

182. ## Mathematics

There are 5 girls more than boys in a class. if 2 boys joined the class the ratio of girls to boys is 5:4. find the total number of student in the class.

183. ## Math

A truck was packed with cartons each containing packets of 500g and 250g.  The total mass of the packets was 900kg. If the number of 500 packets was 1000, what was the number if 250 packets?

184. ## Algebra

You have two containers of acid solution. One is 30% acid. The other is a 50% acid solution. How much of each should be added to get a 45% acid solution?

asked by Connie Esquibel
185. ## Organic Chemistry

Explain why the formation of one geometric isomer is favored over the other?

186. ## Physics

A shopper pushes a cart 50 m south down one aisle and then turns 90.0° west and moves 12 m. He then makes another 90.0° turn and moves 20 m. What is the largest possible displacement of the shopper?

187. ## Math

Where do I insert the grouping symbols for 8+12+16÷4 = 15

188. ## Ela

Reread lines 679 - 706. What do the stage directions and dialogue reveal about Mr. Frank

189. ## Math

160 is 4000% of what number

190. ## math

what are 3 ratios for 1/10?

Three consecutive odd intergers are such that the sum of the squares of the first two integers is 54 more than 20 times the third integer. Determine the three integers. Please help and show all work thank you

192. ## Math

PLEASE HELP! j + 150 x 50 is a _____ expression because _____.

193. ## math

The product of two numbers is 88.The sum of two numbers is 26. What are the numbers?

1- x/x-5+7x/x^2-3x-10 Please simplfy and show all work thank you

195. ## math

Which is the better buy? 2.9L of detergent for \$4.56 or 3.8L for \$5.78?

196. ## MATH PLEASE SHOW WORK

Three consecutive odd intergers are such that the sum of the squares of the first two integers is 54 more than 20 times the third integer. Determine the three integers. Please help and show all work thank you SHOW WORK SO I UNDERSTAND HOW TO DO IT THANK

197. ## Maths

How do you find the coordinates that the curves y= 2x^2 +5x, y=x^2+4x+12 and y=3x^2+4x-6 have in common? The answer should be (3,33) I know that you have to solve a simultaneous equations. What I've done so far: y=2x^2+5x y=x^2+4x+12 --> 2x^2+5x=x^2+4x+12

198. ## math

determine all co terminal angles that lie in the interval -4pi less thank or equal to theta less than or equal to 4pi, for the following angles. a) 3pi/2 b) -5pi/3

199. ## math

A beetle is 1.8cm long. A drawing of the beetle is made using a scale of 5:1. What is the length of the beetle in the drawing?

200. ## Math

Penelope has a birdhouse that is 4 9/10ft above the roof of her garage. She has a second birdhouse that is 5.36 ft below the roof of her garage. What is the distance between the birdhouses?

201. ## algebra

use the identity a^2+b^2=(a+bi)(a-bi) to factor 16y^2+1

202. ## math

the point P(1/2, root 3/2) lies on the unit circle. a) sketch the unit circle showing the point P and the standard position angle theta drawn to the terminal arm containing point P. b) determine the exact values of the six trigonometric ratios of theta.

203. ## Social studies

What is a definition of citizenship? -having been born in a country -being a full and equal member of a nation -having pledged to respect and support a governments's values -fulfilling all the responsibilities and having all the rights of living in a

204. ## Math

What is the additive inverse of f(x)=(x-2)^2?

205. ## economics

The investment option with the highest rate of return and highest degree of risk is

206. ## math

the point P(x, -2/3) lies on the unit circle and is in quadrant 4. a) sketch the unit circle showing the point P and the principal statndard position angel theta drawn to the terminal arm containing point P. b) determine the exact value of x. c) determine

207. ## Math

Luke is making pancakes the recipe calls for 0.5 quarts of milk and 2.5 cups of flour he has 3/8 quart of milk and 18/8 cups of flour Luke makes the recipe with his milk and flour that he has explain his error

208. ## math

Determine the exact value of the following. a) sin300 degress b) tan (-135 degrees) c)csc150 degrees d) sec45 degrees e) cos 4pi/3 f) sin (-3pi/4)

209. ## Math

When Steve woke up. His temperature was 102 degrees Fahrenheit. Two hours later it was 3 degrees lower. What was his temperature then?

210. ## Math

An elevator is on the twentieth floor. It goes down 11 floors and then up 5 floors. What floor is the elevator on now?

211. ## psychology

Which of the following statements regarding the nature of stress is true? A. Continued exposure to stress is associated with the secretion of stress-related hormones. B. Cataclysmic events such as earthquakes are, inevitably, the most devastating stressors

212. ## ELA

What are the differences and similarities between Sal And Phoebe???

213. ## physics

Two objects are positioned and moving . m 1 = 7 kg ,m 2 =11 kg, and the coefficient of kinetic friction between object 1 and the tabletop is uk = 0.14. Find the acceleration of object 2(assuming up is the positive direction) as well as the tension in the

214. ## Social studies

What three features do people use to describe weather and climate

215. ## Math

A deep-sea exploring ship is pulling up a diver at the rate of 25 feet per minute. The diver is 200 feet below sea level. How deep was the diver 10 minutes ago?

216. ## math

Rectangles ABCD and PQRS have the same length-to-width ratio. Calculate the length of rectangle PQRS rectangle abcd: L: 30 cm W: 18 cm rectangle pqrs: L: ? W: 27 cm

217. ## Math

Grandpa is 24 years more than his son Carlos. Carlos is 35 years more than his sun Antonio. All three combined is 100 years. How old is Grandpa? How old is Carlos? How old is Antonio?

218. ## physics

Identify the force that propels a rocket. 1)The rocket is propelled by the reaction force of the exhaust gasses bouncing off the air molecules outside the rocket. 2)The rocket is propelled because the action force of the rocket on the exhaust gases is

219. ## chemistry

what is the skeleton chemical equation of this? And Balanced equation. Copper (ii) chloride + Lithium --> Lithium Chloride + Copper

220. ## chemistry

what is the skeleton chemical equation of this? And Balanced equation. Copper (ii) chloride + Lithium --> Lithium Chloride + Copper

221. ## Physics

A fireman, whose weight is 500 N, slides down a pole with an constant velocity of 3 m/s. The forces that act on him are his weight pulling him down and the force of friction pulling up on him. What is the force of friction and the net force of the fire

222. ## Chemistry

When 13.0 grams of acetylene, C2H2, is reacted, what mass of water, H2O, is produced?

223. ## Algebra 1

Benito has \$6 to spend a sundae cost \$3.25 Plus \$0.65 per topping write and solve an inequality find how many toppings can he order.

224. ## Math

If the volume of a cube is 125m cubed, what is the expression for lenght of each side? I got the answer 5m cubed

225. ## Chemistry

In the laboratory you will be provided with a 1.0 x 10-5 M primary stock solution of fluorescein (MW=332.31g/mol). The calibration curve should include a blank, 0.025, 0.05, 0.075, 0.10, 0.15, and 0.25 micromolar fluorescein solutions. Since you will be

226. ## math

In a class of 60students, if the number of students who offer Maths is twice the number of students who offer English if 9 students offer both subjects and 3 students offer none of the subject, find the number of students who offer (i) maths (ii) English

227. ## Calculus integrals

(e^(3x)-2e^(2x)+(5e^x))/(e^x+1) how do I do this what is the techniques??

228. ## 8th grade math

The diameter of the sun is approximately 1.4x10 to the power 9 km and the diameter of earth is approximately 1.28 x10 to the 4th power km. About how many times earths diameter is the suns diameter. Write in scientific notation.

229. ## math

how to write the expression 25 less than 12 groups of 15? 25-12(15)... is this correct

230. ## Matg

At the start of a party, a bowl contains 16 pints of punch. Guests drink 10 1/4 pints. Then the host adds another 7 1/2 pints to the bowl. How much punch is in the bowl now?

231. ## Math

A pizza parlor has 13 different toppings available for its pizzas, and 2 of these toppings are pepperoni and anchovies. If a customer picks 2 toppings at random, find the probability that neither topping is anchovies.

232. ## Math

How many times does a palindromic number appear on a 12 hour digital clock between 12 midnight and 12 noon?

233. ## English- Urgent

I need help finding a Canadian Case that shows the benefits of Extrajudicial Measure! Please.

234. ## Calculus

A water trough is 5 m long and has a cross-section in the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 70 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.2 m3/min how fast is the

235. ## math

a recipe for fudge brownies calls for 3 5/8 cups of cocoa per bath. if you are making 2 1/2 batches, how many cups are needed?

236. ## Math

Research two satellite phone plans with a specific number of minutes a month. Create a linear equation to represent the monthly bill based on both the flat fee and the per minute cost. Which one is the better option? Why?

237. ## Math

8 inch over 3 feet ratio simplest form

238. ## math

I need to come up with some ideas of things that have interesting linear relationships. I understand that a linear relationship is something that has a straight line, so is growing or declining at a constant amount every time period, or mile, or whatever,

239. ## Algebra

Tire pressure is directly proportional to temp on a temp scale where zero degrees is absolute zero. given that temp in degrees celcius and degrees Fahrenheit are related by the formula F=9/5C +32 and absolute zero is -273.15C, by what % does tire pressure

240. ## Chemistry

You are handed a well insulated container holding about 100ml of water at a temp between 75 deg C and 100 deg C. you are given a thermometer with a maxmimum temp of 50 deg C. create an experiment to determine the temp of the water. i am really confused on

241. ## Science

I need to make a story about digestive system and the story need to begin with a piece of food..plsssss help

242. ## G.p.

The su three numbers in g.p. is 21 and the sum of their squares is 189 find the numbers.

243. ## physics

A 10uf capacitor is charged from a 30v supply and then connected across an uncharged 50uf capacitor.Calculate a. The final potential difference across the combination b. The final and initial energies

244. ## English

Help! I have to write a research paper and I have no idea how to start... please help me.

245. ## Arithmetic progression

Which term will be 27 of the sequence 5,7,9,11,....: Sir this question answer 10 how it possible i am confused

246. ## English

Can I use "one" for past tense in writing a technical paper such as engineering lab. Ex. So one can see the rocks form.

247. ## Math

Anne Mary makes 1 3/4 pounds of Trail Mix and packages it into 2/3 pound bags share with her friends how many bags of Trail Mix does she have? Using a tape diagram.

248. ## Math

An average sized dog weighs about how many grams

249. ## physics

A 1120 kg car rolling on a horizontal surface has a speed of 60 km/hr when it strikes a horizontal coiled spring and is brought to rest in a distance of 4.5 m. What is the spring constant (in N/m) of the spring? (Ignore nonconservative forces such as

250. ## Math

Okay I understand that your ment to combine like terms but can someone help me understand this question better. Please. 9y-11-5y=25

251. ## physics

A spring has a spring constant "k" of 460 N/m. How much must this spring be compressed (in meters) to store 60 J of energy?

252. ## Math

-6h+4-3+h=11 Help

253. ## physics

An object slides down a frictionless 33 degree incline whose vertical height is 37.0 cm. How fast is it going in meters/second when it reaches the bottom?

18-x/3=-7

255. ## physics

Two railroad cars, each of mass 1800 kg and traveling 70.0 km/hr, collide head-on and come to rest. How much thermal energy in joules is produced in this collision?

256. ## AG

5. Why are congressional seats reapportioned every decade? a. to accommodate an increasing number of house members. b. to accommodate an increasing number of senators. c. to accommodate change in state populations. ******* d. to accommodate changes in the

257. ## Science

I need to make a story about digestive system and the story need to begin with a piece of food..plsssss help

258. ## chemistry

0.350 L of 0.470 M H2SO4 is mixed with 0.300 L of 0.250 M KOH. What concentration of sulfuric acid remains after neutralization?

259. ## chemistry

Calculate the number of Li atoms in 3.0 moles of Li. Express your answer using two significant figures.

260. ## chemistry

Calculate the number of CO2 molecules in 7.30×10−2 mole of CO2. Express your answer using three significant figures.

261. ## chemi

Calculate the moles of Cu in 8.4×1021 atoms of Cu. Express your answer using two significant figures.