# William

Most popular questions and responses by William
1. ## Lo

Suggest how attitude and safety skills may deal with the impact of environmental factors at a personal level.

2. ## math

what are the 5 number combo in 1 to 39

3. ## Art

1. Why would an artist chose to use harmony in a piece of artwork? 2. Perspective drawings will utilize all methods listed here except? 3. To create an image that is not harmonious, an artist could...?

Are these correct? I mark my answer with an X. 88. The reason to list all of the preliminary (non-procedural) information in a lesson plan is to be sure have considered each aspect. keep good records for your future needs. be able to communicate clearly

5. ## Chemistry

Gold is alloyed with other metals to increase its hardness in making jewelry. Consider a piece of gold jewelry that weighs 9.85 g and has a colume of 0.675 cm cubed. The jewelry contains only gold and silver, which have densities of 19.3 g/cm cubed and

6. ## English

@ words : 1- curtail 2- devastate 3- digress 4- incentive 5- incorporate 6- indispensable 7- intermittent 8- rigor 9- squander 10-succumb Linda never had to work hard to make good grades in high school. But in college, where the ___(8)___ of course work

7. ## help me physics

The femur is a bone in the leg whose minium cross-sectional area is about 3.60 E-4 m2. A compressional force in excess of 6.90 E4 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. 1 N/m2 (b) What is the strain that exists

8. ## Geometry

In trapezoid $ABCD$, $\overline{AB}$ is parallel to $\overline{CD}$, $AB = 7$ units, and $CD = 10$ units. Segment $EF$ is drawn parallel to $\overline{AB}$ with $E$ lying on $\overline{AD}$ and $F$ lying on $\overline{BC}$. If $BF:FC = 3:4$, what is $EF$?

9. ## Calculus

The table below gives selected values for the function f(x). Use a trapezoidal estimation, with 6 trapezoids to approximate the value of 2∫1 f(x) dx . x 1 1.1 1.3 1.6 1.7 1.8 2.0 f(x) 1 3 5 8 10 11 14

10. ## Chemistry

What mass of H2 gas would be formed when 2.45 g Zn reacts with excess acetic acid? Zn (s) + 2 HC2H3O2 (aq) ------> H2 (g) + Zn (C2H3O2)2(aq)

11. ## Finance

Winnebagel Corp. currently sells 33,000 motor homes per year at $49,500 each, and 13,200 luxury motor coaches per year at$93,500 each. The company wants to introduce a new portable camper to fill out its product line; it hopes to sell 23,100 of these

12. ## History Help?

What role did Stephen Austin play in the settlement of Texas by American colonists? He defeated Santa Anna's army, making it safe for colonists in the region. He convinced American colonists in Texas to declare their independence from Mexico. He received a

13. ## Chemistry

A compound containing 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide and water. What element should you look at first in balancing this equation? A. oxygen

14. ## arrays

Rock bands often stack their speakers in an array. One teen band has 24 speakers. They stack them at least 2 high, but no taller than 8 high. What are all the different arrays they can make.

15. ## Trig application

I can't figure this out. A famous golfer tees off on a long, straight 459 yard par 4 and slices his drive 10 degrees to the right of the line from tee to the hole. If the drive went 288 yards, how many yards will the golfer's second shot have to be to

16. ## united staes history

what generalization can you make about the abolition of slavery in the north?

17. ## math

The surface area covered by a rectangular playground is 100 square yards. The width of the playground is 15 yards longer than its length. Using factors, find the length and the width of the playground.

18. ## arrays

One band has fewer than 40 speakers. They stack them in a array exactly 9 high. How many speakers could they have? Explain how you know.

19. ## Math

A, B, C and D are four points on a line such that AB:AC = 7:10, and BD:CD = 9:2. If CD = 9 cm, what is the length, in cm, of AB? A) 49 B) 64 C) 54.25 D)73.25 E)70

20. ## Tirginometry

the expression 4ab(square root of)2b-3a(square root of)18b^3+7ab(square root of)6b is equivalent to... (a)2ab(square root of)6b (b)16ab(square root of)2b (c)-5ab+7ab(square root of)6b (d)-5ab(square root of)2b+7ab(square root of)6b Please help its due

21. ## life orientation

define risky behaviours

22. ## geometry

In triangle $ABC$, $BC = 4$, $AC = 3 \sqrt{2}$, and $\angle C = 45^\circ$. Altitudes $AD$, $BE$, and $CF$ intersect at the orthocenter $H$. Find $AH:HD$. I tried using the pythagorean theorem to find side lengths, algebraically, but I couldn't find

23. ## Chemistry

Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO?

24. ## Calculus

For Questions 1–2, use the differential equation given by dy/dx = xy/3, y > 0. 1. Complete the table of values x -1 -1 -1 0 0 0 1 1 1 y 1 2 3 1 2 3 1 2 3 dy/dx 2. Find the particular solution y = f(x) to the given differential equation with the initial

25. ## Physical Science

An exercise spring has a spring constant of 315 N/m. How much work is required to stretch the spring 30 cm? What force is needed to stretch the spring 30 cm?

26. ## Combining Inequalities

Some treasure has been buried at a point(x,y)on the grid, where x and y are whole numbers. Here are three clues to help you to find the treasure: Clue 1:x>2 Clue 2:x+y0

27. ## Physics

A flea can jump a vertical height h. What is the maximum horizontal distance it can jump? What is the time in the air in both cases?

28. ## calculus

The circumference of a sphere was measured to be 74 cm with a possible error of 0.5 cm. (a) Use differentials to estimate the maximum error in the calculated surface area. (Round your answer to the nearest integer.) cm2 What is the relative error? (Round

29. ## geometry

The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ? Use the distance formula to help you decide: .

30. ## Ap Chemistry

Can anyone help me with this question How much NaCl should be added to 0.35 L of a 0.15 M solution of AgNO3 so that it reacts completely with the silver to form AgCl(s)? A. 8.8 g B. 0.0525 g C. 0.89 mg D. 3.07 g

31. ## math

if a polynomial leaves a remainder of 5 when divided by x-3 and a reminder of -7 when divided by x+1, what is the reminder when the polynomial is divided by x^2-2x-3?

32. ## Chemistry

A sample of calcario and other components of the soil was intensely warm. Under these conditions, the calcario undergoes decomposition in calcium oxide and carbon dioxide. CaCO3 (s)-> CaO (s) + CO2 (g) The analysis of 71, 42 g of a sample of limestone

33. ## math

What is the value of the underline digit 6 in 4,600,028

34. ## science

An electric train moving at 20kgh-1 accelerate to a speed of 30kgh-1 in 20s.find the distance travel in meters during the period of acceleration.

35. ## english

who should I choose on call of the wild

36. ## chemistry

how many grams of Na2CO3 must be dissolved into 155 g of water to create a solution with the molality of 8.20 mol/kg?

I just cannot figure out if these answers are correct or not. Can you please help me? 78. If the sound system hadn’t failed, last night’s show would have been better. This is a correct sentence using the 1st conditional form. x This is a correct

75. ## physics

A piece of metal at 80 degrees celsius is placed in 1.2 L of water at 72 degrees celsius. The system is thermally isolated and reaches a final temperature of 75 degrees celsius. Estimate the approximate change in entrophy for this process.

76. ## math

Suppose that a crayon weighs the same as a marker. You have a box of crayons, 4 extra crayons, and 20 markers. Let b be the number of crayons in the box. A scale balances with all the crayons on one side and all the markers on the other. You remove markers

77. ## Science

Which of the following is true about an object that floats in water? (1 point) The object is less dense than frozen water. The mass of the object is less than that of water. The density of the object is less than that of water. The volume of the water is

78. ## chemistry

Calculate the volume of hydrogen gas from the C4H9O3N compound, under temperature or pressure conditions (STP).

79. ## chemistry

A 0.8552g sample of copper alloy is treated with 8 molar nitric acid and filtered and the precipitate is ignited giving a residue of 0.0632g of SnO2. The zinc is determined in one half of the filterate by precipitating it as ZnNH4PO4 and then igniting with

80. ## math

Explain whether the following statement is true or false: “The ordered pair (1,5) is the same as the order pair (5,1).”

81. ## Chemistry

100 grams of glucose is mixed with 500 grams of water. 10 grams of yeast is then added to the mixture. If the reaction goes to completion, what is the mass of ethanol in the final mixture?

82. ## tech math

Each cylinder bore of a cylinder engine has a diameter of 2.50in. and a height of 4.90 what is the combined total surface area of all four cylinder?

83. ## chemistry

An ore contains Fe3O4 and no other iron. The iron in a 65.46 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 37.9 grams. What was the percent Fe3O4 in the sample of ore? Answer in

84. ## Algebra 1

A right triangle has 1 leg that is 2" longer than the other leg. the length of the hypotenuse is sqrt 130" Find lengths of legs 0=2x^+4x-126

85. ## social studies

Which of the following best describes the difference between a keyword and subject search? Please make selection! A keyword search uses subject headings, but a subject search does not A subject search can retrieve false hits, but a keyword search does not

86. ## physics

Three identical balls are thrown from a cliff of height, h, above a horizontal plane. One ball is thrown at an angle of 45 degrees above the horizon, the second is thrown horizontally, and the third is thrown at an angle of 30 degrees below the horizon

87. ## biology

There are two methods used for cutting DNA into small pieces – this is via ultrasound and restriction enzymes. Which method is considered better and why?

The activity of a sample of Ba-137m has decreased by 75% from its initial activity after 5.10 minutes. What is the half-life of Ba-137m? What fraction of activity remains after 6.25 minutes? (A=Aoe (-kt); k = .693/t1/2)

89. ## geometry

a block prism has a volume of 36 cubic units, what is the least and greatest surface area it could have

90. ## ICS

I need help solving this question. "Two charges are 10 meters apart. The charge on the positive particle is 1.0 C and the negative charge is 10 Coulombs. Calculate the magnitude of the electrostatic force of attraction between these two charges."

91. ## Trig/PreCalc

Find a parametrization for the line segment with endpoints (5,2) and (-2, -4).

92. ## Physics

A 5.7 g bullet leaves the muzzle of a riﬂe with a speed of 636.8 m/s. What constant force is exerted on the bullet while it is traveling down the 0.5 m length of the barrel of the riﬂe? Answer in units of N

93. ## Vectors, Math

A is (3, 2) and point B is 4 units from A in the direction (1,-1) Find AB(arrow). Find the coordinates of B. I can't do this question, Ive attempted it many times.

94. ## religion

The Middle East is the spiritual homeland for all of the following world religions EXCEPT

95. ## 7th grade pre algebra

We need assistance solving 3 + 2(k+1) = 6 + 3k I know the 2(k+1) has to become 2k + 2 then we have 3 + 2k + 2 = 6 + 3k then we can subtract 3k from both sides to get 3 +2k + 2 - 3K = 6 But can I combine the 3+2 on the left and the 2k - 3k to get -1k?

96. ## science

0,0,3,4,5,7,8,9,36

97. ## phusics

A car can slow down at 5.10 m/s2 without skidding when coming to rest on a level road. What would its acceleration be if the road were inclined at 12o uphill?

98. ## math

find the product or quotient. write the strategy you used, write model, break apart, multiplication table, inverse operations, pattern, or doubles

99. ## Math - Calculus

Show that the equation x^3-15x+c=0 has at most one root in the interval [-2,2].