# Sami

Popular questions and responses by Sami
1. ## Calculus

Tony's blood pressure can be modelled using the function P(t)=1000(sin t)(e^-2t), where 0 ≤ t ≤ 2 minutes. His body is stabilized after reaching a high. What is the highest blood pressure(nearest whole number) reached?

2. ## calculus

consider the function y=(ax+b)/(cx+d), where a,b,c,and d, are constants, a,c cannot equal 0. determine the horizontal and vertical asymptotes of the graph

3. ## Calculus

Describe how you would use the second derivative to determine a local maximum or minimum.

4. ## calculus

For f(x) = 2x^3- − 3x^2 − 12x + 21, find where f'(x) = 0, and the intervals on which the function increases and decreases.

5. ## Calculus

Tony is picked up by an ambulance, which moves in a straight line with position given by s(t)=2t^3 - 9t^2 + 12t - 5 metres, where t is the time in seconds. Determine the time intervals where the ambulance's speed is increasing

6. ## Calculus

c) Knowing Tony is injured, they need to travel the shortest distance possible back to a road. They are located at (4,11), towards which road should they head and how far will they need to walk to reach this road? here's a picture of the previous

7. ## physics

A car moving with an initial speed v collides with a second stationary car that is 46.0 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 37.7 percent of the original speed. Calculate the final

8. ## Maths proportions

1) Nine milk bottles contain 4.5 litres of milk between them.How much do five bottles hold? 2) A shopkeeper can buy 36 toys for \$20.52. What will he pay for 120 toys? 3) Three men can build a wall in 10 hours. How many men would be needed to build the wall

9. ## PHYSICS HELP!!!!!!!

You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started?

10. ## biology

In a cross between a white-eyed female fruit fly and red-eyed male, what percent of the female offspring will have white eyes? (White eyes are X-linked, recessive)

11. ## Math

Two 6-sided dice are rolled at the same time. How many outcomes correspond to the event that the sum of the numbers is 5?

12. ## English

Which of the following is not an object of satire in "a contribution to the statistics'? A. The self importance of social studies B. The corruption of the powerful C. Thee pride of mankind D. The delusions of common people

13. ## Math

Point Y (-1,-3) is rotated 180° about the origin. What are the coordinates of it's image, point Y'. I keep getting (-1,-3) but that's not a choice. I'm not sure what I'm doing wrong, can someone help? These are the choices listed (-3,-1) (-3,1) (1,3)

14. ## Geometry (Please check my work)

A segment has endpoints M(6,15) and N(-3,9). The image of the segmen for a dilation with center (0,0), has endpoints M'(2,5)and N (-1,3). What is the scale factor of dilation? A. 2

15. ## biology

Could a man with type B blood and a woman with type AB blood produce a child with type O blood? Explain

16. ## Physics

A 60kg man standing on a stationary 40kg boat throws a 0.2kg ball with a velocity of m/s. Assuming there is no friction between the man and the boat, what is the speed of the boat after the man throws the ball?

17. ## Maths-Proportions

1) An aircraft flying at 500 km/h completes a journey in 8.4 h. How long would the journey take if it flew at a speed of 420 km/h? 2) Jackie can drive to work in 18 mins if he travels at an average speed of 35 m.p.h. How long will the journey take if she

18. ## physics

Three identical uniform meter sticks are placed on the floor. The first stick lies along the y axis from y = 0.320 m to y = 1.32 m. The second stick lies along the x axis from x = 0.330 m to x = 1.33 m. The third stick is positioned so that one end is on

19. ## Algebra

find the x and y intercepts: 3x - 2y = -12 i know for the x intercept, put y=0 in the equation,s olve for x. For the y intercept, do the reverse. But i still don't understand how to solve it. Its just majorly fustrating me. And i can't go to school and ask

20. ## physics

A positive point charge = 2.1×10−5 is fixed at the origin of coordinates, and a negative point charge = −5.4×10−6 is fixed to the axis at . abeer abdullah Part A Find the location of the place along the axis where the electric field due to these

21. ## math

I'm having trouble determining when you divide and when you multiply to solve a scientific notation problem. For example: Assume that there are 20,000 runners in the New York City marathon. Each runner runs a distance of 26 miles. If you add together the

22. ## science

I cannot figure out how to convert 35 atm to degrees fahrenheit. Could you help me please?

List the steps required to be able to view each font to the selected type? I cant find the answers for that.

24. ## Chemistry

When an electric current passes through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183 C and the other has a boiling point of -253 C. Has a physical change or chemical change occurred? Explain. I think

25. ## Georgia History

1. Which of the following describes the Puritans? A) didn't have much success as planters B) made Sunbury into a thriving port*** C) came from the backcountry of Virginia D) came from Pennsylvania by way of North Carolina 2. Georgia’s slave code was

26. ## math

You roll a number cube twice. Find the probability of the event in fraction form. -Rolling a 4 then an even number -Rolling a 3 then a 3 -Rolling a number less than 1 and then a number less than 2

27. ## physics

A positive charge of 0.0001258 C experiences a force of 0.3 N when located at a certain point. What is the electric field magnitude at that point? Answer in units of N/C.

28. ## physics

Three point charges, two positive and one negative, each having a magnitude of 30 µC are placed at the vertices of an equilateral triangle (43 cm on a side). What is the magnitude of the electrostatic force on one of the positive charges? The value of the

29. ## physics

How much positive charge is in 0.8 kg of neon? The atomic weight (20.1797 g) of neon contains Avogadro’s number of atoms, with each atom having 10 protons and 10 electrons. The elemental charge is 1.602 × 10−19 C and Avogadro’s number is 6.023 ×

30. ## chemistry

A gas has a mass compostion of 20.8% nitrogen, 25.8% oxygen, 28.4% carbon dioxide and 25 % hydrogen. Determine its average molecular weight.

31. ## Maths Income Tax

1) A man with an income of \$7500 and allowance of \$1800, paid \$1824 in tax. What is the rate of taxation? 2) Mr Green earns \$95 per week and has allowances of \$ 2450. Mrs Patel earns \$19400 per annum and has allowances of \$3680. They both pay all their tax

32. ## medical coding

A patient is admitted to the hospital for chest pains due to tachycardia. While in the hospital, the patient was also treated for type 1 diabetes. Upon further review, the coder noted that the documentation and ekg didn, t provide further evidence of the

33. ## Physics

Review Conceptual Example 11 before attempting this problem. An empty capacitor is connected to a 9V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (k=3)is inserted between the plates. (a)

34. ## Science

Why does an ion have an electrical charge?

35. ## help me!

is -5 a real #? rational #? irrational #? whole #? integer? counting (natural) #?

36. ## Algebra

how do you find the slope that passes through the points (0,-4) and (3,-2)

37. ## Social Studies

what is the code of the Hummurrabi.? and if possible can i have examples?

38. ## science

Which family/group does the element neon belong to.

39. ## Chem ques.

How do I know if a molecule is polar or nonpolar?

40. ## math

How do I convert 35.2 ft^2 to cm^2 using dimensional analysis? ie, what are the steps when you have units squared?

41. ## math

When writing an expression, is it correct to write 15,000 - 583.33x or -583.33(x) + 15,000? I have seen both but I have a friend who insists one is the correct one.

42. ## math

I'm working on a problem where I was given a table and had to find the exponential equation of best fit. The table is about the number of views of videos. The equation is y = 12.0143(1.7498)^x I had to estimate the number of views after 2 weeks and that is

43. ## math

Write the equation of a line that goes through (5,3) and (2,7) I found the slope of the line to be -4/3 Then, I substituted one of the points in for x and y to be: y = -4/3x + b 3 = -4/3(5) + b 3 = -20/3 + b 3 + 20/3 = b This is where I am stuck == do I

44. ## Math

If I roll a die 6 times, how many 5's do I expect to get? I know if I rolled it one time I would have a 1 in 6 chance of getting a 5, but how do I determine how many I would expect to get if I roll it 6 times?

45. ## physics

A pilot of an aeroplane flying at 300km\hr wishes to release a package of mail at the right position so that it hits the spot. What angle (theta) should his line of sight to the target make the instant of release at 150 metre.

46. ## economics

A firm's total cost is Tc=40+100Q-420Q^2+30Q^3. Find the unit of production at which average variable cost at minimum.

What other information must be given in order to be able to prove the two triangles congruent by ASA? i.imgsafe(.)org/c64c59dad9.jpg 1. T=S 2. P=S 3. P=R

48. ## chemistry

A 9.35 gram of ring with it's volume of 0.654 cm3 is an alloy of gold and with density of gold and silver respectively 19.3 g/cm3 and 10.5 g/cm3 assume there is no change in volume when pure metals are mixed. The volume of gold is?

49. ## Math

So my teacher marked this 0/6 but only told me to correct 2 things. Can some one check over this? If I'm right I need to email my teacher.. Complete the two column proof. Given:

50. ## History

Which of the following is important when a primary scheduled as heavily front-loaded as it was in 2008? A. A clear stance on the issues B. The ability to raise money C. A comprehensive general election strategy D. A steady, slow building following with the

51. ## Geometry (Please check my work)

Find the image of O (-2,-1) after two reflections, first across the line y=-5, and then across the line x=1. I believe the answer should be (-1,-6) Can someone please confirm?

52. ## Math

Another question I'm a bit confused on.. What is the angle of the rotation about C the maps the solid figure to the dashed figured? tinypic(.)com/r/2utnvoo/9 Choices: 90°

53. ## History

What is the main reason some people believe there should not be any limits on presidential terms? A. There should be a monarch instead of a president. B. The people should decide how long a president can serve in a democracy.

54. ## Algebra 1

Simplify the difference (-7p^4+4p^3+6)-(3p^3-5p+3) I removed the parenthesis and changed the addition and subtraction signs to their opposites on the second set; -7p^4 + 4p^3 + 6 - 3p^3 + 5p - 3. When I combined the like terms, I was able to simplify the

55. ## 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

56. ## Algebra 1

Is this a polynomial? 15x – 12 + 4x I'm pretty sure it is a polynomial, am I right?

57. ## Science

What does Asimov predict will happen to earth in billions of years? a. it will be burned up by the sun b. its population will increase*** c. it will shrink slightly in size d. it will change position in the galaxy Am I correct?

58. ## Algebra 1

Identify the initial amount a and the growth factor b in the exponential function. f(t)=1.4^t A)a = 1, b = 0.4 B)a = 1.4, b = 0 C)a = 1.4, b = t D)a = 1, b = 1.4*** Is this correct? If I'm wrong can you please explain why, thanks! (=

59. ## Math

I have determine if these are area or volume simply based on looking at them without doing the calculations. Could you please explain how to do that? 1. pi(4 in)^3 is in the numerator 3 is in the denominator 2. 2pi(1.5m)^2 + 2pi(1.5m)(3m) 3.

60. ## biology

Albinism (lack of pigment) is caused by a recessive allele in humans. If normal parents have an albino child, what is the probability that their next child will be normal for pigment?

61. ## esl

change the underlined nouns to pronouns. We well give it to our childern.

62. ## physics

an inclined plane, which slopes at 37degree is used to raise a 10 kg object to a heghit of 4m if the efficency is 80% determine a,the load (t@ke sin 37=0.6,cos 37 =0.8) b,the cofficent of kinetic friction c,the effort force

63. ## Math

The espionage is use only an associative property to rewrite the expression: (mq) * n My teacher says the correct answer is m * (qn) but could the answer also be (nm) * q or m * (mq) or q * (mn)?

64. ## Geometry

I'm a little confused about what a Pythagorean Triple is. As long as your two legs are both whole numbers, isn't every one a triple?

65. ## Math

I just want to make sure I have done this correctly. (10a^3b)(3ab^2c^2) = 30a^4b^3c^2

66. ## Math - Could Someone Check My Work?

Could someone check my work please? Thank you! (14a^2b)(2ab^2c) = 28a^3b^3c (a^25)^7 = a^125 6x^6 ∙ 6x^6 = 36^12 (2x^2)^3 = 8x^6 (-2)0 = 1 30x^20/(6x^9 = 5x^11 4x^5 ∙ 6x^6 = 24x^11 (2x^4)^3 = 8x^12 -4^2 = -16 -(193)^0 = -1 (-193)0 = 1 (-5)2 = 25

67. ## math

What is the difference between B as in the longer base of a trapezoid and b as in base in terms of geometry?

68. ## math

Is -4 to the zero power still 1 since all numbers to the zero power are 1 or is it negative 1?

69. ## physics

An electric field of magnitude 3640 N/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.166 m wide and 0.72 m long if the plane is parallel to the yz plane. Answer in units of N · m2 /C. 435.05 N. m2/C 002 (part 2 of

70. ## Math

I have the following chart that I am supposed to find the percent increase in one step. The directions specifically say not to use a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 So I divide 12.5 by 10.5, 14.9 by 12.5, etc. When I do this (and round) I

71. ## Math

Does linear growth have to add the exact same amount each period, so a constant amount each time such as 500, 500, 500, etc, or does it just have to be close each period, such as 125, 137, 145, 160, etc?

72. ## Math

I have the following chart that I am supposed to find the percent increase in one step. The directions specifically say not to use a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 So I divide 12.5 by 10.5, 14.9 by 12.5, etc. When I do this (and round) I

73. ## Math

Does linear growth have to add the exact same amount, so a constant amount each time such as 500, 500, 500, etc, or does it just have to be close, such as 125, 137, 145, 160, etc?

74. ## math

Does linear growth have to add the exact same amount, so a constant amount, each time or does it just have to be close?

75. ## Math

I have the following chart that I am supposed to find the percent increase in one step, not using a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 When I do this (and round) I get about 19% increase for each one. (we are supposed to round. Then I have

76. ## Math

I have a triangle with equal sides. Then a s cons triangle is put in the middle so I have four triangles. Triangles are continued to be put instead so I have more and more triangles. As more triangles are added in the same space, the size of them are

77. ## physics

Find the distance between the two electrons. The value of the Coulomb constant is 8.98755 × 109 N · m2 /C 2 and the acceleration of gravity is 9.81 m/s 2 . 1. 0.507424 m 2. 50.7424 m 3. 5.07424 km 4. 5.07424 m 5. 5.07424 cm can anybody help me please

78. ## Pre-calculus

Hooke's Law states that the distance a spring will stretch beyond its natural length varies directly with the force applied to the spring. A force of 12 pounds is needed to stretch a certain spring 9 inches beyond its natural length. Find a formula that

79. ## Math

Hooke's Law states that the distance a spring will stretch beyond its natural length varies directly with the force applied to the spring. A force of 12 pounds is needed to stretch a certain spring 9 inches beyond its natural length. Find a formula that

80. ## math

Is the only difference between a ratio and a rate in a ratio the units are the same so they cancel out and in a rate they are different so they don't cancel out and so you have to show them?

81. ## chemistry

How would your calculated %P2O5 value be affected if you had not used this blank solution

82. ## physics

Alice has a mass of 70.0 kg and her car has a mass of 1000.0 kg. Alice is sitting in parked car on the side of the road. The magnitude of the normal force exerted by the road on her car is? (use g = 9.81 m/s2)

83. ## need help with thsi equation

ZnSO4.xH2O(s) ---> ZnSO4(s)+xH2O(g)

84. ## need to balance equation

ZnSO4.xH2O(s) ---> ZnSO4(s)+xH2O(g)

85. ## chemistry

a 2.00g sample of zinc metal is added to a calorimeter containing 150g of nitric acid solution initially at 20.0 degrees celsius . The temperature of the solution increased to 28.0 degrees celsius . Calculate the delta H of the reaction assuming that the

86. ## Math

I really need help on this PLEASE a 5 man baseball team how would I find average? Would it be total hits divided by at bats or add up the 5 averages and divide by 5? Thank You - Please help me!

87. ## Math

For a 5 man baseball team how would I find the average? Would it be total hits divided by total at bats or add up 5 averages and divide by 5?

88. ## math

samantha has 28 and she gets 28 more how many would she have in all.

89. ## physics

A staging that weighs W staging supports a painter weighing 770 N. The reading on the left scale is 660 N and the reading on the right scale is 410 N. What is the weight of the staging? Answer in units of N

90. ## physics

An arrow is shot from a bow at 20.0 m/s at an angle of 65 degrees above the horizontal. The arrow leaves the bow at a height of 1.80 m. At what height will it strike a wall that is 10.0 m away? (Remember to connect the two motions of the arrow using time.)

91. ## Physics

Calculate the distance (in ) that Larry runs if he maintains an average speed of 8.9 for 1 hour.

92. ## Physics

Two small pith balls, each of mass m = 16.6 g, are suspended from the ceiling of the physics lab by 1.8 m long fine strings and are not moving. If the angle which each string makes with the vertical is è = 19°, and the charges on the two balls are equal,

93. ## Intergration: Measurement (Math)

I don't get it. I need to find out these conversions. 15,000 g= ____ kg 5,000 mL= ____ L 75 mL= ____ L 390 mL= ____ L 0.03 m= ____ mm 6 m= _____ mm 2.48 L= ______ mL 43.2 L= ______ mL 807 mL= _____ L 3,751 m= _____ km

94. ## PHYSICS ARGENT!!!

Determine the scalar product of A= 3.0i + 1.0j - 2.0k and B= 3.0i - 2.0j - 3.0k

95. ## math

how many feet in a dozen

96. ## Physics

The membrane that surrounds a certain type of living cell has a surface area of 2.13 x 10-9 m2 and a thickness of 1.94 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 6.4. (a) If the potential on

97. ## math

find equivalent fractions with a common denominator and order from least to greatest 3/7 ,1/9 ,2/3

98. ## physics

The temperature of 2.7 moles of an ideal gas is 471 K. How much work does the gas do in expanding isothermally to 3.7 times its initial volume?

99. ## Physics

When you take a bath, how many kilograms of hot water (50°C) must you mix with cold water (13°C) so that the temperature of the bath is 36°C? The total mass of water (hot plus cold) is 215kg. Ignore any heat flow between the water and its external