# ana

Given the formula: f(x)=x^2+ax+b and the vertex point (3,9) prove that this is the vertex of a minimum parabola using instantaneous rate of change.
2. ## Law

The uniform commercial code applies to contact issues related to Is it the sales of goods?
3. ## Biology

What four substances are recycled during photosynthesis and respiration? I’d come up with an answer but I’m confused... Part b: What is one component in photosynthesis that is not recycled and must be constantly available? Thank you.
4. ## History

Read the Summary The French Revolution was in actuality two revolutions (1). The first overthrew the stronghold of the Roman Empire as absolute rulers of the nation (2). The years in between the two revolutions were marked by fighting between Catholics and
5. ## Math

Anton is four years older than Liza. The product of his age three years from now and Liza's age two years ago is 90 years.Find their present ages
6. ## Chemistry

In 88S38 element, calculate the number of protons and number of nuetrons?
7. ## math

A rocket is shot into the air and follows a parabolic path given by h = -4.9t^2 + 58.8t + 8.6 where h is the height of the rocket above the ground in meters and t is the elapsed time in seconds. Determine how long the rocket will be above 150 m.
8. ## Math

A netball team scored 60 42 48 and 46 goals in their first four matches.What is the mean number of goals for the first for matches?What score will the team need to shoot in the next match so that they maintain the same mean score. the team shoots only 39
9. ## Math

which one of the following gives the distance between the numbers 11 and -8? -19, -3, 19, 3 How do you figure out these problems??
10. ## math

23 of all your books are fiction. 16 of those are historical fiction. What fraction of all your books are historical fiction? Options: 1/9, 1/18, 1/3, 1/2
11. ## math

The marker costs 13 as much as the pen. The pen costs 13 as much as the book. The book costs 13 as much as the game. The price of the marker is what fraction of the price of the game?
12. ## math

One day at 2:00 AM, the temperature was -9 F in Nome, Alaska. At 9:00 AM the temperature was 26 F. What was the average change in temperature in hours? Need help

51. ## Science

Do light and sound travel at the same speed through solids, liquids, and gasses? What are the effects of light and sound traveling through different objects?
52. ## physics

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 17 m/s at an angle of 39 ∘ above the horizontal. How long does it take for the ball to reach the wall if it is 3.8 m away? How high
53. ## physics

A soccer ball is kicked with a speed of 16.7 m/s at an angle of 45.0 ∘ above the horizontal.If the ball lands at the same level from which it was kicked, for what amount of time was it in the air?

7. Which of the following six organizing principles are evident in Articles I – III of the U.S. Constitution? Select all that apply. A. Limited government.*** B. Separation of powers. C. Judicial review.*** D. Checks and balances. 8. Which of the

6. The constitutional prohibition against laws respecting an establishment of religion must at least mean that, in this country, it is no part of the business of government to compose official prayers for any group of the American people to recite as part
56. ## Math

Four members of the Kaplan family will take a river trip down the Colorado River in Colorado State Park. The rafting company charges $10 per person for a half-day river trip, or$100 flat rate for a half-day river trip. The raft can hold up to 10 people.
57. ## Physics

The initial velocity, the final velocity, and the time are given. Using one of the equations of kinematics, you can calculate the displacement directly. An airplane starts from rest and reaches a takeoff velocity of 60.0 m/s due north in 4.0 s. How far has
58. ## Math

can you please help me work on this problem? I have a few and I want to know how to figure it out: The ratio of boys to girls in a class is 5 to 6. How many boys at in the class if there is a total of 121 students. I guessed 55 boys and 66 girls?
59. ## Math

Which of the following is NOT a correct ratio for 12 stars and 15 hearts? a. 12 to 15 b. 4:5 c. 12/15 d. 3 to five
60. ## Math

Benson is 2 years less than twice Jackson age and all together equal 19
61. ## Math

The salary of an employee in 1985 is $1200,in 1987 it will be$1350. Express salary as a linear function of time and estimate his salary in 1988.
62. ## Math

It is required to seat 5 men and 4 women in a row so that the women occupy the Even place. How many arrangements are possible?
63. ## Math

A family has 3 children. Their first child was a girl. What I'd the probability that the two children are of different gender?
64. ## MATH

the line 'l' has gradient 3 and cuts the x-axis at 4 then its equation?
65. ## Math

If the demand function of the monopolist is {p=200-0.5x} and its cost function is {C=100+5x+7x^2}. Value of 'x' , price and the amount of profit for which profit maximizes are:
66. ## Math

The probability that a person stopping at petrol pump will get his tyres checked is 0.12, the probability that he will get his oil checked is 0.29 and the probability that he will get both checked is 0.07. A) what is the probability that a person stopping
67. ## Physics

A child of mass 30 kg stands beside a circular platform of mass 95 kg and radius 2.4 m spinning at 2.3 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed? b) She then walks to the center and stay there. What
68. ## Physics

A circular disk of mass 0.4 kg and radius 36 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.4 a) Find the new angular velocity of the combination; b) The change in the
69. ## math

an arithmetic series is such that the ninth term is zero and the sum of first 25 terms is 50.the first term of the series?
70. ## math

the 54th term and 4th term of an A.P are -61 and 64 respectively.Find the common difference and 23rd tem
71. ## Physics

A block of mass 2.5 kg hangs vertically from a frictionless pulley of mass 6.5 kg and radius 16 cm. Treat the pulley as a disk. Find: a) the acceleration of the block b) the tension in the rope I don't even know where to begin,
72. ## Physics

A torque of 50 N*m acts on a wheel of moment of inertia 25 kg*m^2 for 4 s and then is removed. b)How many revolutions does it make in 15 s if it starts at rest? I found the angular acceleration, 2 rad/s^2, but I don't know how to find the amount of
73. ## Math

If thrice of "A's" age 6 years ago be subtracted from twice his present age the result would be equal to his present age. Find "A's" present age.
74. ## Math

Ten years ago the age of the father was four times of his son. Ten years hence the age of the father will be twice that of his son. The present ages of father & son are?
75. ## Math

A number is as much greater than 21 and is less than 71. The number is?
76. ## College Math

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, three green ones, four white ones, and three purple ones. She grabs seven of them. Find the probability of the following event, expressing it as a
77. ## Calculus

Let F(x)=f(x^4) and G(x)=(f(x))^4. You also know that a^3=15, f(a)=2, f′(a)=4, f′(a^4)=12. Find F′(a) and G′(a). I don't even know where to begin.
78. ## math

a company sells one of its product at Rs.12 per unit a year.its cost function is given by [c(x)=0.01x^2+8^x+7],where x represents the number of units.the number of units and the maximum profit for which profit function maximizes are:
79. ## math

A man travels 600km partly by train and partly by car.If he covers 120km by train and rest by car ; it takes him 8 hours.But if he travels 200km by train and and by car ; he takes 20 minutes longer.Find the speed of the train and that of the car.
80. ## math

2 men and 5 boys can do a piece of work in 4 days, while 4 men and 4 boys can do it in 3 days.How long it would take one man alone to do it and how many days ity would take one boy to do it alone?
81. ## math

if the length of a rectangle is one-third the perimeter of the rectangle,then the width of the rectangle is what fraction of the perimeter?
82. ## math

5 oranges when removed from a basket containing three more than seven times as many oranges,leave how many oranges in the basket?

91. ## Math

What is the expression of Aisha has four more than three times as many candies as rachell.
92. ## Health

An individuals self-esteem stays the same throughout their life: A - true B - false ** Self-actualization means that you focus on yourself all the time A - true B - false ** Which of the following is a skill you can practice to improve your self-esteem? A
93. ## Math

Henry is 3 times as old as Jake. Three years ago, he was 4 times as old as Jake. How old is each boy now?
94. ## English

I'm having trouble making out what this section means: "...and as soon as her daughter was in a condition, sent her to a monastery in France, the abbess of which had been her particular friend. And thus ended an intrigue which, considering the time it
95. ## English

Is this sentence grammatically correct? "Many times, women are blinded and silenced by fear, the fear of being different and thinking differently, especially in a culture that oppresses women."
96. ## stats

The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated. mean = 160 range = 60 mode = 165 variance = 324 median = 170 The coefficient of variation equals: a.0.1125% b.11.25% c.203.12% d.0.20312% Do I
97. ## stats

The mean of Exam 1 is 80%. The variance is 25. How many students of my IS310 class of 200 students have scores between 70% and 90%, assuming that the distribution is bell-shaped? a.180 b.185 c.190 d.195 I'm not sure how to set up this problem.
98. ## stats

Jason, a freshman at a local college, just completed 15 credit hours. His grade report is presented below. Course: Calculus, Biology, English, Music, P.E. Credit Hours 5, 4, 3, 2, 1 Grades C, A, D, B, A The local university uses a 4 point grading system,
99. ## Math

If a= -2, b= -5 and c= -6 than a - b + c = I don't know how to complete this problem?
100. ## earth and science

what continent lies between 20 and 60 degress north lattitude and between 160 and 50 degrees west longtitude