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2 years ago

(0,-4),(1,0),(2,2) find a quadratic function in standard form for each set of points.

1 answer:

4 0

We are given the points
<span>(0,-4),(1,0),(2,2)
The standard form a quadratic function (in terms of x) is
y = Ax2 + Bx + C
Subsitute the points
-4 = 0 + 0 + C
C = -4

0 = A + B - 4

2 = 4A + 2B - 4

Solve for A and B
A = -1
B = 5

The function is
y = -x2 + 5x - 4</span>

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James notes the angle of elevation of the top of tower to be 30 degree if James is 100meter away horizontally from the base of t

noname [10]

Answer:

h = 57.73 m

Step-by-step explanation:

We have,

The angle of elevation of the top of tower to be 30 degree

James is 100 m away horizontally from the base of the tower.

It is required to find the height of the tower.

Here, angle is 30 degree

Base, b = 100 m

Let h is the height of the tower. The relation between base and height is given by :

$\tan\theta=\dfrac{h}{b}\\\\h=b\times \tan\theta\\\\h=100\times \tan(30)\\\\h=57.73\ m$

So, the height of the tower is 57.73 m.

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3 years ago

What is the mean of the high temperatures, in degrees Fahrenheit, for the week? Show your work.

DiKsa [7]

The mean is the average, so add all the numbers and divide by 7 (7 terms).

-14 is the sum, divided by 7 = -2

The mean is -2.

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3 years ago

A recipe requires 2\tfrac{3}{4}2 4 3 cups of milk for every \frac{1}{3} 3 1 of a cup of flour. What is the ratio of cups of

exis [7]

Answer:

28 tablespoons of sugar

6 tablespoons of cocoa powder

Step-by-step explanation:

Malik is using a cookbook to make a recipe, but he can not find his measuring cups! He has, however, found a tablespoon. Inside the back cover of the cookbook, it says that 1 cup = 16 tablespoons.

Explain how he could use the tablespoon to measure out the following ingredients:

2 cups of flour

½ cup sunflower seeds

1¼ cup of oatmeal

Malik also adds the following ingredients. How many cups of each did he add?

28 tablespoons of sugar

6 tablespoons of cocoa powder

Use of the following representations is optional:

Tablespoons 16

Cups 1

5 0

3 years ago

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HIGH POINT REWARD

Yuki888 [10]

Total number of seniors = 55 + 70 = 125
Number of seniors who plan to go to college = 55

Percentage of seniors who plan to go to college = 55/125 x 100 = 44%

Answer: 44%

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3 years ago

What is the slope of (3,9) and (5,7)

lesantik [10]

Answer:

Step-by-step explanation:

-2/2

5 0

2 years ago

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