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Ahat [919]
3 years ago
12

The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function?

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0
The function is a parabola which opens downwards.
-x^2 - 2x + 15
-(x^2 + 2x) + 15
= -[(x + 1)^2 - 1 ]+ 15
= -(x + 1)^2 + 16

The domain is all real numbers and the range is {y|y <= 16}
Its the second choice.


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Write a question to finish the word problem then solve the problem. The art teacher has 9 boxes of crayons there are 8 crayons i
ikadub [295]
How many crayons are there in total? The answer is 9 boxes multiplied by 8 crayons which equals 72 total crayons.
7 0
3 years ago
The radius of a circle is 2 centimeters. What is the circles circumference?
Salsk061 [2.6K]

Answer: 4π cm or 12.56 cm

Step-by-step explanation: To find the circumference of this circle, start with the formula for the circumference of a circle which is C = 2πr.

Since the radius is 2 centimeters, we can

plug in 2 centimeters for <em>r</em> in the formula.

So we have (2)(π)(2 cm) which is equal to 4π cm.

So the circumference of this circle is 4π cm.

Remember that π is approximately equal to 22/7 or 3.14 so we can estimate the value of the circumference by plugging in 3.14 for π.

So we have (4)(3.14) which is equal to 12.56.

So the circumference of the circle is

approximately equal to 12.56 cm.

5 0
2 years ago
Craig Browning bakes cookies for the elementary school cookie sale. His chocolate chip cookies sell for $1.00 a dozen, and his o
Volgvan

Answer and Step-by-step explanation:

Let

Number of chocolate chip cookies = x

Number of oatmeal brownie cookies = y

Bake chocolate chip cookies up to 20 dozen = x≤ 20

Bake oatmeal brownies up to 40 dozen= y≤40

Total cookies = x + y ≤ 50

Number of oatmeal brownie will be no more than three times the number of chocolate chip= y≤3x

From the inequality:

                        X + y=50                          

                         y = 3x

By putting the value of y, we get

    x + 3x = 50

     4x = 50

    X = 12.5

By putting the value of x=12.5 in equation y = 3x, we get

Y = 3(12.5)

    = 37.5

Craig should make 12.5 dozen chocolate chip and 37.5 dozen oatmeal brownies in order to make more money.

8 0
3 years ago
Any number with the power of zero is always going to equal:<br> A. 1<br> B. 0<br> C. The number
makkiz [27]
Surprise! It turns out that the answer is 1.

Why?!!??!

Notice this pattern when working with powers of 2:
2^0  2^1  2^2  2^3  2^4
 ?      2      4      8     16

Every time we increase the power we multiply by 2. Or reading the pattern backwards, every time we decrease the power we divide by 2. What is 2 divided by 2? It is 1! So 2^0 = 1 to finish the pattern:
2^0  2^1  2^2  2^3  2^4
 1      2      4      8     16

Try it with 3 or with 5 or with any number! You'll see that the pattern holds!
5 0
3 years ago
Read 2 more answers
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101.25+81.25=182.5 is the answer of how much the cost.
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