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Ray Of Light [21]
2 years ago
15

Evaluate the function. f(3) = -36 Find f(-2) Answer: 3 2​

Mathematics
1 answer:
k0ka [10]2 years ago
6 0

Answer:

-12

Step-by-step explanation:

f(x) = -3x^2

Let x = -2

f(-2) = -3( -2)^2

     = -3 ( 4)

     = -12

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State the slope and y-intercept for the graph of the equation y=-3x+5
Olin [163]

Answer:

slope: -3

y-intercept: 5

Step-by-step explanation:

y=mx+b, where m=slope and b=y-intercept

6 0
3 years ago
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Someone please help. Giving brainliest!!
padilas [110]

Answer:

A. None of these

Step-by-step explanation:

The largest perfect square under 100 would actually be 81 (9 x 9)

90 and 99 are not perfect squares and 64 is smaller than 81.

8 0
3 years ago
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Really need to know this for math!
Len [333]

Answer:

I had to look up the problem B4 because your image doesn't show the rest of the information

B4 = 12

B5 = 1,738

Step-by-step explanation:

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6 0
3 years ago
a tight roll of paper, as delivered to the printer, is 60cm in diameter, and the paper is wound on to a wooden cylinder 8cm in d
Alekssandra [29.7K]

The area of the paper is the amount of space it occupies.

The length of papers around the edge is 1607680 cm

The given parameters are:

\mathbf{d_1 = 60cm}

\mathbf{d_2 = 60cm + 8cm = 68cm}

The area of the circle head is:

\mathbf{Area = \pi \frac{d^2}{4}}

So, we have:

\mathbf{Area = \pi \frac{d_2^2 - d_1^2}{4}}

Substitute known values

\mathbf{Area = \pi \frac{68^2 - 60^2}{4}}

\mathbf{Area = \pi \frac{1024}{4}}

\mathbf{Area = 256\pi}

The length of the paper is then calculated as:

\mathbf{Length = \frac{Area}{0.0005}}

This gives

\mathbf{Length = \frac{256\pi}{0.0005}}

\mathbf{Length = \frac{256 \times 3.14}{0.0005}}

\mathbf{Length = 1607680}

Hence, the length of papers around the edge is 1607680 cm

Read more about areas at:

brainly.com/question/2264643

4 0
3 years ago
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Consider the equation: 12x=13-x^212x=13−x 2 12, x, equals, 13, minus, x, squared 1) Rewrite the equation by completing the squar
Flauer [41]

Answer:

(x + 6)^2 = 49

x = 1    or x = -13

Step-by-step explanation:

Given

12x = 13 - x^2

Using Completing the Square

12x = 13 - x^2 ---- Add x^2 to both sides

x^2 + 12x = 13 - x^2 + x^2

x^2 + 12x = 13

Divide the coefficient of x by 2; then add the square to both sides

x^2 + 12x + 6^2 = 13 + 6^2

x^2 + 12x + 36 = 13 + 36

x^2 + 12x + 36 = 49

Factorize

x^2 + 6x + 6x + 36 = 49

x(x + 6) + 6(x + 6) = 49

(x + 6)(x + 6) = 49

(x + 6)^2 = 49

Hence, the equation is (x + 6)^2 = 49

Solving further

Take square root of both sides

(x + 6) = \sqrt{49}

x + 6 = \±7

x  = \±7- 6

This implies that

x = 7 - 6     or x = -7 -6

x = 1    or x = -13

HEnce, the solutions are x = 1    or x = -13

6 0
3 years ago
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