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pychu [463]
2 years ago
8

Using F(x) = 5x^2- 3, what is f(-3)? A. 42 B. -3 C.-48 D. -42

Mathematics
1 answer:
Gnom [1K]2 years ago
8 0

Answer: 42

Step-by-step explanation

Switch x out with 3

using Pemdas do the exponent first

3^2 is 9

then multiply

5*9= 45

then subtract

45-3=42

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Is y = -0.375x + 16.625 a linear equation?​
Ulleksa [173]

Answer:

Step-by-step explanation:

Yes as the x term is to the first power and is not raised to a larger exponent.

7 0
2 years ago
An individual head of a sprinkler system covers a circular area of grass with a radius of 25 feet. the yard has 3 sprinkler head
frutty [35]

Answer:

Option D. 5890.5 feet²

Step-by-step explanation:

An individual head of a sprinkler system covers a circular are of grass with a radius of 25 feet.

Yard has three sprinkler heads that each cover circular area with no overlap.

We have to calculate the approximate area watered by these 3 sprinkler heads.

Area covered by one sprinkler = π×r² = π×(25)² = 625π feet²

Therefore area covered by three sprinkler heads = 3 × 625π = 5892.85 feet²

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3 0
3 years ago
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What is the nearest integer to90
malfutka [58]

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

➷ 90 is an integer, and the closest others are 89 and 91

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

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4 0
3 years ago
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Hello, i need help with this question please!<br><br> solve x/2 +3 &gt; 4
jeka57 [31]

Answer:

x >2

Step-by-step explanation:

x/2 +3 > 4

Subtract 3 from each side

x/2 +3-3 > 4-3

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Multiply each side by 2

x/2*2 >1*2

x >2

3 0
2 years ago
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(Please someone help)
8_murik_8 [283]

Answer:

A. 42 peaches and 56 strawberries

Step-by-step explanation:

3 · 14 = 42

4 · 14 = 56

6 0
3 years ago
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