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blagie [28]
2 years ago
13

F(x) = -8 (5-x), what is the value of f(-4)?

Mathematics
1 answer:
Morgarella [4.7K]2 years ago
4 0

Answer:

f(-4) is basically just saying that you need to use the function given while x = -4.

The function given:

f(x) = -8(5-x)

We see that f(-4) means that x has to be -4, so we can substitute it in:

f(-4) = -8(5-(-4))

f(-4) = -8(9)

f(-4) = -72

Therefore, f(-4) is -72.

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Romashka [77]

9.42 Units

Step-by-step explanation:

Since the angle shown is 90 degrees we can deduce that the rest of the arc is 270 degrees therefore we can make the fraction:

270/360; 360 being the total angle measurement of a circle

270/360 simplifies to 3/4

The fraction represents how much of the circle that arc covers

Now we have to find the circumference which would be

2(3.14)r

r = 2 therefore: 2(3.14)2 = 12.56

Now that we have the circumference of the WHOLE circle we multiply it by 3/4 to find out the arc length

Which gives us  9.42

8 0
3 years ago
Please help!!!!!!
12345 [234]
The area of a circle is:

A=pr^2

You are told r=32 so

A=p32^2

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8 0
3 years ago
Read 2 more answers
What is the place value of the 4 in 4.09?
MaRussiya [10]

Answer:

B: Ones.

Step-by-step explanation:

Because this number is 4.09, and the decimal is right next to the 4, that means that it is in the ones place. Decimals are always adjacent on the right to the ones place.

5 0
2 years ago
Her exercise today, Amanda plans to both run and swim. Let
vlabodo [156]
R = laps she runs
s = laps she swims
each r (laps she runs) takes 5 min. 
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So your inequality should = 30 


5 0
3 years ago
Simplify each expression involving signed numbers.
7nadin3 [17]

Answer:

-7 - 2 = -9 (combine the numbers,simplify)

12 + (-4) = 8 (Simplify the Expression)

-8(-6) = 48 (Simplify the Expression)

18/-3 = -6 ( Simplify the Expression)

Hope this helps :)

3 0
2 years ago
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