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2 years ago

F(t) = t^2 - 5t; Find f(-8)

Mathematics

2 answers:

yKpoI14uk [10]2 years ago

7 0

Answer:

f(-8) = 104

Step-by-step explanation:

f(t) = t^2 - 5t

Let t=-8

f(-8) = (-8)^2 -5(-8)

= 64 +40

= 104

gizmo_the_mogwai [7]2 years ago

4 0

Pls mark Brainliest.

Answer:

f(-8) = 104

Step-by-step explanation:

f(-8) = (-8)^2 - 5(-8)

f(-8) = 64 + 40

f(-8) = 104

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oee [108]

Answer:

q = 40

Step-by-step explanation:

$\frac{q}{5} = 8$

multiply 5 on boths sides:

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q = 40

to check:

$\frac{40}{5}$ = 8

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Carissa also has a sink that is shaped like a half sphere. The sink has a volume of 4000/ 3 * π in 3. One day, her sink clogged.

givi [52]

Answer:

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Part b) 30 cups

Step-by-step explanation:

Part a)

step 1

Find the volume of the conical cup with a diameter of 4 in. and a height of 8 in

The volume of the cone (cup) is equal to

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we have

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substitute

$V=\frac{1}{3}(3.14)(2^{2})8=33.49\ in^3$

step 2

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Divide the volume of the sink by the volume of the cup

$\frac{4,000}{33.49}= 119\ cups$

Part b)

step 1

Find the volume of the conical cup with a diameter of 8 in. and a height of 8 in

The volume of the cone (cup) is equal to

$V=\frac{1}{3}\pi r^{2}h$

we have

$r=8/2=4\ in$ ----> the radius is half the diameter

$h=8\ in$

assume

$\pi =3.14$

substitute

$V=\frac{1}{3}(3.14)(4^{2})8=133.97\ in^3$

step 2

Find out how many cups of water must Carissa scoop out of the sink

Divide the volume of the sink by the volume of the cup

$\frac{4,000}{133.97}= 30\ cups$

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