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2 years ago

8TH GRADE MATH HELP PLEASE

Mathematics

2 answers:

s2008m [1.1K]2 years ago

6 0

Answer:

55 is the answer hope it helps...

tekilochka [14]2 years ago

5 0

Hey there! The answer is 55!
To get this answer, you just need to subtract 125 from 180, which would look like 180-125, which would get you an answer of 55.

Hope this helped! Have a great day! :)

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The cylinder’s diameter and height are both 39.2 millimeters. What is the surface area of this cylinder?

Dominik [7]

Answer:

A = 7,241.2454026112 square mm.

or exact : A = 2,304.96‬*π sq mm

Step-by-step explanation:

Cylinder formula: A = π* r^2 + 2 *π * r* h + π*r^2

is the surface area.

d = 2r = 39.2 mm

h = 39.2 mm

r = 19.6 mm

A = π* r^2 + 2 *π * r* h + π*r^2

A = 2* π* (19.6)^2 + 2π (19.6)*(39.2)

A = 2,413.748467537 + 4,827.496935

A = 7,241.2454026112 square mm.

A = 2*pi* (768.32‬ + 384.16)

A = 2*1,152.48‬* pi

A = 2,304.96‬*π sq mm

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3 years ago

How can you use a table of data to write and graph a linear relationship?

nikklg [1K]

Answer:

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Step-by-step explanation:

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2 years ago

Can someone help me figure out what is 5/12 of 1 ⅓ =

lorasvet [3.4K]

Answer:

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Step-by-step explanation:

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2 years ago

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Given the function h(x)=-x^2-5x+14 determine the average rate of change of the function over the interval -9

Juli2301 [7.4K]

Answer:

The average rate of change of the function over the interval is of 6.

Step-by-step explanation:

Average rate of change:

The average rate of change of a function h(x) over an interval [a,b] is given by:

$A = \frac{h(b)-h(a)}{b-a}$

In this question:

Over the interval [-9,-2], so $a = -9, b = -2, b - a = -2 -(-9) = 7$

The function is:

$h(x) = -x^2 - 5x + 14$

$h(-9) = -9^2 -5(-9) + 14 = -81 + 45 + 14 = -22$

$h(-2) = -2^2 -5(-2) + 14 = -4 + 10 + 14 = 20$

Then

$A = \frac{h(-2)-h(-9)}{7} = \frac{20-(-22)}{7} = \frac{42}{7} = 6$

The average rate of change of the function over the interval is of 6.

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3 years ago

The bar diagram represents 24 hours in one day and shows a mark at 30%. If you sleep 30% of the day, how many hours do you sleep

yan [13]

Answer:

24 hr × 30% = 24 hr × 0.30 = 7.2 hr (or 7 hr 12 min)

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3 years ago

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