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olga2289 [7]
2 years ago
6

Factor completely 9r^3-72r^2

Mathematics
1 answer:
PtichkaEL [24]2 years ago
6 0

Answer:

9r²(r - 8)

Step-by-step explanation:

Step 1: Write expression

9r³ - 72r²

Step 2: Factor out 9

9(r³ - 8r²)

Step 3: Factor out r²

9r²(r - 8)

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Find the area of the shaded region
nexus9112 [7]

Answer:

40

Step-by-step explanation:

area of shaded region = area of whole figure - area of non shaded region

area of whole figure: The whole figure is a rectangle

The area of a rectangle can simply be calculated by multiplying the width by the length

The given width is 10ft and the given length is 8ft

Hence area of whole figure = 10 * 8 = 80ft²

Area of non shaded region: the non shaded region also creates a rectangle

Like stated previously the area of a rectangle can simply be calculated by multiplying the width by the length

The given width is 5ft and the given length is 8ft

Hence, area of non shaded region = 5 * 8 = 40ft²

Finally we can find the area of the shaded region.

We can easily do this my subtracting the area of the nonshaded region from the area of the whole figure

If we have identified that the area of the whole figure is 80 and the area of the non shaded region is 40

Then, area of shaded region = 80 - 40 = 40ft²

6 0
2 years ago
A number has many factors including 3 and . What other number must also be a factor of the Same number?
Bas_tet [7]

3 and what?

if it is 3 and 5 than the answer would be 15

5 0
2 years ago
a railroad track rises 30feet for every 400 feet of track. what is the measure of the angle of elevation of the track?
tensa zangetsu [6.8K]
It will be 0.075 the tracks
4 0
3 years ago
Read 2 more answers
*place holder since picture has the work*
ira [324]

Answer:

A square.

Step-by-step explanation:

I plotted the points on Desmos and then connected them.

When connected, the lines form a square.

[Picture Below]

3 0
3 years ago
Leona answered all the questions on a test. She had 90% of them correct. There were 40 questions in all. How many did she have c
KengaRu [80]

Answer:

The answer is 36

Step-by-step explanation:

Let the number be <em>x</em>

x/40 is her mark

she got 90% mark correct

x/40 x 100 = 90

by cancellation we get 9 x 4 = 36

HOPE THIS HELPS

6 0
3 years ago
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