3 years ago

Please help ASAP!

Mathematics

1 answer:

harina [27]3 years ago

7 0

It’s b if not d if I’m wrong

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3х + 9y - 8x - 2y +7

Sonja [21]

Answer:

-5x+7y+7

Step-by-step explanation:

3х + 9y - 8x - 2y +7 can be written like the equation below to help solve it

3x-8x+9y-2y+7

=-5x+7y+7

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3 years ago

The pirouette dance team needs more than $300 to cover

noname [10]

Answer:

You need "more than" 300.

Step-by-step explanation:

i did the test

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2 years ago

A cylindrical rain barrel has a radius of 2 feet and holds a total of 30 cubic feet of water. How tall is the rain barrel? Use 3

enot [183]

Answer:

2.39 feet

Step-by-step explanation:

we know that

The volume of a cylinder is equal to

$V=\pi r^{2}h$

where

r is the radius of the base of the cylinder

h is the height of the cylinder

we have

$V=30\ ft^3$

$r=2\ ft$

$\pi =3.14$

substitute

$30=(3.14)(2^{2})h$

Solve for h

$30=(3.14)(4)h$

$h=30/12.56$

$h=2.39\ ft$

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3 years ago

Which statement is true about the difference 2 square root of 7 − square root of 28 ?

boyakko [2]

I'll go slow:

$2\sqrt 7 - \sqrt{28}$

$=2 \sqrt 7 - \sqrt{4 \cdot 7}$

$=2 \sqrt 7 - \sqrt{4} \cdot \sqrt{7}$

$=2 \sqrt7 - 2 \sqrt 7$

$=0$

Answer: B rational and equal to 0.

5 0

3 years ago

Help me please I don’t know what to do what’s the answer

shtirl [24]

YAY!!! ANOTHER PERSON FRON ED-GENUITY!!!
All of the letters are equal to 90 degrees so the answer would be C.
Hope I helped!

7 0

3 years ago