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soldi70 [24.7K]
3 years ago
12

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

7 0
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

8 0
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

7 0
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
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