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leva [86]
2 years ago
9

2x3 + 3x + 4 I’m so lost rn.. somebody please help me

Mathematics
1 answer:
VikaD [51]2 years ago
6 0

Answer: My answer was wrong sorry

Step-by-step explanation:

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Andreas93 [3]

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option 2
3 0
3 years ago
100 points!! Brainliest if correct!!
Elena-2011 [213]

surface area (S) of a right rectangular solid is:

S = 2*L*W + 2*L*H + 2*W*H (equation 1)

where:

L = length

W = width

H = height

-----

you have:

L = 7

W = a

H = 4

-----

formula becomes:

S = 2*7*a + 2*7*4 + 2*a*4

simplify:

S = 14*a + 56 + 8*a

combine like terms:

S = 22*a + 56

-----

answer is:

S = 22*a + 56 (equation 2)

-----

to prove, substitute any value for a in equation 2:

let a = 15

S = 22*a + 56 (equation 2)

S = 22*15 + 56

S = 330 + 56

S = 386

-----

since a = 15, then W = 15 because W = a

go back to equation 1 and substitute 15 for W:

S = 2*L*W + 2*L*H + 2*W*H (equation 1)

where:

L = length

W = width

H = height

-----

you have:

L = 7

W = 15

H = 4

-----

equation 1 becomes:

S = 2*7*15 + 2*7*4 + 2*15*4

perform indicated operations:

S = 210 + 56 + 120

S = 386

-----

surface area is the same using both equations so:

equations are good.

formula for surface area of right rectangle in terms of a is:

S = 22*a + 56

-----

8 0
3 years ago
Read 2 more answers
Explain these questions, please
harina [27]
How I was taught: Make sure both numbers are a fraction. If not put "1" as the denominator. Multiply straight across. Simplify if you can.
3 0
3 years ago
the seller is selling a baseball for 0.25 bitcoin. If 1 bitcoin is equal to $6,800, how much does the baseball cost in U.S dolla
Mice21 [21]

Answer:

i think its 1,700

Step-by-step explanation:

because 0.25 is 1 fourth of a bitcoin so i divided 4 from 6,800 and got 1700

3 0
3 years ago
A rectangular prism has a length of
laiz [17]

Answer:

Its volume is 2 times the original volume.

Step-by-step explanation:

It cant be the first 2 because you are making it bigger, not smaller. and it cant be the last one because you are only doubling one of the parts.

7 0
3 years ago
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