3 years ago

E. 10.x-3(x+1)=5x+11

Mathematics

1 answer:

Brrunno [24]3 years ago

4 0

Answer:

x=7

Step-by-step explanation:

i didnt multiply E so im not to sure.

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2 years ago

A number is decreased by 40% to 525. what is the original amount?

zhenek [66]

Answer:

875

Step-by-step explanation:

lets assume the original amount X

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3 years ago

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Let F be the function given by f(x)= 2xe^x. Determine the interval(s) on which the graph is concave down.

Vika [28.1K]

Hello,

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x |-infinite -2 0 +infinite
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3 years ago

Brainlyst for the best answer thank you!

densk [106]

Answer: B

We all know that area= LxW
The width that is being shown is 8ft. The length is 20ft. Therefore, you multiply 8 x 20 which gives you 160ft squared. Hope this this helps :)

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3 years ago

If three times a number minus 2 equals 13, what is the number?

Nana76 [90]

Change the messy words into numerals
3 times a number minus 2    equals    13
3 × n - 2 = 13

3n - 2 = 13
take 2 to the other side
3n - 2 + (2) = 13 + (2)
3n = 15

Divide by 3 on either sides to isolate n
$\frac{3n}{3}$ = $\frac{15}{3}$
3 and 3 cancels out

n = 5

check:
3 times 5 minus 2 equals 13
3   × 5 - 2 = 13
15 - 2 = 13
13 =    13

The number is 5

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3 years ago