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3 years ago

-b+7c b=2 c=-4 What’s the answer

Mathematics

2 answers:

Neko [114]3 years ago

8 0

Answer:

-30

Start with multiplication 7x(-4) will equal -28 then add that to the -2 and you will get -30

Nataly [62]3 years ago

6 0

Answer:

-4/7+b/7

Step-by-step explanation:

You might be interested in

Which polynomial expression represents a sum of cubes? (6 – s)(s2 + 6s + 36) (6 + s)(s2 – 6s – 36) (6 + s)(s2 – 6s + 36) (6 + s)

Nadusha1986 [10]

Answer:

Option 3 is correct that is $(6+s)(s^2-6s+36)$

Step-by-step explanation:

We have general formula for sum of cube which is

$a^3+b^3=(a+b)(a^2+b^2-ab)$

Here, we have a=s and b=6

on substituting the values in the formula we will get

$6^3+s^3=(6+s)(s^2+6^2-6s)$

After simplification we will get

$6^3+s^3=(6+s)(s^2+36-6s)$

After rearranging the terms we will get

$6^3+s^3=(6+s)(s^2-6s+36)$ which exactly matches option 3 in the given options.

Therefore, option 3 is correct that is $(6+s)(s^2-6s+36)$

4 0

4 years ago

Read 2 more answers

Tim answered all the questions on his math test but got 7 answers wrong. He received 3 points for every correct answer, and ther

Ket [755]

Answer:

35 questions

Step-by-step explanation:

First find out how many questions he got right setting up an equation.

1)3x=84.

The variable 'x' is the answers he got correct. The next step would be to divide by 3 to get the x alone. Remember, whatever you do to one side is done to the other so divide 84 by three as well

2) 3x÷3 = x.

84÷3=28.

which leads you to x=28.

Then, since he got 7 wrong, you would add the 7 to the 28 he got correct to get the final answer.

3) 28+7=35

another way you can do this is multiply numbers by three until you get to 84. The number you multiplied by is the amount he got correct, then add the correct and wrong ones together to get 35

7 0

3 years ago

When 40% of a number is added to the number, the result is 504. Find the number

mestny [16]

Answer:

302.4

Step-by-step explanation:

40% of 504 =201.6

504-201.6=302.4

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4 years ago

What are the solution points for the system graph?

kykrilka [37]

Answer:

if i right it (0,2)

Step-by-step explanation:

i hope u get it right

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3 years ago

Find the area of the kite.

natka813 [3]

Answer:

L times height equals area. So it's (8+8)×(8+2)=160 square inches

Step-by-step explanation:

6 0

3 years ago