The product of a number and -7 amounts to seven times the sum of that number and 20. Find the number.

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

8 0

Answer: -10

Step-by-step explanation:

If you put it in an equation it would be -7x=7(x+20). You would then -7x to both sides to get -14x=140. Just divide -14 on both sides to isolate x. This equates to -10. If you put -10 back into the equation then it says that 70 is 7 times larger than 10. Which it is.

You might be interested in

Which of the following can be probality of an event. 0.4, 1.3, 0.8 ,0?<br>

kondaur [170]

I would thinks it’s 1.7

7 0

3 years ago

Find the common difference of the arithmetic sequence –8, -2, 4, ...

ELEN [110]

Answer:

Step-by-step explanation:

$a_1=-8\\a_2=-2\\a_3=4\\\\d=a_2-a_1=a_3-a_2=...=a_n-a_{n-1}\qquad\qquad \{n\ge2\}\\\\\left{\big{a_2-a_1=-2-(-8)=-2+8=6}\atop\big{a_3-a_2=4-(-2)=4+2=6\quad\ \,}\right\}\implies\ \ d=6$

8 0

3 years ago

How is the definition of property similar in science and math

sdas [7]

Answer:

Properties in math are used as general rules to solve problems.

I hope this helped!

Step-by-step explanation:

6 0

3 years ago

What are 3 consecutive integers that have a sum of 234

Colt1911 [192]

$n+n+1+n+2=234\\
3n+3=234\\
3n=231\\
n=77\\
n+1=78\\
n+2=79$

77,78,79

3 0

3 years ago

Which method used to calculate finance charges is most favorable to the card issuer?

Ivenika [448]

Answer: c. previous balance method

The method used by credit card companies to calculate finance charges in which it is most favorable to the card issuer is the previous balance method. This is computed by charging the interest into the new billing period. This is least favorable to cardholder thus, most favorable to card issuer.

4 0

3 years ago

Read 2 more answers