The correct anwer is -21 and how i got that is by taking -7*300 to get -21 as my answer let me know if it helped any...
6) x= 2, angle = 90 degrees obviously
7) Im not sure on this one
8) x = 5
9) x = 1

<em><u>Solution:</u></em>
<em><u>Given expression is:</u></em>

We have to combine the like terms
From given expression,

By distributive property,
The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.
a(b + c) = ab + bc
Therefore,
Solve for brackets using distributive property

Add 1/7 and 6/7

Thus the equivalent expression is found
I think the answer is 4.5%
Answer: 41 plus 43 plus 45 plus 47.
Step-by-step explanation: n/a