MATHEMATICS MIDDLE SCHOOL

Which answer shows this equation in standard form?8 - 4(x + y) = -6x + 6

A. -10x + 4y = -2

B. 2x + 4y = -2

C. 2x + 4y = 2

D. 2x - 4y = -2

Answers

Answer 1
Answer: The Standard Form equation of a line has the following formula: 
ax+by=c ; a≠0 ; b≠0 ;

Then, 8 - 4x - 4y = -6x + 6 ;
-4x + 6x - 4y = 6 - 8 ;
2x - 4y = - 2 ;
The answer is D. !

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Which pair of fractions is equivalent to this pair: 3/5 and 2/7 ?A.21/35 and 10/35B.10/35 and 7/35C.7/35 and 5/35D.24/35 and 12/35

Joshua breeds mice and notices that he can model their population growth with the equation m = 2(3) d/14. He plans to breed them for 100 days. What parameter does the denominator 14 represent in this experiment?

Answers

A. The population at the start of the experiment
B. The growth factor of the population every two weeks
C. The population after one hundred days
D. How many days it takes for the population to triple

If these were the choices of the above question, the answer would be B.) The growth factor of the population every two weeks.

14 days represents 2 weeks.

John will be x in 7 years. How old was he last year? A: x + 7
B: 1 - x - 7
C: x + 8
D: x - 8

Answers

Right now, he is 7 less than he will be in 7 years, and 1 more than he was last year.

'x' is 7 more than he is right now, and 8 more than he was last year.

If 'x' is 8 more than he was last year, then he was  (x - 8) last year.

That's Choice-'D'.
D is the answer, because seven minus X is his age this year and a year before that is last year. So the answer is X-8

Macy has some ropes each 2 feet long. Nellie has some ropes each 3 feet long. Oscar has some ropes each 5 feet long. What is the length of each line of ropes when they are of the same length?

Answers

I think
2 feet+3 feet+5 feet= 10 feet

Simplify. –12.8 – (–7.4) + 16.7







A.
11.3





B.
–3.5





C.
36.9





D.
–22.1

Answers

-12.8 - (-7.4) + 16.7    Expand out the brackets
-12.8 + 7.4 + 16.7       Simply add all
= 11.3
A
–12.8 – (–7.4) + 16.7.         

-12.8 + 7.4 + 16.7              Minus Minus is Plus.

16.7 + 7.4 - 12.8

24.1 - 12.8

11.3

Option A.

I'LL GIVE BRAINLIEST! TO FIRST ONEi think its 1/12-3/1 but i think my answer is wrong, please dont answer if you're not sure

Answers

Answer:

Step-by-step explanation:

-19/12r-3

Answer: Guess

explanation: Guessing is the most important word/thing to solve an answer

A x b = 15b x c = 30
c x a = 18
what does a, b and c equal?
provide working for answers/explain your answer briefly

Answers

Answer:

a=3

b=5

c=6

Step-by-step explanation:

Well,~you~see~it's~all~in~the~mental~workings~and~also~if~you~know~your~\nmultiplication~tables!

→ we~have:

a* b =15~

Now,~where~does~15~fall~in~our~multiplication~table?~5~and~3!~so~that~\nmeans,~a~is~3~and~b~is~5.

→ Now,~we~have:

b* c=30

We~already~know~what~the~value~of~b~is~so~in~the~5's~table,~what~number~gives~us\n~30?~6!~so,~we~know~that~c~is~6.

→ We~also~have:

c* a =18

We~already~know~what~c's~value~and~a's~value~is.~c~is~6~and~a~is~3~so~\nif~we~multiply~them~we~get,~18!

Hope~my~answer~helps!~Have~an~amazing~day~ahead!

-Isabelle~Williams
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