A, B and C but I’m contemplating D too but it’s def not E or F
Answer:
Procedure in option C only works.
Step-by-step explanation:
We have to select the process in which Mrs. Smith can help her to work 30 divided by 3.
(A) (27 divided by 9) + (9 divided by 3) = 3 + 3 = 6
But (30 ÷ 3) = 10 ≠ 6
(B) (24 divided by 4) + (4 divided by 4) = 6 + 1 = 7 ≠ 10
(C) (21 divided by 3) + (9 divided by 3) = 7 + 3 = 10
(D) (20 divided by 4) + (10 divided by 4) = 5 + 2.5 = 7.5 ≠ 10
So, procedure in option C only works. (Answer)
Again, we can prove the procedure in the following way:
{Which is the distributive property of division}
<u><em>Answer:</em></u>
Dory biked 143 miles last month
<u><em>Explanation:</em></u>
Assume that Karly biked x miles last month
We are given that Dory biked 11 times as many miles as Karly did
<u>This means that:</u>
Dory biked 11x miles last month
<u>Now, we are given that:</u>
Together they biked a total of 156 miles
<u>Therefore:</u>
156 = x + 11x
156 = 12x
x = 13
<u>Based on the above:</u>
Karly biked x miles = 13 miles
Dory biked 11x miles = 11*13 = 143 miles
Hope this helps :)
Answer:
x = -7/2 multiplicity 2.
Step-by-step explanation:
4x^2 + 28x + 49 = 0
(2x + 7)(2x + 7) = 0
This is a perfect square.
2x + 7 = 0, so:
x = -7/2 multiplicity 2.
C. 2x+2
Sorry, read the question wrong!