(2+6)/2 is 4 so the x is 4. C
Answer:
Add to eliminate y
Step-by-step explanation:
Add to eliminate y
Using proportions, it is found that the total amount of cement, sand, and gavel required is of 55.2 cubic yards.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.
The decimal equivalent to the mixed number 1 1/2 is given by:
1 + 1/2 = 1 + 0.5 = 1.5.
1.5 times 36.8 cubic yards is:
1.5 x 36.8 = 55.2.
The total amount of cement, sand, and gavel required is of 55.2 cubic yards.
More can be learned about proportions at brainly.com/question/24372153
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C I petty sure the answer is c
The justification for whether Skyler, Robert, or Kaitlyn was right or wrong stems from how they went about their processes:
- Skyler erred by failing to equalize the bases of both sides before equating the exponents.
- Robert is right since he equalized the exponents before comparing the bases of the two sides.
- Since Kaitlyn made the bases of both sides equal before equating the exponents, she is accurate.
1) SKYLER'S PROCESS:
Skyler wants to resolve the following issue;
Reduce 729 to the lowest base possible as a first step; [3^(6)]^x = 9
729^(x) = 9
The next thing she did was convert 6x to 9.
Since both sides must have the same base when dealing with exponent equality, she may have transformed 9 to have the same base of 3 as the left hand side before equating the exponents.
So Skyler is wrong.
2) ROBERT'S PROCESS:
Skyler failed to capture both bases equally, as we witnessed, but Robert has now made the right decision by;
9^(3x) = 9¹
After which he equated the exponents to get;
3x = 1
x = 1/3
Thus; Robert is correct
3) KAITLYN'S PROCESS:
Kaitlyn is also accurate since she adhered to the same method, which calls for comparing bases before comparing exponents.
Learn more about laws of exponents here:
brainly.com/question/11761858
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