Answer:
c. hope helpful answer to your question
Answer:

Step-by-step explanation:
step 1
Find the lateral surface of the cylinder (hot water tank)
The lateral area is given by the formula

we have

substitute


step 2
Find the volume of fiberglass composite needed
Multiply the lateral area by the thick

-----> exact value
assume


Answer: x > 74
<u>Step-by-step explanation:</u>
An obtuse angle is greater than 180°. So, 3x - 42 must be greater than 180.
- 3x - 42 > 180
- <u> +42 +42</u>
- 3x > 222
- <u>÷3 ÷3</u>
- x > 74
The number of miles covered every evening obtujwd using a <em>system of equation</em> is 15 miles.
<u>Let the number of miles per evening</u> = m
- Number of miles per morning = 8 miles
- Total miles covered = 115 miles
<u>Using the expression below :</u>
<em>Number of days(miles per morning + miles per evening) = 115 miles </em>
5(8 + m) = 115
40 + 5m = 115
5m = 115 - 40
5m = 75
m = 75 / 5
m = 15 miles
Therefore, the Number of miles covered per evening is 15 miles.
Learn more : brainly.com/question/18796573