Answer: What is the question
Step-by-step explanation:
The formula of the area of the equilateral triangle:
The formula of the area of the rectangle:
The formula of the volume of the triangular prism:
Answer:B
Step-by-step explanation:
Answer:
Width= 30
Length= 62.5
Step-by-step explanation:
<u>First we simplify the length to width ratio </u>
25/12=
2 1/12 ratio of length to width
width=x
length=2 1/12x
<u>Make the equation for this ratio's perimeter being equal to 185</u>
2(2 1/12x) + 2(x)=185
<u>Solve for x</u>
4 1/6x +2x=185
6 1/6x=185
x=30
<u>Substitute the answer in for x to find the length and width</u>
Width= 30
Length= 2 1/12(30)
Length= 62.5
Sum = n/2[2a + (n - 1)d] where a = first term, n = number of terms and d = common difference
(a) 30/2(2 x 5 + (30 - 1) x d) = 1455
10 + 29d = 1455 / 15
29d = 97 - 10
d = 87 / 29 = 3
(b) 7/2(2 x 9 + (7 - 1)d) = 0
18 + 6d = 0
6d = -18
d = -3
