Answer:
81
Step-by-step explanation:
Let's do this systematically:
Four numbers: a, b, c, d
Whose mean is 85:
Whose largest number is 97:
Lets solve for the other numbers:
a+b+c+97 = 85*4 = 340
340 - 97 = 243
a+b+c = 243
at this point it doesn't matter what the numbers are, they just need to add up to 243.
We can do 243÷3=81, which is our answer
Answer:
19 ft³
Step-by-step explanation:
Volume of the pyramid:
V = 1/3 · B · h
B = 8 ft²
tan 30° = height / 7√3
1/√3 = height / 7√3
height = 7 ft
V = 1/3 · 8 · 7 = 18.67 ft³ ≈ 19 ft³
Answer ) 19 ft³
Height of the rock wall is 52.2 ft.
<u>Step-by-step explanation:</u>
These two triangles are similar, so using the similarity ratio, we can write as,
Δ HTV ~ Δ JSV
Now we can write the ratio as,
HT/TV = JS/SV
5.8/4 = x/36
Rearranging the equation to get x as,
x = 36 × 5.8 /4
= 52.2 ft
Answer:
3rd one
Step-by-step explanation:
2l + 2w = P
2w = P - 2l
w = P - 2l / 2