Answer:
A. m+7n+14
Step-by-step explanation:
Add parenthesis to help simplify.
(5m-4m)+(22-8)+7n
Simplify the expression.
m+7n+14
Answer:
joint variation means L (safe load) is directly proportional to both w and d2
inverse proportionality means L = k/l
So the equation is:
L = k(wd2/l)
You are given:
w = 6 in
d = 5 in
l = 12 ft
L = 7666 lbs
7666 = k(6*52/12)
Solve for the constant, k.
7666 = k (6*25/12)
7666 = k (150/12)
7666 = k (12.5)
613.28 lbs/(ft.in3) = k
Use this k-value to solve for L in the last part of the question.
What safe load, L would a beam 3 in. wide, 7 in. deep and 15 ft long of the same material support? (Round off your answer to the nearest pound.)
w = 3 in
d =7 in
l = 15 ft
k = 613.28 lbs/(ft.in3)
Final Safe load = 6010.144 lbs *** Edited for clarity and to fix a multiplication erro
Good morning,
Answer:
<h2>the number of true false questions : 6</h2><h2>the number of selected response : 4</h2>
Step-by-step explanation:
Let x represent the number of true false questions
and y represent the number of selected response
we have to solve this system to work out the number of each type of question
x+y=10 (1)
2x+3y=24 (2)
(2) - 2×(1) ⇒ y=4
now ,we replace y by 4 in equation (1)
x = 10 - 4 = 6.
:)
Answer: i think it would be D
Step-by-step explanation: