Answer:
a = 9
Step-by-step explanation:
2(a + 7) = 5a - 13
We want to bring a to one side, I will choose to bring it to the right
First, expand the bracket by multiplying 2 with a + 7
2a + 14 = 5a - 13
Bring the -13 to the left by adding 13 to both sides
2a + 14 + 13 = 5a - 13 + 13
Simplify
2a + 27 = 5a
Bring the 2a to the right by subtracting 2a from both sides
2a - 2a + 27 = 5a - 2a
Simplify
27 = 5a - 2a
27 = 3a
Bring the 3 to the left by dividing both sides by 3
27÷3 = a
Simplify
a = 9
It’s =X+ and that’s ru answering
Answer:
100
Step-by-step explanation:
The attached "technology" shows that about 0.8327 of the league will weigh 165 pounds or more. That number is ..
0.8327 × 120 members = 99.92 members ≈ 100 members
About 100 members of the league will weigh 165 pounds or more.
Make a proportion.
Do base over height;

.

h is the height of the second triangle. Solve for h.
Cross multiply.
6h = 168
h = 28
The height of the second triangle is 28 cm.