Answer:
Step-by-step explanation:
Let football cost be f and basketball cost be b
<u>We have two equations as per given:</u>
- 5f + 14b = 110
- 10f + 6b = 82.50
We need to find b, therefore we'll eliminate f
<u>To do so we'll double the first equation and subtract the second one:</u>
- 2(5f + 14b) - (10f + 6b) = 2(110) - 82.50
- 28b - 6b = 220 - 82.50
- 22b = 137.5
- b = 137.5/22
- b = 6.25
Each basketball costs $6.25
If a, b and c are the lengths of the sides of a triangle then
if a ≤ b ≤ c, then a + b > c.
A: 4, 12, 15
4 + 12 = 16 > 15 CORRECT :)
B: 4, 13, 15
4 + 13 = 17 > 15 CORRECT :)
C: 4, 4, 15
4 + 4 = 8 < 15 INCORRECT :(
D: 4, 15, 15
4 + 15 = 19 > 15 CORRECT :)
E: 4, 11, 15
4 + 11 = 15 INCORRECT :(
F: 4, 15, 19
4 + 15 = 19 INCORRECT :(
<h3>Answer: A: 12, B: 13, D; 15</h3>
<span>you should invest $3000 at 6% and $5000 at 15% to earn $930 annually.</span>
Well if my math is correct, x= -7, meaning 4x-4= (4*-7)-4. That equals -32.
Hope this helps.
