P + r + h = 10 <== mark
5p + 2r + 3h = 28 <== jessica
3p + 3r + h = 20 <== nate
p + r + h = 10
3p + 3r + h = 20...multiply by -1
--------------------
p + r + h = 10
-3p - 3r - h = -20 (result of multiplying by -1)
-------------------add
-2p - 2r = -10
p + r + h = 10...multiply by -3
5p + 2r + 3h = 28
---------------------
-3p - 3r - 3h = -30 (result of multiplying by -3)
5p + 2r + 3h = 28
--------------------add
2p - r = -2
-2p - 2r = -10
2p - r = -2
---------------add
-3r = -12
r = -12/-3
r = 4
2p - r = -2
2p - 4 = -2
2p = -2 + 4
2p = 2
p = 1
p + r + h = 10
1 + 4 + h = 10
5 + h = 10
h = 10 - 5
h = 5
Jessica downloaded : 5p + 2r + 3h = 28
5(1) + 2(4) + 3(5) = 28
5 + 8 + 15 = 28
28 = 28 (correct)......she got 5 pop, 8 rock, and 15 hip hop
Nate downloaded : 3p + 3r + h = 20
3(1) + 3(4) + 5 = 20
3 + 12 + 5 = 20
20 = 20 (correct)...he got 3 pop, 12 rock, and 5 hip hop
Mark downloaded : p + r + h = 10
1 + 4 + 5 = 10
10 = 10 (correct)....he got 1 pop, 4 rock, and 5 hip hop <===
Answer:
13/8
Step-by-step explanation:
Answer:
38.4
Step-by-step explanation:
(multiply) hkssfejshwjwjgwskfhkdshejkdhdc (don't mind the random letters it needed to be 20 characters)
<span>12X = -36
Divide 12 on both sides
Final Answer: X=-3</span>
D. (2,3)
Explanation:
We already know that x=2, so of we plug in 2 for x, we should get the y value.
Once we plug in 2 for x we should get the equation:
2(2)+3y=13.
Simplify that and we get:
4+3y=13.
Subtract 4 from both sides and we get:
3y=9.
Divide both sides by 3 and we get:
y=3.
This means that your ordered pair should be (2,3).
Hope this helps :)
