Answer:
-45
Step-by-step explanation:
9*(-5)=-45
Answer:
the length is 4 and the width is 5
Step-by-step explanation:
sorry if I'm wromg
Answer:
what's the cost of the books then
Step-by-step explanation:
X = pencils, y = pens
8x + 6y = 8.50
4x + 4y = 5.....multiply by -2
----------------
8x + 6y = 8.50
-8x - 8y = -10 (result of multiplying by -2)
-----------------add
-2y = - 1.50
y = -1.50 / -2
y = 0.75 <=== pens cost 0.75
4x + 4y = 5
4x + 4(0.75) = 5
4x + 3 = 5
4x = 5 - 3
4x = 2
x = 2/4
x = 0.50 <== pencils cost 0.50
Answer:
0
Step-by-step explanation:
Changing x to y and y to x:
I hope I helped you.