4x+7y=47 /*4 ------>16x + 28y=188
5x-4y=-5 /*7 -------->35x-28y=-35
16x + 28y=188, add this two equations
35x-28y=-35
16x + 28y+35x-28y=188-35
16x +35x=188-35
51x =153m
x=3
5x-4y=-5
5*3-4y=-5
15-4y=-5
4y=15+5
4y=20
y=5
Answer (3,5), B
All you must do is subtract the two numbers, 50.01 minus 19.56 equals 30.45.
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Answer:
3/4
Step-by-step explanation:
We can find the slope using two points
( 0,-5) and ( 4,-2)
The slope is given by
m = ( y2-y1)/(x2-x1)
= ( -2- -5)/( 4-0)
= (-2+5)/(4-0)
=3/4
33%=0.33
33% of 39=0.33*39=12.87
discount is 12.87
minus
39-12.87=26.13
sale price=$26.13
discount=$12.87
Step-by-step answer:
Given:
k(x)=8x+7q...........................(1)
Evaluate: k(2q^2+3q) .......(2)
Solution:
From (1)
k(x) = 8x+7q
Substitute x=2q^2+3q into (1)
k(2q^2+3q)
= 8(2q^2+3q) + 7q
= 16q^2 + 24q + 7q
= 16q^2 + 31q
