First, we know that y is equal to -8x, so we can move the -8x to replace y in the first equation, then in the first equation we get -8x=6x-14, subtract 6x on both sides, -14x=-14, x=1
Answer:
Step-by-step explanation:
Given
Required
Determine side x
The hypotenuse (H) is calculated using:
Substitute 9 for x:
So:
Answer:
$6.50
Step-by-step explanation:
Let the cost of a bowl and a jug be $b and $j respectively.
3b +j= 13.70 -----(1)
j= b +4.10 -----(2)
Substitute (2) into (1):
3b +b +4.10= 13.70
4b +4.10= 13.70 <em>(</em><em>simplify</em><em>)</em>
4b= 13.70 -4.10 <em> (-4.10 on both sides)</em>
4b= 9.60
b= 9.60 ÷4 <em>(÷4 on both sides)</em>
b= 2.40
Substitute b= 2.40 into (2):
j= 2.40 +4.10
j= 6.50
Thus, the jug costs $6.50.
The vertical angle is right across so it would be <DGC
Answer:
Step-by-step explanation:
20x+5y=15
Subtract 20x from both sides.
5y=15−20x
Divide both sides by 5.
__5y_ = _15-20x_____
5 5
y= __15-20______
5
Divide 15−20x by 5.
y=3−4x
