So first you have to move the -2 over to the opposite side.
8(9x-4)=3+2+2
Then you can simplify the right side
8(9x-4)=7
Then you distribute
8*9x=72x
8*-4=-32
so now you have...
72x-32=7
Then you move the 37 over
72x=39
Then you divide by 72 to isolate x
x=39/72 or x= 13/24 or <span>x=0.54167</span>
So
<span>20% of 18.50 = ____ </span>
<span>to get this you multiply </span>
<span>20% is .20 in decimal form </span>
<span>18.50 x .20 = $3.70 </span>
<span>so 20% is $3.70, which means the discount is $3.70 </span>
<span>so then you subtract $3.70 from the original price of 18.50 and you get </span>
<span>$14.80 which is your answer (:</span>
Substitute y=4x to the second equation:
x^2 + (4x)^2 = 17
x^2 + 16x^2 = 17
17x^2 = 17
x^2 = 17/17
x^2 = 1
x = 1 and -1
When x=1, y=4(1) = 4
When x=-1, y=4(-1) = -4
Thus the solutions would be (1,4) and (-1,-4). That would correspond to D. and A.
8 is to 64 as 2 is to 16
x=16
Answer:
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Step-by-step explanation:
