Answer:
b = ±16
Step-by-step explanation:
Normally to find the number we add to make it a perfect square
We take the coefficient of x
b
Divide by 2
b/2
Then square it
(b/2) ^2
In this case, we are adding 64
(b/2) ^2 = 64
Take the square root of each side
sqrt((b/2) ^2) = sqrt(64)
b/2 = ±8
Multiply each side by 2
b/2*2 = ±8 *2
b = ±16
Answer:
= 0.15384615384 = 15.38%
Step-by-step explanation:
There are 4 7 cards and 4 queen cards so,
+ =
150/200×100%=75%
75% of 200 miles is 150 miles
<span>A) 5x + 2y= -17
B) 3x -2y = -7
Adding the 2 equations, we get
8x = -24
x = -3
</span><span>B) 3*-3x -2y = -7
-9 - 2y = -7
2y = -2
y = -1
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