Answer:
x = 4 or x = 12
Step-by-step explanation:
Given:
y = -10x² + 160x - 430
When y = $50
50 = -10x² + 160x - 430
50 + 430 = -10x² + 160x
480 = -10x² + 160x
-10x² + 160x - 480 = 0
Divide through by -10
x² - 16x + 48 = 0
Solve the quadratic equation using factorization method
+48 = -12 × -4
-16 = -12 -4
Therefore,
-12 and -4 are both factors
x² - 16x + 48 = 0
(x - 4 )(x - 12 ) = 0
x - 4 = 0
x = 4
OR
x - 12 = 0
x = 12
D
C
B
D
Hope I helped!
Giving me brainliest is much appreciated! =)
Answer:
Hello! :) have a good day!
2x + 12
Answer:
There's 10
Step-by-step explanation:
You count the little squares, which give you 9 and then you count the big square that all of the little squares are in, which gives you 10 squares in total
<span>How many ounces are in 2 1/2 pounds .( 16 ounces =1 pound )
Convert 2 1/2 to improper fraction
1 = 2/2
2 1/2 = 5/2
Next, multiply 16 with 5/2
16 x 5 = 80
Divide 80 with 2
80/2 = 40
40 oz is your answer
hope this helps</span>
