Answer:
option C
Step-by-step explanation:
![3x^2+2x-1\\\\=(3x+a)(x+b)\\\\(3b+a)=2\\\\ab=-1](https://tex.z-dn.net/?f=3x%5E2%2B2x-1%5C%5C%5C%5C%3D%283x%2Ba%29%28x%2Bb%29%5C%5C%5C%5C%283b%2Ba%29%3D2%5C%5C%5C%5Cab%3D-1)
and here we think of b=1 and a=-1
so we have
![(3x-1)(x+1)](https://tex.z-dn.net/?f=%283x-1%29%28x%2B1%29)
<h3>
Answer: -20</h3>
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Work Shown:
Let x be the location of E on the number line.
Since C is the midpoint of E and F, this means we can find C's location by adding E and F together and dividing that sum by 2
midpoint = (endpoint1 + endpoint2)/2
C = (E+F)/2
Plug in E = x, C = -8 and F = 4. Then solve for x
C = (E+F)/2
-8 = (x+4)/2
(x+4)/2 = -8
x+4 = 2(-8) .... multiplying both sides by 2
x+4 = -16
x = -16-4 .... subtract 4 from both sides
x = -20
The location of point E on the number line is -20
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As a check, lets add E and F to get E+F = -20+4 = -16
Then cut this in half to get -16/2 = -8, which is the proper location of point C
This confirms our answer.
Answer:
45%
Step-by-step explanation:
To solve this, we can turn it into a fraction. 18/40. If we are trying to determine what percentage he spent on fruit out of the money he spent at the grocery store, then we will divide the denominator (40) by the numerator (18). 18 divided by 40 is 0.45. Next, we multiply 0.45 by 100, which leaves us with 45%. Justin spent 45% on the fruit.
2 liters = 20 deciliters
20 x 0.15 = 3.00
the answer is $3.00