1+2+8= 11
And she likes 8 out of the 11 tracks
So the probability is 8/11 or about 73%
M= movie cost
v= video cost
Create two equations with the given information. Solve for one variable in equation one. Use that answer to substitute into equation two.
2m+12v=$44
5m+3v=$29
Solve for one variable in equation 1:
2m+12v=44
Subtract 12v from both sides
2m=44-12v
Divide both sides by 2
m=(44-12v)/2
Substitute m answer in equation two:
5m+3v=$29
5((44-12v)/2)+3v=29
(220-60v)/2+3v=29
Multiply everything by 2 to eliminate the fraction
(2)(220-60v)/2+(2)(3v)=(2)(29)
220-60v+6v=58
220-54v=58
Subtract both sides by 220
-54v= -162
Divide both sides by -54
v= $3.00 cost per video
Substitute v value to find m value:
2m+12v=$44
2m+12(3.00)=44
2m+36=44
Subtract both sides by 36
2m=8
Divide both sides by 2
m=$4.00 cost per movie
Check:
5m+3v=$29
5(4.00)+3(3.00)=29
20.00+9.00=29
29=29
Hope this helps! Please mark me as brainliest if it does. :)
Answer:
Step-by-step explanation:
![\because \: f(x) = (2x - 1)(x + 4) \\ \therefore \:f(x) = 2x(x + 4) - 1(x + 4) \\ \therefore \:f(x) = 2x ^{2} + 8x - x - 4 \\ \therefore \:f(x) = 2x ^{2} + 7x - 4 \\](https://tex.z-dn.net/?f=%20%5Cbecause%20%5C%3A%20f%28x%29%20%3D%20%282x%20-%201%29%28x%20%2B%204%29%20%5C%5C%20%20%5Ctherefore%20%5C%3Af%28x%29%20%3D%20%202x%28x%20%2B%204%29%20%20-%201%28x%20%2B%204%29%20%5C%5C%20%5Ctherefore%20%5C%3Af%28x%29%20%3D%20%202x%20%5E%7B2%7D%20%20%2B%208x%20-%20%20%20x%20%20-%20%204%20%5C%5C%20%5Ctherefore%20%5C%3Af%28x%29%20%3D%20%202x%20%5E%7B2%7D%20%20%2B%207x%20%20-%20%204%20%5C%5C%20)
Step 2: commutative property of multiplication
Step 3: multiplicative inverse
Step 4: multiplicative identity
Answer:
8 + 4i
Step-by-step explanation:
according to the bi form, the solution to the expression √4+ √−4+√36 + √−4 would be 8 + 4i