Answer:
D
Step-by-step explanation:
Given
- (x + 3) - 2(4x - 3) ← distribute both parenthesis
step 1
= - x - 3 - 8x + 6 ← collect like terms
step 2
= - 9x + 3
3.4, 4.7, 1.9, 7.6, and 6.5
Rearrange the numbers in ascending orders:
1.9 , 3.4, 4.7, 6.5, 7.6
⇒ The median (the number in the middle) is 4.7
Answer: False
2 combinations using the entire budget would be 3 pairs of Jordans and 4 pairs of Adidas, and 2 pairs of Jordans and 8 pairs of Adidas; 1 combination under budget would be 2 pairs of Jordans and 4 pairs of Adidas; and 1 combination over budget would be 4 pairs of Jordans and 4 pairs of Adidas.
Given that Sean has an annual shoe budget of $ 640 and on average, a pair of Jordans cost $ 160, and a pair of Adidas cost $ 40, to provide 2 combinations that use his entire budget, 1 combination that would be under budget, and 1 combination that would be over his budget, the following calculations must be made:
Using the entire budget:
- Combination 1 = 3 x 160 + 4 x 40 = 640 = 3 pairs of Jordans and 4 pairs of Adidas
- Combination 2 = 2 x 160 + 8 x 40 = 640 = 2 pairs of Jordans and 8 pairs of Adidas
- Combination 3 = 1 x 160 + 12 x 40 = 640 = 1 pair of Jordans and 12 pairs of Adidas
Under budget:
2 x 160 + 4 x 40 = 480 = 2 pairs of Jordans and 4 pairs of Adidas
Over budget:
4 x 160 + 4 x 40 = 800 = 4 pairs of Jordans and 4 pairs of Adidas
Learn more about combinations in brainly.com/question/8018593
Answer:
7 + 1.5 = 8.5
Step-by-step explanation:
hopefully i got that right
12 = x² - x
12 - 12 = x² - x - 12
0 = x² - x - 12
x² - x - 12 = 0
x = <u>-(-1) +/- √((-1)² - 4(1)(-12))</u>
2(1)
x = <u>1 +/- √(1 + 48)</u>
2
x = <u>1 +/- √(49)
</u> 2
x = <u>1 +/- 7</u>
2
x = 0.5 +/- 3.5
x = 0.5 + 3.5 x = 0.5 - 3.5
x = 4 x = -3
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