Answer:
Each car takes about 9 minutes to be washed.
Answer:
32 pavers
Step-by-step explanation:
step 1
Find out the area of one square paver
The area of a square is
where
s is the length side of the square
we have
substitute
step 2
Find out the area of the rectangular patio
we know that
The area of a rectangle is
we have
substitute
step 3
Find out the number of pavers needed to build the patio
Divide the area of the rectangular patio by the area of one paver
Answer(s):
1: -6
2: 31/3=10.3(with repeat)=10 1/3
3: 0
4: 21/4=5.25=5 1/4
5: -4
6: 6
7: 3
8: 2
9: -13
10: -7
Hope I helped! :)
Answer:
A. 5x² - 7 - 72 = 0
5x² - 79 = 0
x = ± √-4ac / 2a
x = ± √- 4 (5) (-79) / 2 (5)
x = ± √ 1580 / 10
x = ± 39.749/10
x = + 39.749/10 x = -39.749/10
= 3.9749 = - 3.9749
B. x² + 2x - 5 = 0
x = - b ± √b² - 4ac / 2a
= - 2 ± √2² - 4 (1) (-5) / 2 (1)
= - 2 ± √4 + 20 / 2
= - 2 ± √ 24 / 2
x = - 2 + 4.898 /2 x = - 2 - 4.898 / 2
= 2.898/2 = -6.898/2
= 1.449 = - 3.449
C. 3x² + 2x - 4 = 0
x = - b ± √b² - 4ac / 2a
= - 2 ± √2² - 4 (3) (-4) / 2 (3)
= - 2 ± √4 + 48 / 6
= - 2 ± √ 52 / 6
x = - 2 + 7.211 /6 x = - 2 - 7.211 / 6
= 5.211/6 = - 9.211 /6
= 0.869 = - 1.535
Hope that helps
Please to re-check answers
1.)Substitute using given information: 8x-2(3)-3
2.)Simplify: 8x-6-3=8x-9
8x-9
