10 mean 100%
x mean 7%
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x=7*10/100 = 70/100 = 0,7
hope this helped
A pile of CD is 40 centimeters high
each CD is 8 millimeters
1 centimeter = 10 millimeters
40(10) = 400 millimeters high
400/8 = 50
50 CD in alll
hope this helps
12 divided by 4 squared is 12 divided by 2 which is 6
5/8 x 3/10= 3/16
8/15 x 5/12 x 9/10= 3/5
8/3 x 6/7 x 5/16= 5/7
x² - 3x - 10
x² = x * x
10 can be factored:
1 x 10 ⇒⇒⇒ difference between factors = 9
2 x 5 ⇒⇒⇒ difference between factors = 3 ⇒ (The correct pair)
(x-5)(x+2) = x(x+2) - 5(x+2)
= x² + 2x - 5x - 10
= x² - 3x - 10
x - 5 = 0 ⇒⇒⇒ x = 5
x + 2 = 0 ⇒⇒⇒ x = -2
