Answer:
12
Step-by-step explanation:
6y - 3z
6(4) - 3(4)
24 - 12
12
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Answer:
A: This quadratic expression can be factored by finding the correct pair of binomial factors
B: 4x + 5
B: 2x - 3
Step-by-step explanation:
8x² - 2x - 15 can only be factorised by finding a correct pair of binomial factors because 15 and 8 are not a perfect square.
Thus,
To find the correct pair, find the 2 numbers that would give us -120 (8*15) when multiplied, and would also give us -2 when added together.
(-12) × (+10) = -120
(-12) + (+10) = -2
-12 and +10 would be the factors to use. Thus, let's factorised as follows:
8x² - 2x - 15
8x² - 12x + 10x - 15
(8x² - 12x) + (10x - 15)
Look for common factors
4x(2x - 3) +5(2x - 3)
(4x + 5)(2x - 3)
50/100 + 70x / 100 = (5 + x) * 22/100
50 + 70x = <span>(5 + x) * 22
50 + 70x = 110 + 22x
48x = 60
х = 1 1/4 = 1,25</span>
Answer:
12
Step-by-step explanation:
12 / 13 = x / 13
Cross Multiply,
12 * 13 = 13 * x
x = ( 12 * 13 ) / 13
x = 12
