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3 years ago

Can you guys factor this problem completely for differences of squares?

Mathematics

1 answer:

Aneli [31]3 years ago

8 0

a² - b² = (a - b)(a + b)

49x² - 9 = (7x)² - 3² = (7x - 3)(7x + 3)

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Whats 91 divided by 2605

riadik2000 [5.3K]

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Step-by-step explanation: I basically just divided, but if you wanted the rounded version, it is 0.34

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3 years ago

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Katena32 [7]

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Step-by-step explanation:

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2 years ago

Solve the system of equations by substitution y=5x-13 and 5x+2y=19

castortr0y [4]

Y = 5x - 13 ----------- (1)
5x + 2y = 19 --------- (2)

Sub (1) into (2):

5x + 2(5x -13) = 19
5x + 10x - 26 = 19
15x = 19 + 26
15x = 45
x = 3 -------- sub back into (1)
y = 5(3) - 13
y = 15 - 13
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Ans: x = 3, y = 2

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3 years ago

Evaluate 18 -8(14 + 4) + 42.

Alina [70]

Answer:

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Step-by-step explanation:

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3 years ago

A triangle has two angles that measure 18.6 degrees and 113.4 degrees respectively. what is the measure of the third angle?

spin [16.1K]

Answer:

$x = 48$

Step-by-step explanation:

$18.6 + 113.4 + x = 180$

$132 + x = 180$

$x = 180 - 132$

$x = 48$

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3 years ago