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3 years ago

So I really need help with my pre algebra. Expand x(4-3.4y)

Mathematics

2 answers:

dalvyx [7]3 years ago

6 0

The answer is

x*4+x*-3.4y

valentina_108 [34]3 years ago

5 0

You just need to multiple whats in front of the bracket by whats inside it
x(4-3.4y)= 4x-3.4xy because you multiple the 4
and the -3.4y by x

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Use the Exterior Angle Theorem to find the measure of each angle.

navik [9.2K]

Answer:

∠ C = 36°

∠ D= 81°

∠ DEC= 63°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the interior opposite angles.

∴ (11y + 4) + (5y + 1) = 117

11y + 4 + 5y + 1 = 117

16y + 5 = 117

16y = 117-5

16y = 112

y = 112÷16

y = 7

∠ C = 5×(7) + 1 = 36°

∠ D = 11×(7) + 4 = 81°

∠ DEC = 180- 117 = 63°

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3 years ago

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Sindrei [870]

Answer:

a=2

Step-by-step explanation:

Firstly, in order to simplify the expression, we should aim to combine the two terms given. In order to do this, both must have the same denominator. We can give them the same denominator by multiplying the second term $-\frac{2}{x+2}$ by $\frac{x+2}{x+2}$ . This way the fraction value remains the same but now has the same denominator as the first term:

$-\frac{2}{x+2} *\frac{x+2}{x+2} \\\\=\frac{(-2)(x+2)}{(x+2)(x+2)} \\\\=\frac{-2x-4}{(x+2)^{2}}$

From here we can now combine the two terms:

$\frac{2x+6}{(x+2)^{2}} +\frac{-2x-4}{(x+2)^{2}} \\\\= \frac{(2x+6)+(-2x-4)}{(x+2)^{2}} \\\\\\=\frac{2x+6-2x-4}{(x+2)^{2}}\\\\= \frac{2}{(x+2)^{2}}$

Therefore, a = 2.

Hope this helped!

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2 years ago

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rosijanka [135]

The answer would be 0.02, I believe

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3 years ago

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4 years ago

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SashulF [63]

Answer:

14π in

Step-by-step explanation:

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3 years ago