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3 years ago

-20= -4x -6x + 2(10x)

Mathematics

1 answer:

ki77a [65]3 years ago

4 0

Answer:

x = -2

Step-by-step explanation:

-20 = -4x - 6x + 2(10x)

Simplify both sides:

-20 = -4x - 6x + 20x

Combine like terms:

-20 = 10x

Isolate the variable:

x = -2

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Solve for x (picture attached) Thank you!

Hatshy [7]

Answer:

x= 52

Step-by-step explanation: you have a 90 degree angle the other side would be 90 also. you take 90 and subtract 38 to get the missing value?

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3 years ago

Please show your work and explain it.

Maru [420]

Answer:

$f(x)=\dfrac{x+2}{2(x-2)}$

Step-by-step explanation:

Remember when you divide fractions, you need to get the reciprocal of the divisor and multiply. So your first simplification would be:

$\dfrac{x^2+4x+4}{x^2-6x+8}\div\dfrac{6x+12}{3x-12}\\\\=\dfrac{x^2+4x+4}{x^2-6x+8}\times\dfrac{3x-12}{6x+12}\\\\=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}$

Next we factor what we can so we can further simplify the rest of the equation:

$=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}\\\\=\dfrac{(x+2)(x+2)(3x-12)}{(x^2-6x+8)(6(x+2))}\\\\$

We can now cancel out (x+2)

$=\dfrac{(x+2)(3x-12)}{(x^2-6x+8)(6)}$

Next we factor out even more:

$=\dfrac{(x+2)(3)(x-4)}{(x-2)(x-4)(6)}$

We cancel out x-4 and reduce the 3 and 6 into simpler terms:

$=\dfrac{(x+2)(1)}{(x-2)(2)}$

And we can now simplify it to:

$=\dfrac{x+2}{2(x-2)}$

6 0

3 years ago

Need help pls help me

Maurinko [17]

Answer:

A) 7, 2

B) 1, 5

C) 6, 3

6 0

3 years ago

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Find the slope line (-2 -1) and (-4 -7)

Alenkinab [10]

Answer:

$m=3$

Step-by-step explanation:

Slope formula

$m=\frac{y_2-y_1}{x_2-x_1}$

Here

$(x_1, y_1) = (-2, -1) \ \ and \ \ (x_2, y_2) = (-4, -7)$

Slope can be calculated as

$m=\frac{-7-(-1)}{-4-(-2)}$

$m= \frac{-6}{-2} \\m=3$

7 0

3 years ago

Drag the amounts to order them from greatest to least.

Debora [2.8K]

For easier comparison, convert all amounts to grams:

30 oz * 28.3 grams = 849 grams

1.6 lb * (16 oz/1lb) * (28.3 grams) = 724.48 grams

800 grams

Comparing the three quantities, the highest is 30 oz (849 grams); next is 800 grams, then 1.6 lb (724.48 grams)

4 0

3 years ago

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