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kogti [31]
3 years ago
14

Simplify the expression below. (–7x + 4) – (2x – 8)

Mathematics
1 answer:
Elanso [62]3 years ago
5 0

Answer:

- 9x + 12

Step-by-step explanation:

Given

(- 7x + 4) - (2x - 8) ← distribute parenthesis by 1 and - 1

= - 7x + 4 - 2x + 8 ← collect like terms

= - 9x + 12

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What is the value of this expression 1/4−3 ? 12 1/12 64 1/64
kompoz [17]
1/4^(-3) = 4^3 = 64.
8 0
3 years ago
Write an equation of the line that passes through a pair of points:<br> (-5, - 2), (4, 5)
attashe74 [19]

Answer (<u>assuming it can be written in slope-intercept form)</u>:

y = \frac{7}{9} x+\frac{17}{9}

Step-by-step explanation:

1) First, find the slope of the line. Use the slope formula, m = \frac{y_2-y_1}{x_2-x_1}. Substitute the x and y values of the given points into the formula and solve:

m = \frac{(5)-(-2)}{(4)-(-5)} \\m  = \frac{5+2}{4+5} \\m = \frac{7}{9}

So, the slope is \frac{7}{9}.

2) Now, use the point-slope formula y-y_1 = m (x-x_1) to write the equation of the line. Substitute m, x_1, and y_1 for real values.

Since m represents the slope, substitute \frac{7}{9} for it. Since x_1 and y_1 represent the x and y values of one point the line intersects, choose from any one of the given points (it doesn't matter which one, either way the result equals the same thing) and substitute its x and y values into the formula as well. (I chose (4,5), as seen below.) From there, isolate y to place the equation in slope-intercept form (y = mx + b format) and find the following answer:

y-(5) = \frac{7}{9} (x-(4))\\y-5 = \frac{7}{9} (x-4)\\y -5=\frac{7}{9} x-\frac{28}{9}\\y = \frac{7}{9}  x-\frac{28}{9} +\frac{45}{9}\\y = \frac{7}{9} x+\frac{17}{9}

6 0
3 years ago
Find the missing number<br>86, 47, 75, 48-16<br><br>97, 47, 82, 63-?​
Sergio039 [100]

Answer:

the missing number is 34 because they was going in a pattern

Step-by-step explanation:

7 0
3 years ago
What is the value of "three less than the quotient of six and a number, increased by nine" when n = 3?
ale4655 [162]

Answer:

Step-by-step explanation:

3 less then the quotient of 6 and a number, increased by 9

((6/n) - 3) + 9.....when n = 3

((6/3) - 3) + 9

2 - 3 + 9

-1 + 9

8 <====

3 0
3 years ago
One computer has a mass of 0.8 kilogram and another has a mass of 800 grams. Compare the masses of the computers. Use &gt;, &lt;
Maslowich
The two masses are equal, since 0.8 Kg = 800 g
7 0
3 years ago
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