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Svetlanka [38]
3 years ago
5

When x= 5 the value of the expression 20/-25 + x (x - 10) is

Mathematics
2 answers:
ASHA 777 [7]3 years ago
3 0
The answer is -25.8 because 5-10=-5, -5*5=-25, then you simplify fraction and add/subtract
garik1379 [7]3 years ago
3 0

Answer:

\frac{-129}{5}

Step-by-step explanation:

We have been given an expression \frac{20}{-25}+x(x-10). We are asked to evaluate our given expression, when x=5.

To evaluate our given expression, we will substitute x=5 in our given expression as:

\frac{20}{-25}+5(5-10)

-\frac{4}{5}+5(-5)

-\frac{4}{5}-25

Make a common denominator:

-\frac{4}{5}-\frac{5*25}{5}

-\frac{4}{5}-\frac{125}{5}

\frac{-4-125}{5}

\frac{-129}{5}

Therefore, the value of our given expression \frac{-129}{5}.

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Find the value of x that verifies that l ⊥ m.
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Answer:

X= 12

Step-by-step explanation:

Simplifying

4x + -2 = 46

Reorder the terms:

-2 + 4x = 46

Solving

-2 + 4x = 46

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2' to each side of the equation.

-2 + 2 + 4x = 46 + 2

Combine like terms: -2 + 2 = 0

0 + 4x = 46 + 2

4x = 46 + 2

Combine like terms: 46 + 2 = 48

4x = 48

Divide each side by '4'.

x = 12

Simplifying

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Step-by-step explanation:

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What is the equation of line perpendicular to y-3=-4(x+2) and passee through the point (-5,7
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Answer: y=\frac{1}{4}x+\frac{33}{4}


Step-by-step explanation:

1. By definition, two slopes are perpendicular if their slopes are negative reciprocals of each other. So, let's find the slope of the other line.

2. The equation given in the problem is written in Point-slope form:

y-y_1=m(x-x_1)

Where m is the slope.

3. Therefore, the slope of its perpendicular line must be:

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