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3 years ago

Which expression is equivalent to 1 over 5 m − 20?

Mathematics

1 answer:

laiz [17]3 years ago

7 0

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5m -20

factor out a 5 in the denominator

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5 (m -4)

Choice A

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Which number line represents the solution of 4 - 3x > 13?

Oksanka [162]

Answer:

$x$

Step-by-step explanation:

Given inequality:

$4-3x>13$

In order to represent the solution on the number line, we will first solve the given inequality.

We have

$4-3x>13$

Subtracting both sides by 4.

$4-3x-4>13-4$

$-3x>9$

Dividing both sides by -3.

$\frac{-3x}{-3}$ [On dividing both sides by a negative number the sign of the inequality reverses.]

$x$

So, solution of this inequality will range from -3 to -∞

The number line is represented below.

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3 years ago

The speeders soccer team charged $12 to wash each car at a fundraiser car wash.The team collected a total os $672 by the end of

sukhopar [10]

They washed 56 cars because 672/12=56

4 0

3 years ago

Read 2 more answers

11. If you want to enlarge a square with area 36 square inches

larisa86 [58]

Answer:

e. 72 inches

Step-by-step explanation:

Well, firstly to find the lengths of the sides, we would have to find the square root of 36 (which is 6, as 6x6=36).

Now, if we enlarge the square by SF 3, the new side lengths would be 6x3=18 inches. That is only one side.

Now we know the length of one side, we can do 18x4 (because as we all know, squares have 4 sides) to find the perimeter.

18x4=72 inches. This means the answer is option e.

7 0

3 years ago

Graph the line that passes through the points (4,−9) and (−3,−2) and determine the equation of the line.

Roman55 [17]

Answer:

the equation is y= -x-5

3 0

3 years ago

Read 2 more answers

URGENT WILL GET 20 and Brainlest

My name is Ann [436]

The polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck is:

$f(x) = -0.04x^2 + 18x + 75$

Solution:

The cost of distributing by train can be modeled as:

$-0.07x^2 + 40x - 105$

The cost of distributing by truck can be modeled as:

$-0.03x^2 + 22x - 180$

where x is the number of tons of product distributed

To find: Difference between the cost of distributing by train and the cost of distributing by truck

Difference = cost of distributing by train - cost of distributing by truck

Let f(x) = difference in cost between trains & trucks

$f(x) = (-0.07x^2+40x-105) - (-0.03x^2 +22x - 180)$

$f(x) = -0.07x^2 + 40x -105 + 0.03x^2 -22x + 180$

$Combine\ the\ like\ terms\\\\f(x) = -0.07x^2 +0.03x^2 + 40x - 22x +180-105\\\\Add\ the\ like\ terms\\\\f(x) = -0.04x^2 + 18x + 75$

Thus polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck is found

8 0

3 years ago