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3 years ago

Which pair shows equivalent expression

Mathematics

1 answer:

Elza [17]3 years ago

6 0

Answer:

3(x+2) = 3x + 6

Step-by-step explanation:

An equivalent expression is an expression that is equal. You need to find if the left and right side of the equal signs are equal to each other by reducing each to simplest terms.

Each of the expressions can be multiplied to find lowest terms by removing the parenthesis.

So 3(x+2) becomes 3x + 6

So x^2(3 + 2) becomes 3x^2 + 2x^2

So 3(x+2) becomes 3x + 6

-3(2+x) = -6 - 3x

Only A has equivalent or equal expressions.

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If f(x)=-4x+1 what is f(-x/2)

guapka [62]

Answer:

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

Step-by-step explanation:

given f(x)=-4x+1................(1)

x= $\frac{-x}{2}$ put in equ (1)

f(x)=-4x+1

f( $\frac{-x}{2}$ ) =-4( $\frac{-x}{2}$ )+1

f( $\frac{-x}{2}$ )=2x+1 answer

5 0

3 years ago

Find the interquartile range of the data.

likoan [24]

The answer is 14. Here is how I work it out.

First we are going have to identify quartile 1 and quartile 3.

So after putting the numbers in order from least to greatest mark the number with a half way point.

This is optional but it will help us spot the sections better.

31,33,35,41,43,|46,48,49,49,50

Next put parentheses around the remaining groups of numbers.

(31,33,35,41,43,)|(46,48,49,49,50)

For the next step we have to find the median of each group.

(31,33,35,41,43,)|(46,48,49,49,50)

The median of each group, are called the quartiles, the median of the lower half is quartile 1, and the median of the upper half is quartile 3.

Now subtract quartile 1 from quartile 3.

49 – 35 = 14

So the interquartile range of this data set is 14.

4 0

3 years ago

What's 75% off of 4.97

Alenkasestr [34]

That would be 1.2425

7 0

3 years ago

Read 2 more answers

How do you divide a decimal by a whole fraction

Otrada [13]

Answer

wherever the decimal is, put it directly on top of the dividing line thing. Now that the decimal looks like a regular whole number you can divide like you usually would. Whenever you do regular long division, your answer is always going to be on the top of the line. Your answer should have a decimal in it ... and that should be your answer.

7 0

3 years ago

Which relationships have the same constant of proportionality between y and x as in the equation y=1/2x Choose 3 answers:

Andrew [12]

Answer:

A and B has the same constant of proportionality

Step-by-step explanation:

$y \propto x$