2 years ago

1. Select all the expressions that are equivalent to 4 - x.

Mathematics

1 answer:

viktelen [127]2 years ago

4 0

Step-by-step explanation:

It is required to find the expressions that are equivalent to 4-x. We can also write it as :

Option (b) : (4-x) = 4+(-x)

Option (c) : (4-x) = -x+4

Hence, the correct options are (B) and (C).

You might be interested in

5. If the covariance between the variables x and y is 18 and the variance

klasskru [66]

Answer:

The coefficient of correlation=0.5

Step-by-step explanation:

We are given that

Covariance between the variable x and y=18

Variance of x=16

Variance of y=81

We have to find the coefficient of correlation

We know that

Coefficient of correlation

$r=\frac{covariance(x,y)}{\sqrt{variance(x)}\times \sqrt{variance(y)}}$

Using the formula

$r=\frac{18}{\sqrt{16}\times \sqrt{81}}$

$r=\frac{18}{4\times 9}$

$r=0.5$

Hence, the coefficient of correlation=0.5

5 0

2 years ago

18-4y=42 help, please?

juin [17]

18-4y=42

4y = 18-42

4y=-24

y = - 6

5 0

2 years ago

The planet Mercury orbits around the sun at 29.74 miles per second. How many miles will mercury travel in 1 minute?

zaharov [31]

29.74*60=1,784.4
Mercury will travel 1,784 miles in a minute.

6 0

2 years ago

I need help on number 19.

8_murik_8 [283]

Add the fractions 1/4 and 3/8
First find the LCD of 1/4 and 3/8. 8 is the LCD.
Turn 1/4 into 2/8.
Now add.
3/8+2/8=5/8

Hope this helps!

6 0

3 years ago

Read 2 more answers

In which of the situations can information about Tyler be represented by the expression r + 3, when r represents information abo

Temka [501]

3 years older
3 inches taller
3 mild farther

4 0

2 years ago

Read 2 more answers