All categories

3 years ago

Factor the expression. 7 + 28w

2 answers:

6 0

I'm not sure how your school teaches it, but here is how I learned factoring.

1.Make a box with a line through the middle.
2. Put 7 in one side and +28w in the other.
3. Prime factor the terms and put them under the numbers. Prime factor of 7 is 7 and 1 (you don't have to put the 1 under the 7). Prime factors of 28 is 7*2*2.
4.Find common factors. In this case:7. Circle the 7 in each side of the box and write a 7 to the left of the box. Now put what is remaining on top. Since there is nothing in the 7 box anymore put a 1 on top. 2*2 and the plus sign is still in the other side so put +4 on the top.

Now you have your answer. The number to the left is the number outside the parentheses. The numbers on top are in the parentheses. 7(1+4)

Nookie1986 [14]3 years ago

5 0

4w is the answer that i believe is correct

You might be interested in

HELP:( I know I’m slow and all asking all these question today but...

7nadin3 [17]

Second answer

Step-by-step explanation:

4 0

3 years ago

bank a charges a monthly service fee of $2.00 and a per check fee of 0.05, while bank B charges a monthly service fee of $1.50 a

saw5 [17]

2 + .05x = 1.5 +.1x .5 = .05x x =10 is numbere when costs are equal So the 11th check makes Bank A cheaper

3 0

3 years ago

Read 2 more answers

Find two consecutive positive integers wjose product is 42. (First integer= x, second integer=x+1

earnstyle [38]

It would be 6 and 7

Hope that helped!

5 0

3 years ago

Please help me ASAP!!! could someone help me do my geometry?

elena-14-01-66 [18.8K]

Answer:

9. m(YZ) = 102°

10. m(JKL) = 192°

11. m<GHF = 75°

Step-by-step explanation:

9. First, find the value of x

4x + 3 = 3x + 15 (inscribed angle that are subtended by the same arc are equal based on the inscribed angle theorem)

Collect like terms

4x - 3x = -3 + 15

x = 12

4x + 3 = ½(m(YZ)) (inscribed angle of a circle = ½ the measure of the intercepted arc)

Plug in the value of x

4(12) + 3 = ½(m(YZ))

48 + 3 = ½(m(YZ))

51 = ½(m(YZ))

Multiply both sides by 2

51*2 = m(YZ)

102 = m(YZ)

m(YZ) = 102°

10. First, find the value of x.

7x + 5 + 6x + 6 = 180° (opposite angles in an inscribed quadrilateral are supplementary)

Add like terms

13x + 11 = 180

13x = 180 - 11

13x = 169

x = 169/13

x = 13

7x + 5 = ½(m(JKL)) (inscribed angle of a circle = ½ the measure of the intercepted arc)

Plug in the value of x

7(13) + 5 = ½(m(JKL))

96 = ½(m(JKL))

Multiply both sides by 2

2*96 = m(JKL)

m(JKL) = 192°

11. First, find x.

5x + 15 = ½(11x + 18) (inscribed angle of a circle = ½ the measure of the intercepted arc)

Multiply both sides by 2

2(5x + 15) = 11x + 18

10x + 30 = 11x + 18

Collect like terms

10x - 11x = -30 + 18

-x = -12

Divide both sides by -1

x = 12

m<GHF = 5x + 15

Plug in the value of x

m<GHF = 5(12) + 15

m<GHF = 60 + 15

m<GHF = 75°

4 0

3 years ago

The hourly wages earned by 20 employees are shown in the first box and whisker plot below. The person earning $15 per hour quits

serg [7]

I added the plots in the attachments.

Answer:

The mean will decrease

The median will remain the same

Explanation:

1- checking the mean:

Mean of the salaries is calculated as follows:

$Mean = \frac{sum-of-salaries}{number-of-employees}$

Now, we can note that two parameters affect the mean, let's consider each:

a. Number of employees:

We are given that one employee is replaced with another. This means that the number of employees did not change

b. Sum of salaries:

We are given that a person earning $15 left and the new person earns $7. This means that:

New sum of salaries = old sum of salaries - 15 + 7 = old sum of salaries - 8

This means that the sum of salaries decreased by 8

Now, for the mean:

We can conclude that since the numerator decreased while the denominator stayed the same, the mean will decrease

2- checking the median:

In the whisker plots, the median is represented by the vertical line inside the plot.

In the first plot, we can note that the vertical line is nearly half the distance between 9 and 10. This means that, for the first plot, the median is approximately 9.5

In the second plot, the place of the median is unchanged. It is still approximately midway between 9 and 10 which means that the median in the second plot is approximately 9.5

Therefore, the median of the data remains unchanged.

Hope this helps :)

5 0

3 years ago

Read 2 more answers