3 years ago

How do I simplify expressions such as 4(2r+6y)

Mathematics

2 answers:

umka2103 [35]3 years ago

7 0

You multiply 4 and 2r and 4 and 6y to get rid of the parentheses. So I'd n 8r+24y

e-lub [12.9K]3 years ago

4 0

Expression: 4r * 8y

I think this is the answer

You might be interested in

Kareem purchased several packs of gum to place in gift baskets for $1.26 each. He spent a total of $8.82. How many packs of gum

777dan777 [17]

Answer: 7 packs of gum.

Step-by-step explanation:

If the total amount of the purchase is $8.82 and the individual price is $1.26, to find out how many packs Kareem purchased, we need to divide the total amount spent ($8.82) by the amount of each pack ($1.26), so:

8.82 ÷ 1.26 = 7

So, Kareem bought 7 packs of gum.

5 0

3 years ago

The gas tank holds a total of 15 gallons of gas.how many miles can the car travel with a full tank of gas

djverab [1.8K]

Answer:

....

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2455 subjects randomly select

Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : $\alpha=1-0.99=0.01$

Number of subjects (n) = 2455

Number of surveys returned = 931

The probability of surveys get return will be :-

$p=\dfrac{931}{2455}=0.379226069246\approx0.38$

The confidence interval for proportion is given by :-

$p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}$

$0.38\pm z_{0.005}\times\sqrt{\dfrac{0.38(1-0.38)}{2455}}\\\\=0.38\pm(2.576)0.0098\\\approx0.38\pm0.025=(0.355,0.405)$

Hence, the 99% confidence interval for the proportion of returned surveys : (0.355,0.405)

5 0

3 years ago

Y=x+6<br>x+y=8<br><br>now graph 3 points on the line x+y=8

Brums [2.3K]

Answer:

y=2

Step-by-step explanation:

advgdsfh usb hey do f ft h

8 0

3 years ago

Oceanside bike rental shop charges a 13 dollar fixed rental free plus 9 hour dollars and hour for renting a bike sam rents a bi

ollegr [7]

Answer:

13 + 9 x 6

Step-by-step explanation:

3 0

3 years ago