All categories

2 years ago

A=2(L+W) (w) can some one help me

Mathematics

1 answer:

Lelu [443]2 years ago

7 0

Answer:

2Lw+2Ww

Step-by-step explanation:

you multiply the ones outside which are

2 and w

to give '2w'

then,

2w(L+W)

you expand the bracket by multiplying each term in it by 2w thus:

2w*L +2w*W

=2wL+2wW

You might be interested in

Tyra made 8 fewer jackets than zack they made 48 jackets altogether how many jackets did zac make

nikitadnepr [17]

Answer:

Zac Made 28 Jackets

Step-by-step explanation:

The way I solved it is by first dividing 48 by 2.

After that I subtracted 8 from Tyra's jackets and then guessed and checked.

I eventually got to the point where i found that Tyra made 20 jackets and Zac made 28 making up to 48 jackets in total.

3 0

3 years ago

The waitress and the hostess at a restaurant share the tips at the end of the shift the average amount earned in tips between th

soldi70 [24.7K]

The waitress will get 120 dollars

7 0

3 years ago

Can someone help please

Naddika [18.5K]

Answer:

I believe the answer is 8 because 8 can go in both 64 and 40.

Step-by-step explanation:

If you divide 64 by 8 then you get 8 and if you divide 40 by 5 you also get 8.

3 0

2 years ago

Read 2 more answers

What is the approximate volume of the cylinder use 22/7 for 3.14 round to the nearest whole number

erastova [34]

Answer:

the formula for a cylinder is πr^2•h

Step-by-step explanation:

just plug in the numbers, and you can change π to 3.14 for an approximate answer!

hopefully this helps you!

5 0

2 years ago

Read 2 more answers

Find the minimum sample size needed to estimate the percentage of Democrats who have a sibling. Use a 0.1 margin of error, use a

Brums [2.3K]

Answer:

The minimum sample size is $n =135$

Step-by-step explanation:

From the question we are told that

The confidence interval is $( lower \ limit = \ 0.44,\ \ \ upper \ limit = \ 0.51)$

The margin of error is $E = 0.1$

Generally the sample proportion can be mathematically evaluated as

$\r p = \frac{ upper \ limit + lower \ limit }{2}$

$\r p = \frac{ 0.51 + 0.44}{2}$

$\r p = 0.475$

Given that the confidence level is 98% then the level of significance can be mathematically evaluated as

$\alpha = 100 - 98$

$\alpha = 2\%$

$\alpha =0.02$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table

The value is

$Z_{\frac{\alpha }{2} } = 2.33$

Generally the minimum sample size is evaluated as

$n =[ \frac { Z_{\frac{\alpha }{2} }}{E} ]^2 * \r p (1- \r p )$

$n =[ \frac { 2.33}{0.1} ]^2 * 0.475(1- 0.475 )$

$n =135$

6 0

3 years ago