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2 years ago

You are painting a rectangular tabletop. The length of the table top is 6 inches less than 3 times the

Mathematics

1 answer:

dedylja [7]2 years ago

3 0

Answer:

Step-by-step explanation:

Let l represent length and w represent width

We know that l = 3w-6

(3w-6)(w) = the area

Use distributive property

$Area = 3w^2-6w$

A is the correct answer

Hope this helps :)

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Bethany has 3.10$ in nickels and dimes. She has a total of 44 coins . What is the value of the nickels Bethany has

vlada-n [284]

Represent the unknows with n and d.

Then n+d = 44 (# of coins)

and

$0.05n + $0.10d = $3.10 (value of coins)

Solving the first equation for n, we get n = 44-d. Subst. 44-d for n in the 2nd equation:

0.05(44-d) + 0.10d = 3.10
Then 2.20 - 0.05d + 0.10d = 3.10, or
2.20 + 0.05d = 3.10, or 0.05d = 0.90. Solving for d,
0.90
d = -------- = 18
0.05

There are 18 dimes and 44-18 nickels. How many nickels is that? ;)

5 0

3 years ago

Read 2 more answers

It is estimated that there are 10^20 grains of sand on a beach in Florida in April. The beach is heavily eroded by tourists over

lyudmila [28]

$\bf \textit{how much is }\frac{1}{100}\quad of \quad 10^{20}?\implies \stackrel{\textit{one hundredth}}{\cfrac{1}{100}}\cdot 10^{20}\implies \cfrac{1}{10^2}\cdot 10^{20}
\\\\\\
10^{-2}\cdot 10^{20}\implies 10^{-2+20}\implies 10^{18}
\\\\\\
1,000,000,000,000,000,000~grains$

5 0

3 years ago

Yooo I just had MAD diarrhea D:

kow [346]

I’m sorry I usually drink water you can lose a lot of water while doing that . Try to not a lot maybe some crackers

5 0

3 years ago

What are the slope and one point on the graph of y-12=4/9 (x+7)???? PLEASE HELPPPPPPPPP

OLga [1]

Desmos helps me with graphing equations I reccomend using them.

7 0

3 years ago

A company has 7 male and 9 female employees, and needs to nominate 2 men and 2 women for the company bowling team. How many diff

lys-0071 [83]

Answer:

The team can be formed in 756 different ways

Step-by-step explanation:

This is a combination problem since we are to select a set of people from a group. Combination has to do with selection.

for example, if r number of object is to be selected from a pool of n objects, this can be done in nCr number of ways.

$nCr = \frac{n!}{(n-r)!r!}$

Now If A company has 7 male and 9 female employees, and needs to nominate 2 men and 2 women for the company bowling team, then this can be done in the following way;

$7C2 * 9C2$

$7C2 = \frac{7!}{5!2!} \\= \frac{7*6*5!}{5!*2} \\= 7*3\\= 21ways\\\\similarly;\\\\9C2 = \frac{9!}{7!2!}\\9C2= \frac{9*8*7!}{7!*2} \\9C2 = 9*4\\9C2 = 36$

7C2 * 9C2 = 21*36

= 756

The team can be formed in 756 different ways

5 0

3 years ago