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3 years ago

Which could be the first step in simplifying this expression? Check all that apply.

Mathematics

2 answers:

Masja [62]3 years ago

5 0

Answer:

I think that the answers are B and D.

Step-by-step explanation:

(x^-3)^2

x^6 x^-12

I'm so sorry if it's wrong.

alexgriva [62]3 years ago

3 0

Answer:

The answer is C, D, E

Step-by-step explanation:

ON EDGE 2021

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What is the perimeter of rectangle ABCD on the coordinate plane? coordinate grid

vodomira [7]

Drat it all I am so bad at reading. Sorry about that it is my fault :O

6 0

3 years ago

Read 2 more answers

Find the missing dimension of the prism. Round your answer to the nearest hundredth.

Nitella [24]

Answer:

$x = 6.99in$

Step-by-step explanation:

Given

$l =2in$

$Volume = 72.66in^3$

See attachment for prism

Required

Find x

The prism has a regular hexagon base

The base area is calculated as:

$Base\ Area= \frac{3\sqrt 3}{2}l^2$

This gives:

$Base\ Area= \frac{3\sqrt 3}{2} * 2^2$

$Base\ Area= \frac{3\sqrt 3}{2} * 4$

$Base\ Area= 3\sqrt 3 * 2$

$Base\ Area= 6\sqrt 3$

Side x represents the height.

So, we have:

$Volume = Base\ Area*x$

Make x the subject

$x = \frac{Volume }{ Base\ Area}$

$x = \frac{72.66in^3}{6\sqrt 3 in^2}$

$x = \frac{72.66}{6\sqrt 3}in$

$x = \frac{12.11}{\sqrt 3}in$

$x = 6.99in$ --- approximated

6 0

3 years ago

In a pot of chilli, there are 3 parts of beans to every 4 parts of ground beef if a total of 21 combined parts we're used to mak

serg [7]

Answer:

9 parts of beans and 12 parts of ground beef is in the chilli.

Step-by-step explanation:

Given:

In a pot of chilli, there are 3 parts of beans to every 4 parts of ground beef.

If a total of 21 combined parts we're used to make.

Now, to find each ingredients is in the chilli.

As, given there are 3 parts of beans to every 4 parts of ground beef.

Let the beans be $3x.$

And the ground beef be $4x.$

Total combined parts = 21.

Now, to get the each ingredients we solve an equation:

$3x+4x=21$

$7x=21$

Dividing both sides by 7 we get:

$x=3.$

The beans = $3x=3\times 3=9.$

The ground beef = $4x=4\times 3=12$ .

Therefore, 9 parts of beans and 12 parts of ground beef is in the chilli.

8 0

4 years ago

The Wanting Recognition (WR) Scale provides a quantitative measure of a person's level of need for approval and sensitivity to s

levacccp [35]

Answer:

99% of the confidence level of the mean WR score for all convicted drug dealers

(37.4544, 40.5456)

Step-by-step explanation:

Step(i):-

Given that the sample size 'n' = 100

Given that the mean of the sample(x⁻) = 39

Given a standard deviation of the sample (σ) = 6

Level of significance = 0.01 or 99%

Step(ii):-

99% of the confidence level of the mean WR score for all convicted drug dealers

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } ,x^{-} + Z_{0.01} \frac{S.D}{\sqrt{n} })$

$(39 -2.576 \frac{6}{\sqrt{100} } ,39 + 2.576 \frac{6}{\sqrt{100} })$

(39 - 1.5456 , 39+1.5456)

(37.4544, 40.5456)

Final answer:-

99% of the confidence level of the mean WR score for all convicted drug dealers

(37.4544, 40.5456)

8 0

3 years ago

I need this done A.S.A.P please help me

dolphi86 [110]

Answer:

Look at the pics

Step-by-step explanation:

Hey, so when I was solving this I accidentally numbered the exercises differently than in your pic....

I just went from the left row to the right (and missed two...)

Hope it doesn't confuse you :]

If you have any questions about the way I solved it, don't hesitate to ask me =)

8 0

3 years ago