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2 years ago

12

Pls help simplify

ula1" title="( - 3a {}^{2} ) {}^{3} " alt="( - 3a {}^{2} ) {}^{3} " align="absmiddle" class="latex-formula">

1 answer:

Novosadov [1.4K]2 years ago

3 0

Answer:

$- 27 {a}^{3}$

Step-by-step explanation:

The solution is in the attached file

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Where do they go and explain why you decided to put it there

zhuklara [117]

Answer:

0=3/8

1=1 5/8

2= 4/2

i think?

Step-by-step explanation:

3/8 is less than a whole so it is 0

1 5/8 and 4/2 is 2 if simplified and 1 5/8 is less than 2 so 1 5/8 is 1 and 4/2 is 2

4 0

3 years ago

the ratio of the length to width in a full-size cello is approximately 8 to 3. What is the width of a full-size cello that is 45

Brut [27]

Answer:

w = 16.875 inches

Step-by-step explanation:

Given that the ratio of the length to width in a full-size cello is approximately 8 to 3.

This will be a constant for all cellos

Using the above we can find out length if we know width and vice versa.

Here we know the length = 45 inches

Since $\frac{l}{w} =\frac{8}{3} =\frac{45}{w}$

BY cross multiplication we find that

8w = 3(45)

Or w = 16.875 inches

Verify:

Let us check our answer by comparing with proportion

l/w = 45/16.875 = 8/3

Hence our answer is right

6 0

3 years ago

Read 2 more answers

A random sample of 10 observations was selected from a normal population distribution. The sample mean and sample standard devia

Delvig [45]

Answer:

18.0167≤x≤21.9833

Step-by-step explanation:

Given the following

sample size n = 10

standard deviation s = 3.2

Sample mean = 20

z-score at 95% = 1.96

Confidence Interval = x ± z×s/√n

Confidence Interval = 20 ± 1.96×3.2/√10

Confidence Interval = 20 ± (1.96×3.2/3.16)

Confidence Interval = 20 ± (1.96×1.0119)

Confidence Interval = 20 ± 1.9833

CI = {20-1.9833, 20+1.9833}

CI = {18.0167, 21.9833}

Hence the required confidence interval is 18.0167≤x≤21.9833

8 0

3 years ago

Elimination method<br> 4x-2y=48<br> 2x+6y=-18

yulyashka [42]

$4x-2y=48\\ \\ 2x+6y=-18$

First we'll multiply the second equation by -2

$-2\cdot (2x+6y)=-2\cdot -18\\ \\ -4x-12y=36$

Now let's add the new equation and the first one.

$(4x-2y)+(-4x-12y)=48+36\\ \\ 4x-4x-2y-12y=48+36\\ \\ -14y=84\\ \\ y=\frac { 84 }{ -14 } \\ \\ y=-6$

We found y's value. We'll plug it in one of the equations to find x's value.

$y=-6\\ \\ 4x-2y=48\\ \\ 4x-2\cdot -6=48\\ \\ 4x+12=48\\ \\ 4x=48-12\\ \\ 4x=36\\ \\ x=\frac { 36 }{ 4 } \\ \\ x=9$

Solution ;

(9, -6)

4 0

3 years ago

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6(-2) (-3) PLEASE HELP ASAP!!!!!!!!!!

andrew11 [14]

Answer:

6×6

=36

Step-by-step explanation: Negative multiplied by negative is positive.

8 0

3 years ago

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