509
х
Z
45°
529
In the figure, x=
and z=

Answer:

Explanation:

1.) Rewrite √24 = [tex]\sqrt{4*6} = 2\sqrt{6}[/tex]   Rewrite √54 =[tex]\sqrt{9*6}= 3\sqrt{6}[/tex]

Divide both terms by the denominator; √6 cancels. 2-3 = -1

2.) Rewrite as [tex]\frac{3}{2\sqrt{5}}[/tex] ×[tex]\frac{10\sqrt{2}}{3\sqrt{5}}[/tex]  The 3's cancel.  10/2 = 5√2 in the numerator.

√5 × √5 = 5 in the denominator.  The 5's cancel.

That leaves √2 ≈1.4142

3.) Divide the terms in the numerator by the term in the denominator.

√2's cancel.  10π/2 = 5π   8π/2 = 4π  

Subtract and we are left with π = 3.14159

4.) [tex]\pi\sqrt{\frac{5}{3}}\cdot\pi\sqrt{\frac{3}{5}}[/tex]  The square roots are reciprocals. They multiply to 1

We are left with π × π = π² ≈  9.8696

Answer:

It goes...The second one, fourth one, First one, then the third one

Step-by-step explanation:

I took the test a while ago

9514 1404 393

Answer:

  45 or 155

Step-by-step explanation:

At a speed of 11 units per minute, in 5 minutes the bug will run 5×11 = 55 units.

If the bug is running in the positive direction, it will end at location ...

  100 +55 = 155

If the bug is running in the negative direction, it will end at location ...

  100 -55 = 45

At 7:20 pm, the bug will be on the point 45 or 155.

Answer:

yes

Step-by-step explanation:

Answer:

i dont know maybe

Step-by-step explanation:

idc

Answer: 40

Step-by-step explanation: 40*.7 is 28 so that's the answer. How I got the answer was I did 28/.7 to get 40

Hope this helps and brainliest would be appreciated

Answer:

A sample of 385 is needed.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population, which is the square root of the variance, and n is the size of the sample.

Assume the variance is known to be 3.61.

This means that [tex]\sigma = \sqrt{3.61}[/tex]

How large of a sample would be required in order to estimate the mean number of reproductions per hour at the 95% confidence level with an error of at most 0.19 reproductions?

A sample of n is needed.

n is found when [tex]M = 0.19[/tex]. So

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

[tex]0.19 = 1.96\frac{\sqrt{3.61}}{\sqrt{n}}[/tex]

[tex]0.19\sqrt{n} = 1.96\sqrt{3.61}[/tex]

[tex]\sqrt{n} = \frac{1.96\sqrt{3.61}}{0.19}[/tex]

[tex](\sqrt{n})^2 = (\frac{1.96\sqrt{3.61}}{0.19})^2[/tex]

[tex]n = 384.16[/tex]

Rounding up

A sample of 385 is needed.

Answer:

a. ? % of 75 = 5     =     15

b. ? % of 28 = 140 =   500

c.? % of 100 = 40   =   40

d.? % of 200 = 15   =    7.5

Hope it helped...

Have a great day : )

Answer:

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">

 <mrow>

   <mi>w</mi>

 </mrow>

 <mrow>

   <mn>2</mn>

 </mrow>

 <mo>=</mo>

 <mo>&#x2212;</mo>

 <mrow>

   <mn>5</mn>

 </mrow>

 <mfrac>

   <mrow>

     <mi>w</mi>

   </mrow>

   <mrow>

     <mn>4</mn>

   </mrow>

 </mfrac>

 <mo>+</mo>

 <mfrac>

   <mrow>

     <mn>1</mn>

   </mrow>

   <mrow>

     <mn>2</mn>

   </mrow>

 </mfrac>

</math>

Step-by-step explanation:

Answer: 194.194537 centimeters

Step-by-step explanation: Had done it on a piece of paper

Answer:

90.9091 yeah I'm pretty sure

The number 20 is 22% of 90.91.

Percentage is a way of expressing a portion or fraction of a whole as a proportion of 100. It is denoted by the symbol "%". Percentages are commonly used to compare relative values, express ratios, or represent portions of a whole.

To estimate the number that 20 is approximately 22% of, we can set up the equation:

0.22 x = 20

Here, x represents the unknown number we are trying to estimate.

To estimate x, we can divide 20 by 0.22:

x ≈ 20 / 0.22

x ≈ 90.91

Therefore, 20 is 22% of 90.91.

Learn more about Percentage here:

https://brainly.com/question/26535441

#SPJ6

Answer: pink one

Step-by-step explanation:

The convert form of vertex equation y = -3(x+5)² - 4 in standard equation is y = -3x² - 30x - 79.

The standard form of the equation is ax²+bx+c=y and the vertex form of the equation is y= a(x-h)²+k,

Where k is a constant.

The given equation is,

y = -3(x+5)² - 4

To convert this vertex form of equation is standard form,

Simplify,

y = -3(x²+ 25 + 10x) - 4

y = -3x² -75 - 30x - 4

y = -3x² - 30x - 79

The required standard form of equation is y = -3x² - 30x - 79.

To learn more about Vertex form of equation on:

https://brainly.com/question/19173306

#SPJ2

Answer:

30x40=3inx4in    

50x50=5inx5in

40x20=4inx2in

30x40=3inx4in

30x30=3inx3in

35x40=3.5inx4in

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Step-by-step explanation:

9 months

answer:

9 months

step-by-step explanation:

honestly this problem isnt super super complicated as we need to do is use some multiply tables! :)

since we know that

4*3

= 12

and in this problem

1/4

just means

= 3 months

so

3*3

= 9 months

hope this helps you! :)

Answer:

L 2r. x. em -ca tpd apt answer

Answer:

1.  12    

Step-by-step explanation:

Answer:

66

Step-by-step explanation:

hope this help an i  will not ask if anyone a boy or girl.

Answer:

The answer is C, The use of Pi can be used to find the ratio of the diameter and circumference of a circle

Step-by-step explanation:

Answer:

the answer is 8

Answer:

x=2

Step-by-step explanation:

hope this helps i haven't done math like this in forever

Answer:

See attached diagram

We have

Let's find angle x and compare with the safety requirement

The angle we got is less than 75° so it is safe to use

Answer:791.68

Step-by-step explanation:

2*pi*6^2 + 15 *pi * 12 = 791.68

Answer: b for a sorry that’s all I Could understand

Step-by-step explanation:

Answer:

Your answer is A. 525 x cm

Step-by-step explanation:

Answer B:

Step-by-step explanation:

Answer:

p + 30 = 20

Step-by-step explanation:

we can add 30 to both sides to make this an addition equation:

p - 20 = -30 (now add 30 to both sides)

p - 20 + 30 = 0 (then, add 20 to both sides)

p + 30 = 20 (this would be the addition equation)

Answer:

78.5

Step-by-step explanation:

A=2(wl+hl+hw)=2·(4·4.5+2.5·4.5+2.5·4)=78.5