If 10 percent of x is 20 what is 23 percent of x

Answer:

√61

Step-by-step explanation:

using Pythagorean theorem,

h²+b²=hy²

h²+b²=hy²4²+2²=hy²

h²+b²=hy²4²+2²=hy²16+4=20

h²+b²=hy²4²+2²=hy²16+4=20hy²=20

therefore in radical form, Hy=√20

with the same theorem;

h²= hy²-b²

b² is initially given as (√20)²

hy² is given as 9²

h²=9²-(√20)²

h²=81-20

h²=61

h=√61

Using the Central Limit Theorem, considering the higher sample size, the sample of 75 students, with a mean of 22.5, is a better representation.

It states that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard error [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

A higher sample size leads to a smaller standard error, hence the sample of 75 students, with a mean of 22.5, is a better representation.

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Answer:

This is my answer:The second one is better. the entire drama club one was better because the sample is large enough .It also comes from a bigger and more varied group of students thus it is less likely to be biased.

Step-by-step explanation:

Edge test and I got it right :D

Answer:

by technicality, both a and c are correct

Step-by-step explanation:

a) 5.12 x 20 = 102.4

b) 10.95 x 9 = 98.55

c) 11.24 x 9 = 101.16

d) 12.18 x 8 = 97.44

Answer:

Step-by-step explanation:

see attached image

use Pythagorean to solve the other leg of a triangle

b = [tex]\sqrt{12^2 - 10^2}[/tex]

b = [tex]\sqrt{44}[/tex]

b = 6.6 units

Answer:

11.27

Step-by-step explanation:

If I understand you question right...

C = d x π

11.27 π = d x π

divide both sides by π

11.27 = d

Answer:

224mm²

Step-by-step explanation:formula for area of triangle = base x height x 1/2

8x10 = 80     80 / 2 = 40       40 x 4 = 160      area for square =base x height

the pyramid is comprised of four triangles and one square, all we need is to find the individual surface areas of the shapes that compose the pyramid

Answer:

(a) see attached

(b) Surface area = 224 mm²

Step-by-step explanation:

A square based pyramid is made up of a square at the base and 4 congruent triangles as the sides which meet at one point.

Area of a triangle = 1/2 × base × height

⇒ area of one triangle = 1/2 × 8 × 10

                                     = 40 mm²

Area of a square = s² (where s is the side length)

⇒ area of base = 8²

                         = 64 mm²

Total surface area = 4 × area of one triangle + area of the base

                               = 4 × 40 + 64

                               = 224 mm²

Answer:

true

Step-by-step explanation:

The answer to the question is true

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

First you have to translate the words to numbers into an understandable equation like this...

[tex]2x+3x=3(x+5)[/tex]

Now we can solve for x...

[tex]2x+3x=3(x+5)\\2x+3x=3x+15\\5x=3x+15\\2x=15\\x=7.5[/tex]

So the number is 7.5

5/2 is the number if the sum of twice a number and three times a number is triple the quantity of five more than a number then the number.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, The sum of twice a number and three times a number is triple the quantity of five more than a number.

Assuming the number has a unique multiple of x.

∴ 2x + 3x = (3x + 5).

2x = 5.

x = 5/2.

learn more about numerical expression here :

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Answer:

i hope this helps "Elasticity is the ability of a material to return to its original shape after being stretched or compressed. When an elastic material is stretched or compressed, it exerts elastic force. This force increases the more the material is stretched or compressed."

Step-by-step explanation:

Answer:

Your answer is: (a little big) ----> 1175/819

Mixed number form: 1 356/819

Combine the fractions by finding a common denominator.

Step-by-step explanation:

Hope this helped : )

Answer:

1175/819

Step-by-step explanation:

80/91 = 720/819

5/9 = 455/819

720 + 455 = 1175

We will not add the denominators

I hope this helps!

Answer: 174

Step-by-step explanation:

Let's define the notation:

U = units digit

T = tens digit

H = hundreds digit.

Where the number is HTU.

We know that:

T = U + 3

"UTH" - "HTU" = 297.

"TU" = "HTU"/2 - 13.

First, let's wrote this correctly, and make a system of equations:

T = U + 3.

U*100 + T*10 + H - H*100 - T*10 - U = (U - H)*99 = 297.

T*10 + U = (H*100 + T*10 + U)/2 - 13 = H*50 + T*5 + U*0.5 - 13

Then we have the system of equations:

T = U + 3.

(U - H)*99 = 297

T*10 + U = H*50 + T*5 + U*0.5 - 13.

First, we can replace the first equation into the third one, so now we have only two variables.

(U - H)*99 = 297

(U +3)*10 + U = H*50 + (U + 3)*5 + U*0.5 - 13.

Now we can isolate H in the first equation and get:

(U - H) = 297/99

H = -297/99 + U.

Now we can replace it into the other equation:

(U +3)*10 + U = (-297/99 + U)*50 + (U + 3)*5 + U*0.5 - 13.

Now let's solve this for U.

U*10 + 30 + U = U*50 -150 + 5*U + 15 + U*0.5 - 13

11*U + 30 = U*(50  + 5 + 0.5) - 148

30 +148 = U*(55.5 - 11) = U*44.5

U = 178/44.5 = 4.

Then using the previous equations:

T = U + 3 = 4 + 3 = 7

H = -3 + U = -3 + 4 = 1.

Then our number is:

174.

Answer:24 oz at smiths

Step-by-step explanation:

4.40/20 =.22 c per oz

4.80/24=.20 c per oz

Answer:

26 inches.

Step-by-step explanation:

Lilly: 12 x 2 + 2 = 26

Anita: 12

Answer:

this is based around your own learning but do something relatively easy to get it over with quickly. for example, in soccer will score a goal by the end of the season.

Step-by-step explanation:

specific, measurable, attainable, realistic, and timely

Answer:

question 5: 9.6

Step-by-step explanation:

[tex] \frac{ 5.4}{6.3} = \frac{x}{11.2} [/tex]

[tex] \frac{5.4 \times 11.2}{6.3} = 9.6[/tex]

Answer:

4-c/3 is ans

Step-by-step explanation:

3x+c=4

3x=4-c

x=4-c/3

Answer:

1/-9

Step-by-step explanation:

First you need to calculate rise over run with the equation [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex] in this case that would be 6-4 over -8 - 10 this gets you 2/-18. This means the "rise" is 2 and the "run" is -18. This can be simplified to 1/-9.

Answer:

8^2

Step-by-step explanation:

Answer:

The other angle is 100

Step-by-step explanation:

A straight line is 180, and if one angle is 80, then 180-80=100, giving you your answer. ^^

Answer:

i think the answer will be 180-80?

:) Good Luck! You got this, and hope this helps!

Answer:

Not a real thing

Step-by-step explanation:

Answer:

answer in picture

Step-by-step explanation:

Positive correlation = positive association Negative correlation = negative association

Answer:

225π inches²

Step-by-step explanation:

Assuming the pizza to be a circle, its area is calculated below:

[tex]A=\pi r^2\\A=\pi(x+5)^2\\A=\pi(10+5)^2\\A=\pi(15)^2\\A=225\pi[/tex]

Thus, the radius of the pizza is [tex]225\pi[/tex] inches² when x is 10 inches.

Answer:

2*f

Step-by-step explanation:

because all the rest are negative

Answer:

i have no idea if you're looking for how many rides she can go on or the equation so i'll give you both lol.

Step-by-step explanation:

3t + 12 = 40

t represents the number of tickets (rides)

$12 is the entry fee.

$3 is the cost per ticket

to solve, use the subtraction property of equality. (subtract 12 from both sides)

3t + 12 - 12 = 40 - 12

3t = 28

divide each side by 3.

3t/3 = 28/3

28/3 = 9.3333...

amari can go on a maximum of 9 rides ($27) and stay within her budget of $40 or less.

$27 + $12 = $39.

she will have $1 left over.

The inequality in the given situation is 3t+12≤40

Given that, Amari can spend at most $40 at the fair.

Inequalities are mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Now, the cost her $12 to enter the fair and $3 per ticket, t, to ride the rides.

Here, $3 per ticket, t, to ride the rides = 3t

So, the inequality is 3t+12≤40

Therefore, the inequality in the given situation is 3t+12≤40.

To learn more about inequality visit:

https://brainly.com/question/20383699.

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"Your question is incomplete, probably the complete question/missing part is:"

Amari can spend at most $40 at the fair. It cost her $12 to enter the fair and $3 per ticket, t, to ride the rides.

The inequality ___ represents the amount of money Amari has left to purchase tickets after she enters the fair.

Answer:

15 dollars

Step-by-step explanation:

they lost 20 but made 5 back from the "sale"