Find the area of the circle use 3.14 for pie

Find The Area Of The Circle Use 3.14 For Pie

Answers

Answer 1

Answer:

50.24 cm²

Step-by-step explanation:

a = πr^2

r = d/2 = 8/2 = 4

a = 3.14(4²)

a = 3.14 * 16

a = 50.24 cm²


Related Questions

Find the length of the missing side

Answers

Answer:

it should be 40 in.

Step-by-step explanation:

because you have to use pythagorean theorem which is A square plus B square equals C square

Hope it helps.

what is 2+1 this will get you points.

Answers

Answer:

╭━━━╮

┃╭━╮┃

╰╯╭╯┃

╭╮╰╮┃

┃╰━╯┃

╰━━━╯

Step-by-step explanation:

lemme explain, im a middle schooler and my school just jumped into this with no explanation.​

Answers

Answer:

the first question is c

Step-by-step explanation:

2 x pi x the radius

2 x 3.14 x 8

What is 1 4/7 + 1/8 ?

Answers

Answer:

[tex]\frac{95}{56}[/tex] or [tex]1\frac{39}{56}[/tex]

Step-by-step explanation:

hope this helps have a good day :)

Answer:

Decimal Answer: 1.7

Fraction Answer: 1 39/56

I NEED HELP WITH THIS

Answers

Answer:

You can call me at the entertainment industry and I said I would like to troll sistah I am bear with me and I said I would like to troll sistah I am bear with me and I said I would like to troll sistah I am bear with me

help me plsi have 7 mins to complete this test

Answers

Answer:

Step-by-step explanation:

the second one

It takes 2 minutes to fill a tank with 16 gallons of gasoline.

Answers

Answer:

and the question is...

Step-by-step explanation:

If the rate , in gallons per minute , continues , approximately how many gallons of water from the hose in 45 minutes ?


Please do help

Answers

Every 5 minutes, you gain 4 gallons. 45/5 = 9, 9x4 equals 36, there would be 36 gallons of water in 45 minutes

Find the LcM of 160, 192,240​

Answers

Given:

The numbers are 160, 192, 240​.

To find:

The LCM of 160, 192, 240.

Solution:

The given numbers are  160, 192, 240​. Write the factor forms of these numbers.

[tex]160=2\times 2\times 2\times 2\times 2\times 5[/tex]

[tex]160=2^5\times 5[/tex]

[tex]192=2\times 2\times 2\times 2\times 2\times 2\times 3[/tex]

[tex]192=2^6\times 3[/tex]

[tex]240=2\times 2\times 2\times 2\times 3\times 5[/tex]

[tex]240=2^4\times 3\times 5[/tex]

Now, the LCM of given numbers is the product of all prime factors with highest degrees.

[tex]LCM=2^6\times 3\times 5[/tex]

[tex]LCM=64\times 15[/tex]

[tex]LCM=960[/tex]

Therefore, the LCM of given numbers is 960.

Theodore says there are 2 weeks 5 days left in the year. How many days are left in the year?​

Answers

Answer:

19 days

Step-by-step explanation:

2 weeks = 14 days + additional 5 days = 19 days

Answer:

346

Step-by-step explanation:

im so confused someone help please x

Answers

Answer:

a) 32 , 40000 b) to a rising in age correspond a rising in salary ,  c) because you can draw a curve(or a brach of hyperbola) that goes up. i guess(?)

Step-by-step explanation:

764 divided by 23 =

A. 33
B. 37 R13
C. 741
D. 33 R5

Answers

Answer:

the answer is 33

Step-by-step explanation: Trust me don't worry :)

Answer this question please ASAP!!!

Answers

Answer:

B.34

Step-by-step explanation:

i did the math and I sure it's correct but if it's not am sorry

what is the measure of NEED HELP ASAP!

Answers

Answer:

of what

Step-by-step explanation:

which of the following rectangle or prism‘s have a surface area of 24 square units

Answers

Answer:

YOU need to add a photo

which of the following expressions would solve for angle A?

Answers

Answer:

D

Step-by-step explanation:

The answer is the side opposite /  hypotenuse.

Definitions

The side opposite is the side which is not connected directly with angle (A). So it is the line that is 24 units long.

The hypotenuse is the longest line of a right triangle. It is opposite the right angle. It is 30 in this case.

Answer

Sin-1(24)/30

You haven't got an answer that is correct.

Tan-1(24/18) would work

The answer that is given that will work is cos-1(18/30)

What number is the opposite of 659? Enter your answer in the box below.

Answers

Answer:

Additive opposite = - 659

Multiplicative opposite = [tex]\frac{1}{659}[/tex]

PLEASE HELP!!

Which statement correctly describes the lines shown on the graph?

A) All three lines represent a proportional relationship.

B) None of the lines represent a proportional relationship.

C) Only the yellow line represents a proportional relationship.

D) Only the green and pink lines represent a proportional relationship.

Answers

Answer:

d

Step-by-step explanation:

The National Collegiate Athletic Association (NCAA) requires colleges to report the graduation rates of their athletes. At one large university, 91% of all students who started their studies in 2000-2010 graduated within 6 years. A sports reporter contacted 152 athletes randomly sampled from that same university and time period and found that 132 of them had graduated within 6 years.
(a) (5 points) Perform the appropriate hypothesis test to determine whether this is significant evidence that the percentage of athletes who graduate is less than for the student population at large, using the significance level a = 0.05. Remember for state the null and alternative hypotheses, the decision rule, and your conclusion.
(b) (3 points) Calculate the P-value for this test. Explain how this P-value can be use to test the hypotheses in part (a).

Answers

Answer:

a)

The null hypothesis is [tex]H_0: p = 0.91[/tex].

The alternate hypothesis is [tex]H_1: p < 0.91[/tex].

The decision rule is: accept the null hypothesis for [tex]z > -1.645[/tex], reject the null hypothesis for [tex]z < -1.645[/tex].

Since [tex]z = -1.79 < -1.645[/tex], we reject the null hypothesis and accept the alternate hypothesis that that percentage of athletes who graduate is less than for the student population at large.

b)

The p-value for this test is 0.0367. Since this p-value is less than the significance level of [tex]\alpha = 0.05[/tex], we reject the null hypothesis and accept the alternate hypothesis that that percentage of athletes who graduate is less than for the student population at large.

Step-by-step explanation:

Question a:

Perform the appropriate hypothesis test to determine whether this is significant evidence that the percentage of athletes who graduate is less than for the student population at large:

At the null hypothesis, we test if the proportion is the same as the student population, of 91%. Thus:

[tex]H_0: p = 0.91[/tex]

At the alternate hypothesis, we test that the proportion for athletes is less than 91%, that is:

[tex]H_1: p < 0.91[/tex]

The test statistic is:

[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.

Test if the proportion is less at the 0.05 level:

The critical value is z with a p-value of 0.05, that is, z = -1.645. Thus, the decision rule is: accept the null hypothesis for [tex]z > -1.645[/tex], reject the null hypothesis for [tex]z < -1.645[/tex].

0.91 is tested at the null hypothesis:

This means that [tex]\mu = 0.91, \sigma = \sqrt{0.91*0.09}[/tex]

A sports reporter contacted 152 athletes randomly sampled from that same university and time period and found that 132 of them had graduated within 6 years.

This means that [tex]n = 152, X = \frac{132}{152} = 0.8684[/tex]

Value of the test statistic:

[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

[tex]z = \frac{0.8684 - 0.91}{\frac{\sqrt{0.91*0.09}}{\sqrt{152}}}[/tex]

[tex]z = -1.79[/tex]

Since [tex]z = -1.79 < -1.645[/tex], we reject the null hypothesis and accept the alternate hypothesis that that percentage of athletes who graduate is less than for the student population at large.

(b) (3 points) Calculate the P-value for this test. Explain how this P-value can be use to test the hypotheses in part (a).

The p-value of the test is the probability of finding a sample proportion of 0.8684 or below. This is the p-value of z = -1.79.

Looking a the z-table, z = -1.79 has a p-value of 0.0367.

The p-value for this test is 0.0367. Since this p-value is less than the significance level of [tex]\alpha = 0.05[/tex], we reject the null hypothesis and accept the alternate hypothesis that that percentage of athletes who graduate is less than for the student population at large.

TS is a midsegment of GHI, solve the value of x

Answers

Answer:

2x-7=(x+10)/2

2(2x-7)=x+10

4x-14=x+10

4x-x=10+14

3x=24

x=24/3

x=8

Step-by-step explanation:

Answer:

x = 8

Step-by-step explanation:

The midsegment is half of GI , that is

2x - 7 = [tex]\frac{1}{2}[/tex] (x + 10) ← multiply both sides by 2 to clear the fraction

4x - 14 = x + 10 ( subtract x from both sides )

3x - 14 = 10 ( add 14 to both sides )

3x = 24 ( divide both sides by 3 )

x = 8

HELP order to find the percentage of households in a town that own more than one vehicle, a survey asks 1000 randomly selected drivers at a
as station how many vehicles are owned in their household. From the results of the survey, it is reported that 67% of households in the town
mave more than one vehicle,
Why is this report biased?
O A. A random sample was used.
O B. The sample size was too small.
C. A survey should not have been used.
D. Households without a vehicle were not surveyed.

Answers

Answer is D jjkkkkmmm

Find the midpoint of the segment with the following endpoints

(-8, 9) and (0, 1)

Answers

Answer:

(-4,5)

x-midpoint -4

y-midpoint 5

Step-by-step explanation:

M=x1+x2/2 ,y1+y2/2

M=-8+0/2 , 9+1/2

M=-8/2,10/2

M=-4,5

x-midpoint -4

y-midpoint 5

Need help please stressing out over this problem!?!?!

Answers

[tex]v = \frac{4}{3} \times \pi \times {r}^{3} [/tex]

Finding the radius,

[tex]d = 2r, \: r = \frac{d}{2} = \frac{8}{2} = 4inches[/tex]

Plugging in our values,

[tex]v = \frac{4}{3} \times 3.14 \times {4}^{3} = \frac{4}{3} \times 3.14 \times 64 = 267.95 {inches}^{3} \\ [/tex]

Rounding to the nearest whol number,

[tex]v = 268 {inches}^{3} [/tex]

20 ounce sodas cost 4 for $5. How much does each soda cost?

Answers

I think 1.99?
I have no idea but I think it’s that

Which expressions are equivalent to the given expression. Help me out please

Answers

Answer:

.............. .......

Maria pulls colored marbles out of a bag one at a time. Her results are shown in the table below.

Color Outcomes
Blue 36
Yellow 42
Black 18
White 24

Based on the outcomes, if 20 more marbles are pulled out of the bag and replaced, how many marbles can be expected to be white?

Answers

Answer:

4

Step-by-step explanation:

P(white) = 24/120

set up a proportion based on these results:

24/120 = x/20

cross-multiply:

120x = 480

x = 4

Question 6
2 pts
Charlotte invested $100 per year into a business for 3 years. The total value of her
investment after 3 years is represented by the algebraic expression below, where x is the
growth in value each year.
100 (x3 + x2 + x)
What is the total value of her investment when x = 2?
O $6400
O $1200
O $600
O $1400

Answers

1200, (2)3+(2)2+2 = 6+4+2 = 12 12(100)= 1200

Jasmine decides to solve this system of equations using the substitution method.
3x + y = 18
4x + 2y = 10
These are the first two steps of the method that Jasmine will use.
Step 1: Solve for y in the first equation.
Step 2: Substitute the result from Step 1 into the second equation.
Which equation should be solved in Step 3 using Jasmine's method?
O A 4x + 18 + 3x = 10
B. 4x + 18 - 3x = 10
C. 4x + 36 - 3x = 10
D. 4x + 36 + 6x = 10
E 4x + 36 - 6x = 10

Answers

Answer:

Make x the same in both so

12x+ 4y=72

12x+6y=30

Now the 12x cancel eachother out so

Difference between 6y and 4y is 2y

Difference between 30 and 72 is -42

2y must equal -42

Y = -21

Substitute -21 into the equation

X = 13

Mark brainliest pls

A study on how circus ticket pricing influences ticket sales shows that there is an average increase of 4 people for every $3 decrease on the price
of the ticket. A circus owner sells an average of 340 tickets when the price of a ticket is $75. If x represents the number of times the price
decreases by $3, which function describes the revenue earned by the circus owner terms of x?

Answers

Answer:

circus ticket pricing influences ticket sales shows that there is an average increase of 4 people for every $3 decrease on the price

of the ticket. A circus owner sells an average of 340 tickets when the price of a ticket is $75. If x represents the number of times the price

decreases by $3, which function describes the revenue earned by the circus owner terms


A funnel is in the shape of a cone. The radius is 2 inches and the height is 4.6 inches. Find the volume of the funnel. Round to the nearest tenth
Volume. In3

Answers

Answer is 19.27 inches^2


The formula for the volume of a cone is:
1/3 x pi x radius^2 x height

Substitute in the values:
1/3 x pi x 2^2 x 4.6

Volume = 19.268

*rounded to a tenth is = 19.27 inches^2
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