There are 9 students in a class. The teacher chooses 2 students to go to the library. The order in which they are chosen does not matter.How many ways are there to choose the students?

Answers

Answer 1

Step-by-step explanation:

Number of ways = 9C2 = 9 * 8 / (1 * 2) = 36.

Answer 2

Correct Answer Auto Detected:

36


Related Questions

Hurry please this is worth 25 points

Answers

Answer:

1/8 mile

Step-by-step explanation:

This is a subtraction problem. We need to subtract 5/8 from 3/4. We need a common denominator of 8.

3/4 - 5/8 = 6/8 - 5/8 = 1/8

Answer: 1/8

Answer:

Malika runs 1/8 of a mile more than Andrew

Step-by-step explanation:

The easiest way to figure this out is by converting both of the fractions to have the same denominator. Do not convert them to decimals because the answer might not always turn out to be right.

If we keep Andrew's distance of 5/8 the same we can easily convert Malika's distance of 3/4 to the same denominator by multiplying it by two

[tex]\frac{3}{4} *\frac{2}{2} = \frac{6}{8}[/tex]

Now that the denominators are the same, we are able to subtract the fractions.

[tex]\frac{6}{8} -\frac{5}{8} = \frac{1}{8}[/tex]

Malika runs 1/8 of a mile more than Andrew

(4x+8)+(7x+3) help me!!!!

Answers

Answer:

Step-by-step explanation:

11x+11

40 = 3 x 3 x ? Complete the equation

Answers

Answer:

0.225

hope this helps☺

the closest I got was 3x3x4.44 which is 39.96

Plssssssssssssssssssssssssss

Answers

Answer:

the answer is 192 :))))

If g(m)= m^2-3m+3 find g(-2)

Answers

Answer:

13

Step-by-step explanation:

Substitute -2 for m to get (-2)^2-3(-2)+3=4+6+3=13

4. BOLD all polynomials that are in standard fom.
Help!!! Easy points

Answers

Answer:

b and d

Step-by-step explanation:

on both of those polinomials the terms are in order from the higest degree towards thhe lowest degree

HEWP MEH ;)
Madelyn went shopping for a new video game because of a sale. The store was offering a 20% discount. What number should she multiply the prices on the tags by to find the price she would have to pay, before tax, in one step?

Answers

Answer:

0.2

Step-by-step explanation:

Answer:

0.8

Step-by-step explanation:

100%−20%=80%

80%=0.8

Find two positive angles and two negative angles that are coterminal with the given angle and less than 1080 but greater than 720.

Answers

Answer:

The correct answer is 450°, 810°, -270° and -630°.

Step-by-step explanation:

According to the given scenario, the calculation of the two positive angles and two negative angles i.e. coterminal is as follows:

The coterminal angles are the angles in which the difference could be 360 degrees or the multiples of 360 degrees

For 90 degrees, the two positive angles are

a. 90° + 360°

= 450°

450° + 360°

= 810°

b. The two negative angles are

= 90° - 360°

= -270°

-270° - 360°

= -630°

Can someone help me with this problem please? I'll mark you as brainliest!

Answers

Answer:

put a closed for on -1 and go to the left with an arrow

Below is a photo of the answer if you have anymore questions friend me or comment down below. Hope it helps

extra points :)
please answer asap

Answers

Answer:the answer is C by simlifying 8 to 2 three   to make both powers  base two and subtracting the exponets

Step-by-step explanation:

Question 5(Multiple Choice Worth 4 points)
The legs of a right triangle are 4 units and 7 units. What is the length of the hypotenuse?

Answers

Answer:

the answer is 33

Step-by-step explanation:

Barbara prepared 15 kilograms of dough after working 3 hours. How much dough did Barbara prepare if she worked for 4 hours? Solve using unit rates.

Answers

Answer:

20 kilograms or every hour 5 kilograms of dough.

Step-by-step explanation: Just divide every hour by kilograms of dough.

please help, brainliest 2 whoever gets it right !!!!!!

Answers

AnswerD

Step-by-step explanation:

tom went on a bike rid to the store 3 miles away if tom took 1/2 of an hour to get there and 2/3 of an hour to get back what was his average rate of seed

Answers

Answer:

5.14 mi/h

Step-by-step explanation:

( sorry if wrong )

helppp plzzz ik this might be easy but i’m dying and i just need this one answer :( (will mark brainliest)



Sara had 179 dollars to spend on 6 books. After buying them she had 17 dollars. How much did each book cost?

Answers

Answer:

they cost 27 dollars each

Step-by-step explanation:

because 179 divided by 10 is 17.9

Nick has a box of ornaments that he uses to decorate his tree each year All of them are blue, except for six. All of them are green, except for six. All of them are red, except for six. How many of each colored ornament does Nick have?​

Answers

Answer:

3 ornaments of each color

Step-by-step explanation:

There are 3 colors.

For each of the colors, the other two colors have 6 ornaments, hence we can determine that there are 3 ornaments of each color.

Consumers Energy states that the average electric bill across the state is $67.16. You want to test the claim that the average bill amount is greater than $67.16. The hypotheses for this situation are Null Hypothesis: μ ≤ 67.16, Alternative Hypothesis: μ > 67.16. If the true statewide average bill is $51.28 and the null hypothesis is not rejected, did a type I, type II, or no error occur?

a. Type I Error has occured.
b. No error has occured.
c. We do not know the degrees of freedom, so we cannot determine if an error has occured.
d. Type II Error has occured
e. We do not know the p-value, so we cannot determine if an error has occured.

Answers

Answer:

B: No error has occured

Step-by-step explanation:

In statistical hypothesis testing, we have two types of errors namely Type I error and Type II error.

Type I error occurs when we reject the null hypothesis although it is true. Meanwhile, Type II error occurs when we fail to reject the null hypothesis null hypothesis even though it is false.

Now, we are given the null and alternative hypothesis as;

Null Hypothesis: μ ≤ 67.16

Alternative Hypothesis: μ > 67.16.

Where μ represents the statewide average bill.

We are also given the true statewide average bill is $51.28.

Now, the true statewide average bill falls within the range of the null hypothesis given.

Thus, we can't reject the null hypothesis since it is true.

Now, we are told the null hypothesis is not rejected and that is correct.

Thus, there is no error as it doesn't fall into the type I or the type II error.

The Wright family and the James family each used their sprinklers last summer. The water output rate for the Wright family's sprinkler was 40 L per hour. The
water output rate for the James family's sprinkler was 20 L per hour. The families used their sprinklers for a combined total of 50 hours, resulting in a total
water output of 1300 L. How long was each sprinkler used?

Answers

Answer:

3.5 hrs

Step-by-step explanation:

CAN SOMEONE PLEASE HELP ME ITS URGENT DUE TODAYYY

Answers

Answer:

45%

Step-by-step explanation:

Out of 120 problems, 54 were right

54/120

54/120=0.45=45%

45%

Good luck on the rest of your homework! :)

Give the standard form for 900,000 + 50,000 + 9,000 + 600 +20+7

Answers

The standard form of the given expanded form is 959627.

What is the standard form of a number?

The standard form means the process of writing very large expanded form of a number into small form or small number.

The given expanded form is 900,000 + 50,000 + 9,000 + 600 +20+7

= 959627

Therefore, the standard form of the given expanded form is 959627.

To learn more about the standard form of a number visit:

https://brainly.com/question/13139379.

#SPJ2

Charlie has some candy. He shares ten pieces with Betsy and is left with 24 pieces.
Which equation represents how many pieces of candy did Charlie originally have?

1 : x + 10 = 24
2 : x - 10 = 24
3 : x + 24 = 10
4 : x - 24 = 10

Answers

Answer:

2. x-10=24

Step-by-step explanation:

x is the unknown amount of candy that Charlie has.

He gives ten away (-10).

Now he has 24 pieces.

x-10 = 24

help with this, least to greatest again
please

Answers

Answer:

-0.25, -0.15, -0.6

Step-by-step explanation:

- 1/4= -0.25.

Bigger number with negative = smaller number

Mr Anderson has four recipes of granola which recipe has the greatest ratio of Honey to oats
A. Recipe 1
B. Recipe 2
C. Recipe 3
D. Recipe 4

Answers

Answer:

Recipe 3 has the greatest honey to oats ratio amongst the 4 recipes.

Please help!!!
(5 points)

Answers

Answer:

the answer is x = -9

Answer:

the answer is -9, I hope this helps :)

Step-by-step explanation:

There is one pizza and two people are gonna spilt it in half. How would you convert one half into a fraction, decimal and percent?


Please help :)

Answers

Answer:

fraction - 1/2 decimal - 0.5 percent - 50%

Step-by-step explanation:

Heyyy guysss i need to someone to ask my math questions pleasee help

Answers

What is IT? The question?

Sandra exercised 2/3 hour everyday for 2 weeks while she was on vacation. How many hours did Sandra exercise during her vacation?

Answers

the answer is 9.33 hours

I WILL BE MARKING BRAINLIEST TO THE ANSWER WITH AN EXPLANATION ON THE ANSWER (picture attached) ^

Answers

Answer:

the answer is 3 1/5 because you add and multiply and divide

Step-by-step explanation:

Answer:

8/7

Step-by-step explanation:

first set = 5/7

second set = 3/7

3/7+5/7=8/7

Whoever answers this God Bless You!!!

Answers

Answer:

Plz as i have exams

Step-by-step explanation:

Oh Almighty save me

What is 27.5% 0f 275 ??????????????????

Answers

i’m pretty sure it’s 75.65%
I think the answer to the question is 75.625
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