Mathematics Middle School

HELPPPP PLS
A fair coin is flipped 20 times. If the coin lands on
heads 13 times, which statement is true?
A. The coin lands on heads 3 less times than
expected.
B. The coin lands on heads 3 more times than
expected.
C. The coin lands on heads 5 less times than
expected.
D. The coin lands on heads 5 more times than
expected.

Answers

Answer 1
B because it’s a 50% chance of getting heads/tails and it landed 13 times out of 20 on heads so 3 more then 50% of 20
Answer 2
b because the coin has a 50% chance to land on heads or tails. Which means if its flipped 20 times it has a 50% chance to land on heads which is 10 times. The coin landed on heads 13 tikes which is 3 more than 10

Related Questions

Helpp PLEASE HELP PLEASE PLEASE PLEASEE!

Answers

Volume = lwh (we are already told the volume, length, and width, so we can rearrange the formula to find height)

l=V/wh
= 270/15(9)
=270/135
=2 m

This means the height of the pool is 2m, hope this helps!! :)

It gets 2m because with the formula lxwxh you can get the amount of the height

Can someone please help me with number 7?

Answers

You start with 480 and you divide that by 4 and it’s 120 and you times by one it’s the same Hope it’s helps!!

will give branliest

write 5(7j + 6 + 3j) into a verbal expression

Answers

50j+30 is the answer

Answer:

16j + 12

Step-by-step explanation:

hanime yes yes help me with math please.

Answers

Answer:

Dealer 2 is more efficient than Dealer 1.

Dealer 2 is the leading brand.

Step-by-step explanation:

Dealer 2 is more efficient

Answer the questions below!

Answers

Answer:

1. 4/8

2. 5/5

3. 4/4

4.4 5/10

5.3 7/11

6.  1 3/4

Step-by-step explanation:

What is the sum of 1 7/10 and 3 3/5? Use the fraction strips to help.

Answers

Answer:

5 3/10

Step-by-step explanation:

5 3/10 In my opinion

What is the fractional equivalent of 1.37?

Answers

Answer:

137/100

Step-by-step explanation:

1.37 ( to fraction)

divide by 100

137/100

You randomly choose one of the tiles. Without replacing the first tile, you randomly choose a second tile. Find the probability of the compound event. Write your answer as a fraction or percent rounded to the nearest tenth.

Answers

i think it's 1/2 or 1/4

Mariluz will be spending her vacation at her uncle's house in the mountains. She drove the 582 kilometers from her home to her uncle's house in 6 hours. At what rate did Mariluz complete her trip? (in kilometers per hour)

Answers

Answer:

She drove 97 kilometers per hour.

Step-by-step explanation:

To solve this question is simple.

First you will want to divide 582 by 6.

This will leave you with 97 which is your answer.

97 kilometers p hour

Three pounds of potatoes make eight equal servings of mashed potatoes. How many pounds of potatoes are in each serving? _______

what two numbers does that lie between? ______
and_____

Answers

Answer:

each serving uses 3/8 pounds of potatoes

the answer is between the whole numbers 0 and 1

Just need the points

Simplify: -7 • 12

Giving brainliest^^

A) -84

B) -74

C) 74

D) 84

Answers

The answer should be A) -84
The answer should be A

Write an equivalent expression to show the relationship of multiplication
and addition.
3x9

Answers

Answer:

9x3=27 or 27=9x3 well its both

Step-by-step explanation:

Answer:

3×9=9+9+9

or

3×9=3+3+3+3+3+3+3+3+3

Blake has a garden in his backyard. He picked 44 tomatoes from 4 tomato plants. What is the ratio of tomato plants to tomatoes picked?
A.
11:1
B.
1:4
C.
1:11
D.
4:1

Answers

Answer:

C

Step-by-step explanation:

For every 1 plant, he picks 11 tomatoes off. So the ratio is 1:11. And since there are 4 plants, and 11 tomatoes are being picked off of each, 4x11 = 44.

Answer:

The answer is C.

Explanation:

MATH QUESTION 8th GRADE help

Answers

Answer:

I think it D. Hope it helps

Answer:

D

Step-by-step explanation:

Ben earns $72 per day and $6 for each delivery he makes. He wants to earn more than $155 in a day. What is the LEAST number of deliveries he must make to reach his goal?

Answers

Answer: the least number of deliveries that Ben must make is 14.

Step-by-step explanation:  Given that Ben earns $9 per hour and $6 for each delivery he makes. He wants to earn more than $155 in an 8-hour workday.

We are to find the least number of deliveries he must make to reach his goal.

Let x be the least number of deliveries that Ben must make to reach his goal.

Then, according to the given information, we have

Thus, the least number of deliveries that Ben must make is 14.

PLEASE HELP! I GIVE BRAINLIEST!! What are the correct values for the missing boxes in the ratio table in number 4 above?
A. 5 points
B. 2 clients and 12 hours
C. 1 client and 24 hours
D. -5 clients and 24 hours
6 clients and 18 hours

Answers

I think is C. 1 client and 24 hours

because

12÷3=4

4÷4=1

6×4=24

ratio

client: hours

1 : 4

Answer:

C

Step-by-step explanation:

It would make them be a ratio.

how do i find text structure?

Answers

Most definitely do not use that link

Answer:Examples of text structures include: sequence/process, description, time order/chronology, proposition/support, compare/contrast, problem/solution, cause/effect, inductive/deductive, and investigation.

The function ƒ(x) = 50 + 73x − 3x^2 gives the value of Eli's stock portfolio in hundreds of dollars after x months. What was the initial value of his portfolio? In how many months will it reach the maximum value?

A. $50; The portfolio will be at its maximum after about 12 months.
B. $50; The portfolio will be at its maximum after about 13 months.
C. $5,000; The portfolio will be at its maximum after about 12 months.
D. $5,000; The portfolio will be at its maximum after about 13 months.

Answers

Answer:

B.$50; The portfolio will be at its maximum after about 13 months

I'm trying to solve for X and X+Y. Please help me!

Answers

Answer:

From 12 o'clock position clockwise:

-12

-1

11

12

Step-by-step explanation:

y = -1 (given).

x + y = 11

Plug in -1 for y in the equation (given):

x + (-1) = 11

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Add 1 to both sides of the equation:

x - 1 (+1) = 11 (+1)

x = 11 + 1

x = 12

x + y = ?

x = 12

y = -1

Plug in the corresponding numbers to the corresponding variables:

12 + (-1) = 12 - 1 = 11

xy = ?

x = 12

y = -1

Plug in the corresponding numbers to the corresponding variables. Note that when you multiply a negative and a positive number, your answer will be negative:

12 * -1 = -12

Since Y is -1, X is 12 because 12+-1= 11. Oh and 12•-1 is -12.

please help! I need this now who ever gets this first will get a brainlest

Answers

Answer:

the cost of 0 caramel bags

Answer:

the cost of zero bags

Step-by-step explanation:

because it's the origin and just starting the graph.

A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 4 had a mispriced item. If 1,400 people go to this store each day, how many people would you expect to have a mispriced item?

Answers

Answer:

112 people

Step-by-step explanation:

[tex]\frac{4}{50}[/tex] = [tex]\frac{x}{1400}[/tex]  write the proportion where x is the number of people with a             missplaced time

50x = 5600  cross multipy

x = 112 divide both sides by 50

x + 2 ≥ 2
solve and show work

Answers

Answer:

X > (whatever the symbol is) 0

Step-by-step explanation:

kinda like algebra:

x + 2 > 2

X >  0

x + 2 >_ 2
1 + 2 >_ 2
1 + 2 is greater than or equal to 2

True or False? A convenience sample is always valid and reliable.

Answers

Answer:

a convenience sample is always valid and reliable  is  true not false

Step-by-step explanation:

BRAINLIEST OF CORRECT !! the side lengths of a triangle are 6, 8, and 12. is this a right angle?

Answers

Answer:

C

Step-by-step explanation:

answer:

C. no, because 6^2 + 8^2 [tex]\neq[/tex] 12^2

step-by-step explanation:

use the pythagorean theorem formula in order to solve thisthe formula: a^2 + b^2 = c^2now plug in the values

a^2 + b^2 = c^2

6 = a8 = b12 = c

6^2 + 8^2 = 12^2

36 + 64 = 144

100 [tex]\neq[/tex] 144

the symbol is "not equal"as you can see they are NOT equal

It took Jess 113 minutes to print her 7 page book report. How long does it take for her printer to print a single page?

Answers

Answer:

16.15

Step-by-step explanation:

thats rounded up

Answer:

16.15

Step-by-step explanation:

what is the area of the figure in square inches

Answers

Answer:

[tex]78in.^{2}[/tex]

Step-by-step explanation:

Area of 2 parallelograms = 2(bh)

                                          = 2(13 x (6 ÷ 2))

                                          = 2(13 x 3)

                                          = 2 x 39

                                          = [tex]78in.^{2}[/tex]

hope this helps, sorry if it is not right

Skylar has sphere-shaped toys for her pool that each have a radius of 2 inches. If the toys fill with water, how many cubic inches of water would it take to fill all 12 toys?

Answers

The correct answer is 401.88 cubic inches of water to fill the toys

Margery is 3 years younger than 2 times Abby’s age. Margery is 33 years old. How old is Abby?
A. 11
B. 13
C. 15
D. 18

Answers

D. 18

33 + 3 = 36
36 / 2 = 18

Answer:

d.18

Step-by-step explanation:

You spin a spinner (labeled 1 – 3) and rolls a standard number cube. What is the probability that you land on a 2 and roll a number greater than 2?

A) 1/9 B) 2/9 C) 2/3 D) 5/6 E) impossible

Answers

I believe the answer is C
The answer should be c

Claire deposited $500 into a savings account that earns 2.5% annual simple interest. If she keeps this amount in the account for 2 years, how much interest will she earn?

Answers

Answer:

Claire will earn $25 in interest after 2 years.

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