Mathematics Middle School

What equation has infinite many solutions?
1. 3(n+7)-6=2n+10+n
2. 3n-3=5(n+2)-2n
3. 2n+3(n-4)+5=5n-7
4. 2n-4=2n-2(n+2)

thank you :))

Answers

Answer 1
3 because
2n+3(n-4)+5=5n-7
2n+3n-12+5=5n-7
5n-7=5n-7
5n-5n=7-7
0

Related Questions

Also this one, please

Answers

1 $3.07
2 3.07+ x = y
3 $55.26

A soap factory randomly inspects 100 bars of soap to better identify problems that occur during the manufacturing process. The table below displays the possible problems and frequency for each.

Soap Problems
Frequency
Underweight
4
Impurities
2
Broken bar
3
None
91
Total
100

If the soap factory makes 5,000 bars of soap per day, how many of those bars would they expect to be broken?
They would expect 100 bars to be broken.
They would expect 150 bars to be broken.
They would expect 300 bars to be broken.
They would expect 450 bars to be broken.

Answers

150 I really hope it helped
150 will be your final answer. Hope this helps :)

find the volume of the cylinder.

Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi.


units^3

3

Answers

Answer:  pie r^2 h

where pie is 3.143... , or 14

r- radius

h- height

Step-by-step explanation:

suppose let the cylinder height =3 and radius =4

volume of cylinder =pie*r^2*H

                                 = 3.143*4^2*3

                                 =150.864 m^3

he figure PQRSTU represents the shape of the parking lot at a shopping mall. What is the area of the parking lot?

A.
834 square feet
B.
918 square feet
C.
984 square feet
D.
1,068 square feet



Yall know this BS

Answers

Answer:

I think is c

Step-by-step explanation:

sorry for annoying you all... I'm just not smart y'know-

Answers

Answer:

7:4

Step-by-step explanation:

7:4

f m

7=female

4=male

Answer:

Answer down below!!

Step-by-step explanation:

Hey, first of all, dont be discouraged! It was tough learning ratios too

Anyway.

If there are 4 male birds for every 7 female birds, your ratio would be

4:7

Or as

4 to 7

Hope this helps!

Help Due at 11:59 TONIGHTTTT

Answers

Answer:

c is number one

and number 2 is e

Step-by-step explanation:

separate them then add

10

[tex]10 + 15 - 13 = 12[/tex]

[tex] - 7 -7 = - 14[/tex]

-14w+12

do the same for number two and you get 18a-8b-1

Answer: C, E, C, E, A

Can Someone PLEASE HELP WITH THIS IXL? PLEASE HELP!! I DONT GET IT. PLEASEE HELP!! THIS IS A 6th GRADE IXL!! PLEASEEE HELP

Answers

< is the correct symbol

3 x 2/4 = 1.5
1.5 is less than 3
so 1.5 < 3

What is 3/5+3/4? Whats the totallt

Answers

Answer:

27/20

(1.35 decimal form)

Step-by-step explanation:

make the common denominator 20, since it is the LCM

12/20+15/20= 27/20

27/20


Decimal form

1.35




Mixed form



1 7/20

Students surveyed boys and girls separately to determine which sport was enjoyed the most. After completing the boy
survey, it was determined that for every 3 boys who enjoyed soccer, 5 boys enjoyed basketball. The girl survey had a
ratio of the number of girls who enjoyed soccer to the number of girls who enjoyed basketball of 7:1. If the same
number of boys and girls were surveyed and 90 boys enjoy soccer, how many girls each sport?



Please help me and show how to solve this the best answer will get brainlesest

Answers

okay, let's go!
1. for the boys, 3 soccer is 5 basketball (in a group of 8 students).
2. for the girls, 7 soccer is 1 basketball (in a group of 8 students)
3. the question mentions 90 boys like soccer, which means we increased the number of boys surveyed 30x, since 3 times 30 is 90. now, we need to increase the girl numbers by 30 as well, giving us 210 girls who like soccer for every 30 who like basketball.

what does "a" equal in this problem? 8= 2^a

Answers

Answer:

3

Step-by-step explanation:

helpppppppppppppppppp

Answers

Brainliest for the person above me, thank you very much.

How much does 22/7 differ from the true value of π?

Answers

Answer:

yess brooooooooo9o9oo

Answer:

0.001267

Step-by-step explanation:

If one knows that π is approximately 3.14159, then it trivially follows that π < 227, which is approximately 3.142857. so they differ by 0.001267

need help with 7, 8, and 9 plz :]

Answers

7 .is 9 to the power of 8,number 8 is 5,number 9 is 5m^2n

Tanya is paid an hourly rate. One week she earned $157.50 by working 30 hours. If she works 35 hours the next week, how much will she earn?

Answers

Answer:

183.75

Step-by-step explanation:

157.50

÷30

=5.25

×35

=183.75

Answer: $183.75

Step-by-step explanation: You divide $150.50 by the number of hours worked, 30 hours, to find the hourly rate. Then, you multiple the hourly rate by 35 hours.  

[tex]$157.50/30 hours = $5.25/hour \\$5.25/hour * 35 hours = $183.75[/tex]

A game has purple and orange pieces. The ratio of purple game pieces to total pieces is 7:16.
Select all the statements about the game pieces that are correct.
A.
The ratio of purple pieces to orange pieces is 9:7.
B.
The ratio of total pieces to orange pieces is 16:9.
C.
The ratio of total pieces to purple pieces is 16:9.
D.
There must be 9 more orange pieces than purple pieces.

Answers

Answer:

D

Step-by-step explanation:

it is true that there are 9 more orange pieces than orange pieces

B and d............yep

READ THIS VERY VERY CAREFULLY.
Please and thank you.

Answers

Answer:

5

Step-by-step explanation:

59.95 ÷ 11.99=5

Ahmad made 4 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all necklaces was $17.60. If the beads cost $1.80 for each necklace, how much did each pendant cost?

Answers

Sorry so sorry I’m being forced

Answer:

9.77, i rounded so this should be right.

Patty's Pavers has determined that a paver measuring 5 inches long has a z-score of +1 and a paver measuring 5.25 inches long has a z-score of +2.

Hi! I need Help!
What is the mean length of the pavers produced at Patty's Pavers?

4.25 inches
5.25 inches
4.75 inches
5.75 inches

Thank you!

Answers

Answer:

4.75

Step-by-step explanation: given x=5 inches Z-score =1 let 'X' be the variable in normal distribution z=+1 when x=5 inches.

The mean length of the pavers produced at Patty's Pavers is 4.75 inches. Thus, the correct option is C.

What is Z-score?

A Z-score helps us to understand how far is the data from the mean. It is a measure of how many times the data is above or below the mean. It is given by the formula,

[tex]Z = \dfrac{X- \mu}{\sigma}[/tex]

Where Z is the Z-score,

X is the data point,

μ is the mean and σ is the standard variable.

The Z-score of +1 is,

(x-μ)/σ = 1

(5-μ)/σ = 1

5 - μ = σ

The Z-score of +2 is,

(5.25-μ)/σ = 2

(5.25 - μ)/σ = 2

5.25 - μ = 2σ

Substitute the value of the 'σ', therefore, standard deviation from the above,

5.25 - μ = 2(5 - μ)

5.25 - μ = 10 - 2μ

5.25 - 10 = -2μ + μ

μ = 4.75

Hence, the mean length of the pavers produced at Patty's Pavers is 4.75 inches. Thus, the correct option is C.

Learn more about Z-score:

https://brainly.com/question/13299273

#SPJ2

HELP! WILL MARK BRAINLIEST IF CORRECT!

Answers

Answer:

battery costs $5, tax is $1.20, and so the total is $26.20

Step-by-step explanation:

Batter cost is $5, tax is $120

4a + 7 =


please help me

Answers

Answer: a = 1.75

Explanation :
4a + 7
Using transposition method we move 4 and change its sign
a = 7 / 4
7 / 4 = 1.75

Therefore,
a = 1.75

The intersection of parallel lines b and c and transversal line d form several special angle relationships, as shown in the image below.



Which pairs of angles are vertical angles? Select all that apply.

2 and 3
5 and 8
7 and 2
4 and 5

Answers

2 and 3
5 and 8
Those are the pairs of vertices angles

Answer:

5 and 8

Step-by-step explanation:

Simplify 6(x + 2) + 7.

6x + 9
6x + 15
6x + 19

Answers

3rd one.

6(x + 2) is simply 6x + 12

Do 12 + 7

You will get 19.

Now put that together.

6x + 19, which is option 3

Hope this helped! :D
it’s 6x + 19
because you do 6(x + 2) u multiply the 6 times the x which is 6x and then 6 x 2 which is 12 so ur equation would be 6x + 12 + 7 so you just add 12 and 7 which is 19

Please help me with this. I will give brainliest.

Answers

Answer:

(X-6, y-3)

Step-by-step explanation:

From C to C’ you have to go three units down which is your Y (negative) and 6 units left which is your X (negative)

I will mark brailiest

Answers

the image doesn’t show up

Answer:

Step-by-step explanation:

3 plz ad me as brainlist

help with 3 short questions

Answers

Sorry I have no idea
1. mortal
2. plague
3. annihilate
4. pioneer

NEEEDDDD HEELPPP PLEASSEEE

Answers

Answer:

7\x

Step-by-step explanation:

3.4 I did it thwbentndnajaona she haja quad

Two questions in one.
Question 1: Josiah ran ⅘ of a mile in 1/10 of an hour. How long will it take Josiah to run 3 ½ miles?

Question 2: You can mow ½ lawns in ⅗ of an hour. How many laws can you mow in 1 ¼ hours? Explain your answer and show your steps/thinking.

Answers

question 1: 4.375/10 of an hour (or 26.25 minutes)

Lilia's car can travel 125 miles
on 5 gallons of gasoline. How
many miles can her car travel on 3 gallons?

Answers

Answer:

75 miles

Step-by-step explanation:

125/5gallons = 25

25*3gallons = 75

125 ÷ 5 gallons = 25
25 × 3 gallons = 75

The answer is 75

15 Points and brainliest if you help me!!!

Write the prime factorization of 363 using exponents.

The prime factorization is_

Answers

Answer:

3 * [tex]11^{2}[/tex]

Step-by-step explanation:

I hope this helps :))

Joe rented a bike from Mike's Bikes for $18 plus $5 per hour. If Joe paid a total of $38, how many hours did he rent the bike?

Answers

Answer:

4 hours

Step-by-step explanation:

38-18=20      20/5=4

Answer:

4

Step-by-step explanation:

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