can someone help me with these math problems

Answer:

1) equation: 3n-2=n+10. solution: n=6

2) equation: 8n-20=n+15

For each diagram, decide if y is an increase or a decrease of x. Then determine the percentage.

A teacher surveys a sample of students from Lake Middle School. He asks the students where they’d like to go for a field trip. He records these results:

80 choose the aquarium.
60 choose the science center.
30 choose the planetarium.
40 choose the farm.
The teacher wants to figure out the relative frequency of a student choosing the aquarium. He will then estimate how many students out of all 1000 at the school are likely to choose the aquarium.
4) Write and solve a proportion that the teacher can use to estimate how many students in the whole school would choose the aquarium. Show your work.

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.

Which is the independant variable and which is the dependant variable?

For every cupcake, c, that she sells, she raises money, m, for her club.

Plz help me and explain too thanks

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

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.

A band expects to put 12 songs on their next CD. The band writes and records 25​% more songs than they expect to put on the CD. During the editing​ process, ​20% of the songs are removed. How many songs will there be on the final​ CD?

(repost) Help Please I will Give brainliest If Correct!!

15 Points and brainliest if you help me!!!

Write the prime factorization of 363 using exponents.

The prime factorization is_

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

A rectangular prism has a length of 8 inches and a width of 6 inches. The lateral area is 84 square inches. What is the height of the prism?

What is the height of the prism??

A trapezoid has a height of 10 feet, and base measurements of 20 feet and 8 feet. What is the area?

The answer must be in square feet

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

juan says that the probability of picking two white marbles without replacing from a bag containing 3 solid white marbles and 5 striped marbles is equal to 1/64 is juan correct explain.
A-juan is correct the probability of drawing any marble is 1/8 and 1/8 ×1/8=1/64
B-juan is incorrect the probability of drawing a white marble is 3/8 and 3/8×3/8=9/64
C-juan is incorrect since one of the marbles is taken after the first draw 3/8×2/8=6/64=3/32
D-juan is incorrect the marble draw are not independent events.removing one marble affects probability for the next draw because the number of marbles in the sack decreases.

I will mark brailiest

1. Which is the better buy? Which one gives you a lower price per pound (lb.)?


3 1/3 lb. of turkey for $10.50

2 1/2 lb. of turkey for $6.25

what is the nearest whole percent of 31?

Mrs. Cerruti uses 7.7 gallons to drive 245 miles. How far could she drive with 10.3 gallons?

please help me with these two questions, i will give brainliest

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.

George is putting trim around his rectangular deck, including the gate. He will need 46 feet of trim to do the entire deck. If the deck is 15 feet long, how wide is the deck?
A.
6 feet
B.
16 feet
C.
8 feet
D.
23 feet

help with 3 short questions

Find the perimeter.

32 in.
24 in.
36 in.
28 in.

Find the area.

48 in. 2
64 in. 2
84 in. 2
36 in. 2

The patio at the back of the house is to be extended into the backyard in a semi-circle. What will be the area of the yard after the patio is done?

927 square ft.
456 square ft.
613 square ft.
314 square ft.

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?

a 5-lb bag of oranges costs 3.80. there are 3 oranges to a pound. how much does a dozen oranges cost?

Ms. Gartland bought x number of shirts for the new members of her chorus. The cost for x number of shirts, including $3.99 shipping, was $77.49. Each shirt cost $12.25. There was no sales tax on this purchase. Which equation could be used to find x?

A) 3.99(x + 12.25) = 77.49
B) 3.99x + 12.25 = 77.49
C) 12.25(x + 3.99) = 77.49
D) 12.25x + 3.99 = 77.49

PLEASE HELP I WILL GIVE YOU BRAINLIEST

Just help me x.x
And pls explain how you got the answer .-.

4a + 7 =


please help me