MATHEMATICS MIDDLE SCHOOL

A map has a scale of 1 inch: 4 miles.A. You measure 3 inches between your house and the movie theater. How many miles is it from your house to the movie theater?

B. It is 17 miles to the mall. How many inches is that on the map?

Answers

Answer 1
Answer: A.
so 1in:4miles
3in:3 times 4 or 12 miles

B. so 17
1in:4
2in:8
3in:12
4in:16
5in:18
so 4.5in:17
Answer 2
Answer: A. 12 miles because you multiply 4 and 3. B. 4 1/4

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Students sold 300 tickets for a playoff game in basketball at school. Some tickets are for students and cost $4.00, while the rest are adult tickets that cost $10.00. The total value of all tickets sold was $1950.00.Question 2 (1 point) Question 2 Unsaved Write a system of equations that one could use to solve this word problem. Question 2 options: a) {4x+10y=1950x+y=300 4x+10y=1950x+y=300 {"version":"1.1","math":"4x+10y=1950x+y=300"} b) {4x=30010y=1950 4x=30010y=1950 {"version":"1.1","math":"4x=30010y=1950"} c) {4x+10y=300x+y=1950 4x+10y=300x+y=1950 {"version":"1.1","math":"4x+10y=300x+y=1950"} d) {x+y=300x+y=1950 x+y=300x+y=1950 {"version":"1.1","math":"x+y=300x+y=1950"}
The volume of a cylinder, found using 3.14 to approximate pi, is 50,240 cm3. The radius of the cylinder is 40 cm.What is the height of the cylinder? Express your answer as a whole number.

How do I do this problem?

Answers

Answer:

Kate finished the race in 52 seconds

Alexia finished the race in 58 seconds

Trina finished the race in 49 seconds

Step-by-step explanation:

From this work problem we can set up these series of equations:

k+a+t=159\na=k+6\nt=k-3

First we need to create only one variable in the first equation in order to solve it, so we can substitute in the other equations into the first one. That would look like this

k+(k+6)+(k-3)=159

Then we can simplify this

3k +3=159\n3k=156\nk=52

Now that we solve for Kate's time, we can use the other 2 equations to find the times of Alexia and Trina

Using the equation for Alexia's time and plugging in Kate's time gives us

a=52+6\na=58

Using the equation for Trina's time and plugging in Kate's time give us

t=52-3\nt=49

PLEASE HELP! Answer quickly for points!! There are 5 times as many tomato plants as there are cucumber plants. The number of pepper plants is 7 more than the sum as tomato and cucumber plants. There are 19 pepper plants in the garden. How many tomato plants are there. How many cucumber plants are there?

Answers

let x= cucumber plants
5x= tomato plants
6x+7= pepper plants
peppers = 19 
therefore
6x+7=19
subtract 7 from both sides
6x= 12
 divide both sides by 6
x=2
replace the x with 2

2= cucumber plants
10= tomato plants

hope this helps

Solve the system of equations.{y=x−6
{3x+2y=8

Use the substitution method.

Answers

the answer is y=-2 and x=4 ,,, tell me if you need the work

Add −8/15+4/15.

A. 4/15

B. 4/5

C. −12/15

D. −4/15

Answers

Answer:

d. -4/15

Step-by-step explanation:

since the denominators are the same, all u have to do is add -8 and 4

-8+4=-4

then plug in the denominator and it would be -4/15. this is the final answer because it also cannot be simplified further
D. -4/15
Also you can use calculator soup for fractions that’s what I use

How do you do this solve 5/2y=10 for y explain

Answers

if\ (5)/(2)y=10\ \ \ \ \ |divide\ both\ sides\ by\ (5)/(2)\ (multiply\ by\ (2)/(5))\n\ny=(\not10^2)/(1)\cdot(2)/(\not5_1)\n\n\boxed{y=4}\n===============================\nif\ (5)/(2y)=10\n\n(5)/(2y)=(10)/(1)\ \ \ \ |cross\ multiply\n\n2y\cdot10=5\cdot1\n\n20y=5\ \ \ \ \ |divide\ both\ sides\ by\ 20\n\ny=(5)/(20)\n\n\boxed{y=(1)/(4)}
5/2Y pretty much = 2 1/2 y = 10So all you do is divide both sides by 2 1/2Which leaves Y = 4Also you can say if you still don't understand it, what times itself 2 times and plus half itself = 10 you can say 4Ex: 4 + 4 + (1/2 of 4=2)10 so it's 4

A CD store sold 3,467 CD's in 7 days. About the same number of CD's were sold each day. About how many CD's did the store sell each day

Answers

The answer is found by dividing 3,467 CD's by the 7 days. So your answer would be about 495 CD's were sold each day.
I am not sure if this is correct but I think the music store sold about 500 CD's each day
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