Mathematics High School

1. What would be the first step to solve for y in the equation below?
5x + 3y = 20
a subtract 5x to both sides
b divide 5 to both sides
c add 5x to both sides
d divide 3 to both sides

Answers

Answer 1

Answer:

a. subtract 5x to both sides

Step-by-step explanation:

In order to solve for a variable, you have to isolate it. Since, we are solving for y, the first thing we need to do is put 3y alone on one side of the equation.

Because 5x is being added to 3y, we can undo this by subtracting 5x from both sides.

Answer 2
First step would be a

Related Questions

Three times the difference of a number and 5 is the same as twice the number, decreased by 3. Find the number

Answers

Answer:

x = 12

Step-by-step explanation:

3 (x-5) = 2x - 3

3x -15 = 2x - 3

x-15 = -3

x = 12

check:

21 = 21

The number as decribed (Three times the difference of a number and 5 is the same as twice the number, decreased by 3) in the question is; 12

According to the question;

Three times the difference of a number and 5 is the same as twice the number, decreased by 3.

The word problem can be written and solved as follows;

3(x - 5) = 2x -3

3x -15 = 2x -3

3x -2x = 15 -3

x = 12

Read more:

https://brainly.com/question/1640242

A house costs $18,000, which is 9/10 the cost of a car. A motorcycle costs 1/5 the cost of the car, or 4/5 the cost of 100 cards. How much is the cost of 30 cards?
PLZ PLZ PLZ PLZ PLZ HELP!!!!!!!!!!!!!

Answers

$6750
The ratio of the cards is 4:5, or 18000:22500
22500/100 is 225
225 times 30 is 6750

Simplify 2(-3x-6 help please

Answers

Answer:

-6x-12

Step-by-step explanation:

Answer:

2(-3x - 6).. right?

so the answer is  -6x - 12

hope this helps!!

Rita goes for a bike ride on a trail by her house. After 15 minutes of riding she sees a mile marker. When she reaches the third mile marker, she realizes that she has been biking for 30 minutes. What is the rate at which she is riding?

Answers

Given:

Rita covered 1 mile in 15 minutes.

She covered 3 miles in 30 minutes.

To find:

The rate at which she is riding.

Solution:

Let y be the number of miles covered in x minutes.

Rita covered 1 mile in 15 minutes. So, the point is (15,1).

She covered 3 miles in 30 minutes. So, the point is (30,3).

Slope of the line:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\dfrac{3-1}{30-15}[/tex]

[tex]m=\dfrac{2}{15}[/tex]

Therefore, she is riding [tex]\dfrac{2}{15}[/tex] miles per minute.

What is 5,836,197 rounded to the nearest hundred

Answers

Answer:

Rounded to the nearest hungered is 5,836,200

Which of the following is an irrational number?
A) √0.036
__
B) 7.25

C) √1

D) 10

Answers

10 is the answer to your question
The answer to this question is A

HELP DN#!#errfreeeeeeeeeeeeeeeeeew

Answers

Answer:

d

Step-by-step explanation:

Graph the linear equation y= -2/3x+4

Answers

Use the desmos calculator it will really help for graphing things
Use the app demos you put it in and it shows you how it is graphed

What is the slope? I know the y intercept is 4 but I’m having trouble with M

Please help ASAP :,)

Answers

Answer:

2

Step-by-step explanation:

From pt to pt is goes up 2 and 1 to the right

2/1=2

the slope is 2. Hope this helps:)

THIS IS FOR 60PTS SO ANSWER Explain how you got your answer 4x-20+2x-12=10

Answers

Answer:

x = 0.333...(repeating or .34 if u round)

Step-by-step explanation:

add 4x and 2x= 6x

20- 12 = 8

6x + 8 = 10

  -8      -8

6x = 2

6      6

             

x = 0.333...(repeating or .34 if u round)


Use the diagram at the right to determine x and y. AB and CD are
straight lines.


Name a pair of vertical angles:



Find the measure of

Answers

Answer:

x=30

y=52

verticle angles: AOC and DOB

Step-by-step explanation:

"on a recent test, Ahmed knew many of the answers, but there were four"

Answers

Answer:

Thank you for sharing Ahmeds brilliance with us.

Step-by-step explanation:

Please help! I’ll give brainleist!

Answers

x and y are equal to 36.8
X and Y are 100% equal to 36.8

What term is defined by the formula?

Answers

The answer is b ...................................

I will mark the brainiest! Please, and thanks! :)
(For the second one, just put it down on a piece of paper and upload a pic)

Answers

The best thing is to have a ruler with the appropriate units to construct these triangles;)

Please anybody help

Answers

Answer:

-4 just kidding it is 3

Step-by-step explanation:

If f(x) = 3x + 2, then find the value of x such that f(x) = -4. A. -14 B. -10 C. -2 D. 14

Answers

Answer:

C.

Step-by-step explanation:

f(x) = 3x+2

f(x) = -4

-4 = 3x+2

-4-2 = 3x

-6 = 3x

-6/3 = x

-2 = x

x = -2

Ron’s class donated d dollars to a local charity. Danny’s class donated 21% more than Ron’s class. Which expression shows the amount Danny’s class donated in terms of the amount donated by Ron’s class?
A.
1.21d
B.
0.79d
C.
d + 0.79d
D.
d + 0.21

Answers

Answer:

+0.21

Step-by-step explanation:

Answer:

It is A

Step-by-step explanation:

Had This Question

n/8 +12 =64 solve for N.

Answers

Answer:

n divided by 8  Plus 12 = 64           n=416

Step-by-step explanation:

Answer:

n = 416

Step-by-step explanation:

n/8 + 12 = 64 (subtract 12 on both sides)

n/8 = 52 (now multiply both sides by 8 so that we can get n by itself)

n = 416

(plug in to check)

416/8 + 12 = 64 (simplify)

52 + 12 = 64 (collect like terms)

64 = 64

Hope this helps!!

-4 2/3 times (-1 1/2)
SHOW YOUR WORK TO GET BRAINLIEST~~~~!!~

Answers

Answer:

-4 2/3 times (-1 1/2)

Step-by-step explanation:

14.6 repeating

Store A
Store B
What is the amount of sales tax charged on the
repaired computer at Store A?
Computer
Repair
$1,200
$1,350
Sales Tax
6%
7%
Gratuity
15%
15%
Shipping
Free
2% of total
price

Answers

Answer:

72

Step-by-step explanation:

Calculate the average speed of a boat that travels 600 meters in 40 seconds.

Answers

Answer:

15 meters in 1 second

Step-by-step explanation:

Divide 600 by 40 which is 15

so it travels 15 meters in 1 second

hope this helps!

Answer:15 meters per second

Step-by-step explanation:

600/40= 15

I needed to solve for X did I do it right?

Answers

Answer:

you have to distribute the 4 to both parts so it would be 4x-8=34

so then it would be 4x=42

X=10.5

Step-by-step explanation:

Answer:

Yes you are right x=9

Step-by-step explanation:

Im in need for the answer to my question

Answers

Answer:

OK I'll go help

Step-by-step explanation:

Have a great day! :)

help please :(((aaaa

Answers

Answer:

i think its b

Step-by-step explanation:

Answer:

it for sure the second one

Step-by-step explanation:

Angad,malachy and Jim share £30 in A ratio 1:3:1 how much does each person get

Answers

Answer:

Angad=6

Malachay=3×6=18

Jim=6

Step-by-step explanation:

Angad,malachy and Jim share =£30 ratio =1:3:1

Let the part of the Angad=X

=3x

=X

So X+3x+X=30

5x=30

X=30/5

X=6

So part of Angad=6

Malachay=3×6=18

Jim=6

Step-by-step explanation:

A:M:J

1:3:1

let total amt be 5x

5x = 30

x = 6

thus, A get 6dollars , M get 18 and J 6

Topic: ratio and proportions

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

Lucy owns a bakery. She has 2 cakes baked and can bake 4 cakes every
hour. Write an equation for the number of cakes baked, c, in h, hours. *


equation?

Answers

Answer:

c=4h+2

Step-by-step explanation:

you start of with 2 cakes and every hour you can bake 4

Norman bought 16-pound bag of charcoal for $7.89 and a 10.4-pound bag for 5.69.Whats is the total weight of the two bags of charcoal?

Answers

The total weight of the two bags is 26.4

What’s 9x38328292672

Answers

Answer:

344954634048

Step-by-step explanation:

Theres something called a caculator

Answer:

344954634048

Step-by-step explanation:

can i get brainliest

Thomas and Sydney have a combined age of 57. Thomas is 13 years older than triple Sydney’s age. How old is Thomas? You must create a system of equations and use substitution to solve.

Answers

57-13=44. If Sydney is 11, then Thomas is 46. 11x3=33, and 33+13=46. To check our answer, we will add 46+11. 46+11=57.

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