Mathematics College

y+7=5x
-3x-2y=-12
solve for x and y

Answers

Answer 1

Answer:

y=3

x=2

Step-by-step explanation:

Making substitution

y+7=5x

y=5x-7

Substituting the y into the other equation

-3x-2(5x-7)=-12

-3x-10x+14=-12

-13x=-14-12

-13x=-26

x=2

We have x=2 then substitute it into the first equation

y+7=5(2)

y+7=10

y=10-7

y=3

So the answer is

y=3

x=2

Answer 2

Answer:

x=2 and y=3

Step-by-step explanation:

After solving, you can check your work by substituting the values of x and y into the equations and solving for them.

3+7=10

10=10

-6-6= -12

-12 = -12

Related Questions

Elijah bought a new car for $25,000. He paid
$5,000 up front and then $600 per month. How
many months will it take Elijah to pay off the car?

Answers

Answer: 6 days too be exact

Step-by-step explanation:

Answer:

33.333 months

Step-by-step explanation:

25,000-5,000=20,000

20,000/600=33.333

If he payed $5,000 upfront, the he only has $20,000 remaining to pay. If he is paying $600 a month then you divide the $20,000 by the $600 to 33.333 months. Hope this helps

Is 0.36279979176191 rational or irrational

Answers

Answer is: Irrational because if the answer doesn’t repeat for an example 0.392827263, it’s irrational if it does repeat like this 0.3434343434 it’s rational! Hoped this helped!!

help ples me i hate ixl

Answers

Answer:

200

Step-by-step explanation:

Base of the prism is a square

So

[tex]\\ \tt {:}\longrightarrow Area\:of\:base=(side)^2[/tex]

[tex]\\ \tt {:}\longrightarrow (5)^2[/tex]

[tex]\\ \tt {:}\longrightarrow 25cm^2[/tex]

Now

[tex]\\ \tt {:}\longrightarrow Volume=Area\:of\:Base\times Height[/tex]

[tex]\\ \tt {:}\longrightarrow 25\times 8[/tex]

[tex]\\ \tt {:}\longrightarrow 200cm^3[/tex]

Can anyone please help me answer the
PICTURE IS PROVIDED!

Answers

Answer:

∠a = 29° (alt. int. angles)

∠b = 46° (alt. int. angles)

∠1 = ∠a + ∠b

= 29° + 46°

= 75°

there are 16 students working on a project if each student need 1/4 stick of clay are needed in all?

Answers

Answer:

4 sticks of clay

Step-by-step explanation:

To find the total amount of clay needed, multiply the number of students by the amount need for each one of them.

[tex]16[/tex] · [tex]\frac{1}{4}[/tex]

Multiply these by converting 16 into a fraction.

[tex]\frac{16}{1}[/tex] · [tex]\frac{1}{4}[/tex]

Multiply the numerators and denominators across.

[tex]\frac{16}{1}[/tex] · [tex]\frac{1}{4}=\frac{16}{4}[/tex]

Simplify this.

[tex]\frac{16}{4} =4[/tex]

The total amount of clay needed is 4 sticks.

I hope this helps :) Good luck ^^

Coin Calculation plz help

Answers

Answer:

I do not agree with either of them.

2^28 is the number 2 multiplied 28 times.

2^28 = 268,435,456

Step-by-step explanation:

Since exponents are repeated multiplication, you would have to multiply "2" 28 times.

Like this, 2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2.

The product of 2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2 is 268,435,456.

Therefore, I do not agree with either of them.

Please help giving brainliest please help

Answers

Answer:

G

Step-by-step explanation:

In the equation, 8.5 will represent how much money Oscar earns per hour, and the x represents how many hours he works. The inequality sign shows that the sum of 8.5x and 100 has to be at least 397.50 (397.50 and up), so H and J are automatically wrong. If Oscar had given his brother 100 dollars, there would be a subtraction sign, but there is an addition sign instead, meaning he gained 100 dollars that did not come from his job. It would be the most logical to say that his brother had given it to him, so G is the correct answer.

:)
Given that the volume of a rectangular prism is given by the formula V = lwh, what is the value of V if I = 7 cm, w = 5
cm, and h = 4 cm?
A)
16 cm
B)
48 cm
C)
70 cm
D)
140 cm

Answers

D. 140 cm, because 5 x 4=20 and 20 x 7 is 140.
The answer will be D.

Find the length of the third side. If necessary, round to the nearest tenth.This is on Pythagorean theory​

Answers

Answer:

23 because the 24 side is a little bigger than the other side

Step-by-step explanation:

When 334 college students are randomly selected and surveyed, it is found that 103 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.

Answers

Answer:

(.24329, .3734)

Step-by-step explanation:

1-propzint

n=334

x=103

c level .99

PLEASE HELP I WILL MARK BRAINLIEST!!!

Answers

Answer:

D: 6

Step-by-step explanation:

We know that the triangle is a right triangle

We can halve each of the sides

20/2 = 10

16/2 = 8

Pythagoream Theorem: A^2 + B^2 = C^2

C= 10

A= 8

10^2 - 8^2 = B^2

100 - 64 = 36

B^2 = 36

B = 6

Find the product of C =AB.
Cu=
C12=
C21 =
C22 =

Answers

Answer:

c11= -1

c12= 3

c21= 3

c22= -3

Step-by-step explanation:

on edg

Answer: HAVE AN awesome day

Step-by-step explanation:

PLS HELP!!
PLSSSSSSSSSSSSSSS!!!!!

Answers

Answer:

1. x = 15

2. x = 26

Step-by-step explanation:

Pythagorean Theorem:

a² + b² = c²

You brought a $5 gift card and 5 stuffed animals. You spent a total of $30. How much did each stuffed animal cost

Answers

Answer:

$6

Step-by-step explanation:

if you buy 5 stuffed animals for $30 then you divide 30 by 5 and get 6

Hey guy good morning How are you today can you please help me with my number seven question please I will mark you brainly ?

Answers

Answer:

b. 41.43gallons

Step-by-step explanation:

no of gallon = distance/rate(fuel economy)

=1243/30

=41.4333333333gallons

which is typically true regarding loan repayments A. The higher interest rate you receive the lower the total repayment. B. The quicker you pay off the loan to lower the total repayment. C. The quicker you pay off the loan the higher the total repayment. D. The time you take to pay off the loan does not affect the total amount of repayment.

Answers

Answer:

B  

the quicker you pay off the loan, the lower the total repayment.

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Yes bbbbbbbbbbbbbBBbbBbBB

Nadia's monthly budget is $2,750. How much does Nadia spend on Rent in a month, in dollars and cents?

Answers

Answer:

990

Step-by-step explanation:

Bailey is comparing two squares. The first square has an area of 144 cm2, and the second square has an area of 81 cm2. What is the difference in the side lengths of the two squares?

Answers

Answer:

They are both 63 Inches/ Lengths apart.

Step-by-step explanation:

You see when it comes to cm2 inches and lengths You must always Analyze your work and figure out if you can seperate the two among themselves equally. 81 Goes into 144. 63 plus equation.

Alternate exterior angles ​

Answers

Answer:

[tex]When \: two \: lines \: are \: crossed \: by \: another \: line \: (called \: the \: Transversal \: ):  \: Alternate \: Interior \: Angles \:  are \: a \: pair \: of  \: angles  \: on \: the \: inner \: side \: of \: each \: of \: those \\ \\ \\ \\ \\ two \: lines \: but \: on \: opposite \: sides \: of \: the \: transversal.[/tex]

hope it helps if it helps don'tforget to like and mark

I WILL GIVE YOU BRAINERLEST AND A LIKE


Find the area of the parallelogram.

Answers

Answer:

i am not very sure but i think its 50in

Step-by-step explanation:

area of parallelogram is height multiplied by the base

hope this helps

sam bought 4kg of red apples some yellow apples and 3 kg of green apples she bought a total of 9,000 whats the mass of the yellow apples

Answers

I believe the answer is negotiable 38

Last year, your salary was $33,975. This year, your boss tells you your salary will be $34,960. What percent raise (change) did you receive? Round your answer to the nearest tenth of a percent.

Answers

Answer:

2.9%

Step-by-step explanation:

Monica drinks 0.125 liters of milk during breakfast and 0.20 liters of milk after dinner everyday. Find the total amount of milk she drinks in a day, using significant digits.

A. 0.325 L
B. 0.33 L
C. 1 L
D. 3.25 L

Answers

The total number of milk drank in a day since the significant figure is not specified is 0.325 L.

What are significant figures?

Significant figures are a way of approximation of large numbers to the required approximation such as two significant figures, three significant figures, or more, as the case may be.

From the given information:

Monica drinks 0.125 liters of milk during breakfast, and0.20 liters of milk after dinner every day

The total number of milk drank in Liters in a day is:

= (0.125 + 0.20) L

= 0.325 L

Learn more about significant figures here:

https://brainly.com/question/24491627

#SPJ1

Answer:

the correct answer is B. 0.33 L

Explanation:

I just took this quiz and this was the correct answer.

PLEASE HELP!!!!

What mixed number do these squares model?


19/5=?

Enter your answer

Answers

Answer:

19/5= 3 4/5.

Step-by-step explanation:

19 divided by 5 equals 3 with a left over of 4. So 3 and 4/5 should be the answer. hope this helps! have a good day!

question 3 and 4
- 10 points

Answers

Answer:

3. B

4. 29, 33

Step-by-step explanation:

Corey buys chicken wings at a rate of $10 for 40 wings. He sells 10 wings for $5.
How much does Corey pay for each chicken wing he purchases?

Answers

Answer:

20

Step-by-step explanation:

The sum of 10 and hans savings is 49. Use the variable h to represent Hans savings.

Answers

Answer:

39 I believe. The question is a little confusing.

Step-by-step explanation:

49-10=h 39=h

Not sure if this is what you want the question is worded weirdly.

i need the answer asap 20 points

In an arithmetic sequence, the first term, a_1,a
1 , is equal to 5,5, and the fifth term, a_{5},is equal to 41.41. Which number represents the common difference of the arithmetic sequence?

Answers

Answer:

  10

Step-by-step explanation:

The general term of an arithmetic sequence is given by ...

  an = a1 +d(n -1) . . . . where a1 is the first term and d is the common difference

__

This formula can be used to find the value of d. The first term is given as 1, and the 5th term (a5) is given as 41. The value of n for the 5th term is 5.

  an = a1 +d(n -1)

  41 = 1 +d(5 -1) . . . . . substitute known values

  40 = 4d . . . . . . . subtract 1, simplify

  10 = d . . . . . . divide by 4

The common difference of this sequence is 10.

Answer:

10

Step-by-step explanation:

Jenny is dog sitting for 13 dogs. One runs away, and she is not sure which one. There were 3 Labradors (L), 2 Golden Retrievers (G), 3 Dalmatians (D), 4 terriers (T), and 1 bulldog (B) in the original group.
What is the size of the population of dogs that could have run away from Jenny?

1
5
11
13

Answers

Answer:

5

Step-by-step explanation:

It is 5 because she originally had 13. There are 5 types of dogs she was dog-sitting. There are 5 possible types of dogs that ran away.

After 1 year, $1,000 deposited in a savings account with simple interest had earned $30 in interest. What was the interest rate?

Answers

Answer:

3%

Step-by-step explanation:

The formula for simple interest is I = PRT, where I = interest earned/paid, P = principal amount deposited or borrowed, R = rate of interest as a decimal, and T = time in years.

I = PRT

30 = (1000)(R)(1)

30 = 1000R

R = 0.03

Multiply by 100 to get the percentage of 3%

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