Mathematics College

Determine the solution to the system of equations {4x+15y=40
-8x-5y=20}

And write your solution as an ordered pair.



Answers

Answer 1

Step-by-step explanation:

4x+15y= 40-5y= 20

= 4x+15y+5y= 40-20

4x+20y= 20

Related Questions

Solve system by using substitution: 5x + 3y = -4
y - 2x = 6

Answers

Answer:

x = -11/3, y = -4/3

Step-by-step explanation:

[tex]y-2x=6\\y = 2x + 6[/tex]

[tex]3(2x + 6) = -4\\6x + 18 = -4\\6x = -22\\x = -11/3[/tex]

[tex]3y = -4\\y = -4/3[/tex]

Which steps can be used to solve for the value of y ? 23(y+57)=178

Answers

Answer:

y= -49.26 or -49 6/23

Step-by-step explanation:

First distribute the 23 to y and 57

23y+1311=178

then subtract 1311 from both sides

23y=-1133

Then divide 23 to both sides

y= -49.2608695652

rounded: -49.3

as a fraction: -49 6/23

Three fourths of the product of four fifths and fifteen

Answers

Answer:

I think it is 9

Step-by-step explanation:

Answer:

The answer is 9

Step-by-step explanation:

15 * [tex]\frac{4}{5}[/tex] * [tex]\frac{3}{4}[/tex] = 15 * [tex]\frac{3}{5}[/tex] = 9

Which is a possible solution for -4 LaTeX: >> X

Answers

[tex] \text { > }[/tex]

\tex {>} is to be written

What is the solution to the system of linear equations graphed here?
A (2, -1)
B) (-1,2)
C (2, 1)
D) No Solution

Answers

Answer:

the solution is (-1, 2).


Find the gradient of the line segment between the points (2,-3) and (-3,-8)

Answers

Answer:

1

Step-by-step explanation:

gradient=

[tex] \frac{ - 8 - ( - 3)}{ - 3 - 2} = \frac{ - 8 + 3}{ - 5} = \frac{ - 5}{ - 5} = 1[/tex]

Find the slop of the line that passes through the points (-3,-1) and (0,3)​

Answers

Step-by-step explanation:

Let the points of the given coordinates ( -3 , -1 ) & ( 0 , 3 ) be A and B respectively.

[tex] \underline{ \underline{ \text{Given}}} : [/tex]

A ( -3 , -1 ) & B ( 0 , 3 )

Let A ( -3 , -1 ) be ( x₁ , y₁ ) & B ( 0 , 3 ) be ( x₂ , y₂ )

[tex] \underline{ \underline{ \text{To \: Find}}} : [/tex]

Slope of the line that passes through the points A ( -3 , -1 ) & B ( 0 , 3 )

[tex] \underline{ \underline{ \text{Solution}}} : [/tex]

[tex] \boxed{ \sf{slope = \frac{y_{2} - y_{1}}{x_{2} - x_{1}} }}[/tex]

~Plug the known values and then simplify !

⟼ [tex] \tt{ \frac{3- ( - 1)}{0- ( - 3)}} [/tex]

⟼ [tex] \tt{ \frac{3 + 1 }{0 + 3} }[/tex]

⟼ [tex] \tt{ \frac{4}{3}} [/tex]

[tex] \red{ \boxed{ \boxed{ \tt{Our \: final \: answer : \underline{ \boxed{ \tt{ \frac{4}{3}}}}}}}} [/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Maria earned a score of 80% on her math test. Each question on the quiz was worth 1 point, and Maria got 12 questions correct. How many questions were on the quiz?

Answers

Answer:

15 questions were on the quiz

Step-by-step explanation:

12/15 = .80 = 80%

Answer:

68?

Step-by-step explanation:

PLS HELP ME AGAIN SMART PEOPLE I NEED A GOOD ANSWER PLSS IM CRYING

Answers

Answer:

1.b

2.d

Step-by-step explanation:

1.6(3x + 5) = 18x + 30 = 15x + 30 + 3x.

SO, the ? is equal to 30.

2. d

a student runs 2 mins for every 12 minutes he walks.

Answers

He walks for 24 minutes I think

Answer:look below

Step-by-step explanation:

4=24

6=36

8=48

10=60

HELP AAAAAAAAAAAAAAAAAAA
Name all the factors of 12.

Answers

I think it’s 1 2 3 4 6
2 4 6 8 1 hope this helps

Find the solution set of this inequality 2x+4<6

Answers

Based on your image, I will assume u meant: [tex]|2x+4| \leq 6[/tex]

This means that x will have two solution sets, due to the absolute value.

[tex]-5\leq x\leq 1[/tex]

A class is collecting data on the number of pets each student has. The class is divided into 4 groups. Which table shows the group of students with the greatest mean number of pets?

Answers

Answer:

The group of students on the top right those students have a mean of 2.6

Step-by-step explanation:

The mean is adding up all the different numbers of pets for each kid and dividing it by the number of kids so 13 the number of pets and 5 the number of different students

The length of a subway is 385 miles. If 3 cm represents 35 miles on the map, then what is the length of the subway on the map in cm?

Answers

Answer:

33cm

Step-by-step explanation:

385 / 35 = 11

11 times 3 = 33

Ivan started the week on page 35 of his book and read 20 pages each night. What page will Ivan be on if he reads for 8 nights?

Answers

Answer: he should be on page 195

Step-by-step explanation:

If you are the sole owner of a company with a net worth of $2.35 million dollars and are sued for $4 million dollars what is the amount that you must pay in the lawsuit? Why do you have to pay the amount that you stated?

Answers

Explanation: Well in my opinion.... Your networth doesn't matter its just showing how much money you spent...

Soo if you had $4 Million you'd pay it automatically.

Hello, how are you?. I need help. Do you know where they sell teething toys for puppies in California?​

Answers

Petco has a bunch of stuff for puppies

A high school soccer team has 3 freshman, 4 shohpmores, 6 juniors, and 7 seniors. Two random players will be chosen by the coach to lead the warm up. What is the probability that the coach will select a sophomore and then a senior?​

Answers

Answer:

about 21? I think

Step-by-step explanation:

Guys help me please.
How to solve it?

Answers

i don’t have a calculator right now but a triangle always adds up to 180 degrees so yeah

Answer:

16.21 degrees

5) 9x + 8y = -2
-5x + 8y = 26
A) (2, 2)
C) (2,-2)
B) (-2,-2)
D) (-2, 2)

Answers

Answer:

5)9x+8y=-2

-5x+8y=26

A) (2,2)

the anwser is A :))))

What is the surface area please help I will mark brainliest

Answers

Answer:

292.5 square cm

Step-by-step explanation:

13 x 9 / 2 = 58.5 x 5 = 292.5 square cm

Hope that helps!

HELP FAST WILL MARK BRAINLYIST

Answers

Answer:

c

Step-by-step explanation:

Elliott took a survey for Turkey Filet. 18 students prefer turkey tenders and 12 students prefer fried turkey sandwiches with pickles on buttered buns. What percentage of students prefer turkey tenders? ​

Answers

Answer: 60%

Step-by-step explanation: multiply 18 by 100 than divide by 30

How many 1/8 foot long wooden pegs can be cut from a plank that is 3/4 foot long?

Answers

Answer:

6 pegs can be cut.

Answer:

24

Step-by-step explanation:

!=1

What is the decimal multiplier to decrease by 0.4%

Answers

Answer:

.004

Step-by-step explanation:

translate the percent to a decimal

Answer:

0.996

Step-by-step explanation:

for a decrease u need to transfere to a decimal then take it away from 1

I need help with this to I just want to make sure I’m right or wrong.!

Answers

i’m pretty sure you’re right. hope this helps:)

Answer:

the answer is D

Step-by-step explanation:

Ben is thinking of two numbers. Their sum is -10 and their difference is -2.​

Answers

Answer:

ben is thinking of the equation -10    minus -8 and the answer for the problem is -2

Step-by-step explanation:

Drag each equation to show if it could be a correct first step to solving the equation 3(6+x)=24.

ANSWER FAST PLEASE

Answers

Answer:

x=2

Step-by-step explanation:

It's 18+ 3x = 24 and (3.6) + (3.x) = 24

hello i am not that good at math and i struggle with fractions

problem: “divide 2/8 by 9/18. Input your answer as a reduced fraction”

how do i do that?? how do i divide fractions and reduce them?

Answers

Answer:

the answer is 1/2 or 0.5

Step-by-step explanation:

So basically you just get on a calculator and divide it after you do that it will give you a decimal and all you have to do is convert that decimal to a fractiom so we know that 0.5 is a half so therefore 0.5=1/4

In the slope - 6/11, the 11 indicates to

A. Rise 11 units
B. Fall 11 units
C. Run 11 units

Answers

Answer:

C. run 11 units

Step-by-step explanation:

because you run down -6 you rise 11

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