Mathematics Middle School

What is the solution to this system of equations?

Negative 3 x + 5 y = negative 2. 3 x + 7 y = 26.
(4, 2)
(2, 3 and one-third)
no solution
infinitely many solutions

Answers

Answer 1

Answer:

4,2

Step-by-step explanation:

did the test

Answer 2

The solution of the system of equation is (4, 2) which is correct option(A).

What is equation?

Equation is the defined as mathematical statements that have a minimum of two terms containing variables or numbers is equal.

Given the two systems of equations,

-3x + 5y = -2

3x + 7y = 26

Adding the both equations

-3x + 5y + 3x + 7y = -2+26

12y = 24

y = 2

Substitute the value of y in any one of the equations,

3x + 7 y = 26

3x + 7(2) = 26

3x = 26-14

3x = 12

x = 4

Hence, the solution of the system of equation is (4, 2).

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Related Questions

42 = 7r
Answer the question.

Answers

Answer:

r = 6

Step-by-step explanation:

Divide both sides by 7

Which is written like this:

42/7 = 7r/7

Which 42/7 = 6

and 7/7 = 1

=> 6 = r or r = 6

The solution to the equation 42 = 7r for r is r = 6

How to determine the solution to the equation for r

From the question, we have the following parameters that can be used in our computation:

42 = 7r

Rewrite the equation as

7r = 42

Multiply 1/7 to both sides of the equation

so, we have the following representation

1/7 * 7r = 42 * 1/7

Evaluate the products on the right hand side

This gives

1/7 * 7r = 6

Evaluate the products on the left hand side

This gives

r = 6

Rewrite as

r = 6

Hence. the solution is r = 6

Answers

Answer:

y = 15

x = 30

Step-by-step explanation:

Answer:

y = 15

x = 30

Step-by-step explanation:

Since adjacent are equal, that means all 4 angles are equal to 90 degrees

6y = 90

Divide by 6

6y/6 = 90/6

y = 15

3x = 90

Divide by 3

3x/3 = 90/3

x = 30

A roller coaster uses the track in this picture. Where will the roller coaster car have the most kinetic energy?

W

X

Y

Z

Answers

Answer:

X because potential energy is high kinetic is low

probability
Let E and F be two events that are mutually exclusive with
P(E) = 0.1 and P(F) = 0.6. What is the probability of
P(E U F)?
0.6
0
0.8
0.7? helpppplll

Answers

Answer:

0.8

Step-by-step explanation:

I need the answer thank you!

Answers

Answer:

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors.

find the measure of arc UT Given a.168
b.192
c.84
d.96

Answers

Answer:

is there supossed to be a picture?

Step-by-step explanation:

Answer:

Can you please give us a picture!

Step-by-step explanation:

Solve the following system of equations using any method you want.
10y+24=-3x
3x-9=y

Answers

Answer:

Step-by-step explanation:

3x-9=y

+9. +9

3x=9y

divide three to both sides answer

SHOW WORK!! need answer asap

Answers

Answer:

x = 10

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles

12 +10x = 81 + 31

Combine like terms

12 +10x = 112

Subtract 12 from each side

12-12+10x = 112-12

10x= 100

Divide each side by 10

10x/10 = 100/10

x = 10

Answer:

Step-by-step explanation:

Exterior angle = sum of interior angles

12 + 10x = 81 + 31

12 + 10x = 112

10x = 100

x = 10

hi does anyone know the answer

Answers

Answer:

153.938040026...

Step-by-step explanation:

Remember Apple Pies R 2

A=π*r²

Remember Cherry Pie Delicious

C=π*d

Answer:

Area = 49 π cm²

Step-by-step explanation:

Radius = Diameter / 2 = 14 / 2 = 7 cm

Area = π r ²

Area = π (7)²

Area = 49 π cm²

math question down below screen shot

Answers

Answer:

the screen shoy isnt showing up

Step-by-step explanation:

Will give brainliest answer

Answers

Answer:

Step-by-step explanation:

The radius is half of the distance across the circle

The answer is 2 units

A sports stadium holds 14,600 people. There are eight home games in
a season. Find the total number of people who could attend home
games in one season.

Answers

Answer:

116800

Step-by-step explanation:

14600x8

166800

Answer:

Step-by-step explanation:

hope this helps you

Simplify x^2-4x+4/x^2-4

Answers

Answer:

x2 - 4x - 4

———————————

x - 2

Step-by-step explanation:

Need help asappp
Find the surface area of a triangular prisms, base measures 10 cm, height measures 12 cm, sides measure 13 cm

Answers

Answer:

552

Step-by-step explanation:

Kathy made at least one error........

Someone please help it the last question and STAY SAFEEEEE.

Answers

Answer:

185

Step-by-step explanation:

step 2.

-40-75+100+200

=-115+300

=185

The volume of this cone is 376.8 cubic feet. What is the radius of this cone?

Use ≈ 3.14 and round your answer to the nearest hundredth

Height is 10ft

Answers

Answer:

The radius of the cone is 6 feets.

Step-by-step explanation:

We have,

Volume of the cone is 376.8 cubic feet

Height of the cone is 10 ft

It is required to find the radius of this cone. The formula of the volume of a cone is given by :

[tex]V=\dfrac{1}{3}\pi r^2 h[/tex]

r is radius of cone

[tex]r=\sqrt{\dfrac{3V}{\pi h}} \\\\r=\sqrt{\dfrac{3\times 376.8}{3.14\times 10}} \\\\r=6\ ft[/tex]

So, the radius of the cone is 6 feets.

Find the volume of a rubber shell on a ball if the outer diameter of the ball is 24in and the inner diameter is 23.5in.

Answers

Answer: 433.1

Step-by-step explanation: I haven’t figured the work out yet

Answer:

433.1

Step-by-step explanation:

Which value for x will make 3x + 10 > 75 correct?

Answers

Answer:

The answer is D

Step-by-step explanation:

I subtracted 10 from 75 and got 65 then divided 65 by 3 and got 21

The answer is c.

An inequality solution is any value of the variable that makes the inequality true. Solving linear inequalities is almost exactly like solving linear equations.

How to find which value for x will make 3x + 10 > 75 correct?

Subtract 10 from both sides we get , 3x+ 10 - 10 = 75 - 10

3x + 0 > 65

divide both sides by 3 implies

3x / 3 = 65 /3

=> x > 15.

Thus Option c is correct.

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What is the value of x?
B
704
C
X
Enter your answer in the box.
30°
o
X=

Answers

So the right answer is 80 degree.

Look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

[tex]x = 80 \: \: degrees[/tex]

Step-by-step explanation:

[tex]70 + 30 + x = 180 \\ 100 + x = 180 \\ x = 180 - 100 \\ x = 80[/tex]

( Sum of the angles in a triangle is 180 degrees)

hope this helps

brainliest appreciated

good luck! have a nice day!

HELP ME ASAP!!

Which of the following tables represents a function?

x 1 −1 4 −4
y 8 8 10 10

x 2 2 3 3
y 6 −6 7 7

x 5 −5 5 −5
y 10 11 12 13

x 2 2 7 7
y 2 3 4 5

Answers

Answer:

1) x 1 −1 4 −4

y 8 8 10 10

Step-by-step explanation:

x 1 −1 4 −4

y 8 8 10 10

When each input in set x has exactly one output in set y, the relation is a function.

ALL OF THESE ARE NOT FUNCTIONS !!!!!!!!!!

x 2 2 3 3 number 2 has 2 different outputs → not a function

y 6 −6 7 7

x 5 −5 5 −5 number 5 and -5 have 2 different outputs → not a function

y 10 11 12 13

x 2 2 7 7 2 and 7 have 2 different outputs → not a function

y 2 3 4 5

Answer:

A. x 1 −1 4 −4

y 8 8 10 10

Step-by-step explanation:

If cos A = 12/13 , and ∠A is in the fourth quadrant, find the exact value of sin2A.

Answers

Answer: 0.71

Step-by-step explanation:

we have that cos(A) = 12/13

then:

A = Acos(12/13) = 22.62°

But A is in the fourth quadrant, so A is actually 22.62° + 180° = 202.62°

Then Sin(2A) = sin(2*202.62°) = 0.71

Find the slope of the line passing through these points: (5,2) and (-10,12)
Plz help
A)-3/2
B)-2/3
C)3/2
D)2/3

Answers

Answer:

-2/3

Step-by-step explanation:

The slope of a line is found by

m= (y2-y1)/(x2-x1)

= (12-2)/(-10 -5)

= 10/-15

= -2/3

many organize a classroom party. there are 20 of cold drinks at the party, 13 of which contain diet Pepsi, what is the probability that randomly selected drink will be a diet Pepsi? answer key

Answers

Answer:

so its either 13/20

Step-by-step explanation:

if you get this wrong sorry:(

The answer is 13/20

Explanation:
20 is the denominator because it is how many drinks there are in total. 13 is the numerator because that’s how many are Diet Pepsi’s and you cannot simplify this. That’s why the answer in 13/20.

P.S whenever you can simplify this you should :)

What is the range for the following set of numbers: 199, 211, 63, 200, 544, 347, 727, 98, 110 *

Answers

Answer:

Minimum = 64

Maximum = 727

Medium = 200

Mean = 277.667

Mode = none

s = 223.825

Q = 211.024

n = 9

Which is the answer?

Answers

Answer:

Step-by-step explanation:

They are congruent by ASA because the problem already tells you one side is equal, and also says that the opposite sides are parallel. Therfore, teh opposite interior angles are equal and you can take the vertical angles, leading to ASA.

Answer:

ASA

Step-by-step explanation:

Hope this is helpful!

A square has sides of length 8 inches. To the nearest tenth of an inch, what is the length of its diagonal?

Answers

I might be wrong, but I think it is 8.
I think it’s 8 because all side lengths are equal in a square, meaning if one side length is 8 all the other side lengths are going to be 8 also.

Pls help!!! Which steps would you use to solve this equation? Check all that apply.
p + 7 = 12
O Subtract 7 from both sides of the equation
a Subtract 7 from 7.
7 -7 = 0 and 12 - 7 = 5, so p = 5.
I Substitute 12 for p to check the solution
O Substitute 5 for p to check the solution.

Answers

Answer:

you subtract 7 from both sides

Step-by-step explanation:

1
1) A basket contains four apples and four
peaches. You randomly select a piece of
fruit and then return it to the basket. Then
you randomly select another piece of fruit.
Both pieces of fruit are apples.
Are the events independent or dependent?
What is the probability?

Answers

Answer:

independent and 1/4

Step-by-step explanation:

it is independent because you replaced and that still kept the total outcomes.

1/2 times 1/2 which is 1/4

Help please!! I want to graduate but not good at math!! Only class I have left please!!

Answers

Answer:

Bro write the question better

Step-by-step explanation:

angles in a triangle measure (2.3x +25) and (5.8x + 11). what is the value of x if the two angles are congruent?

Answers

Answer:

x = 4

Step-by-step explanation:

To answer that we put them into an equation

2.3x + 25 = 5.8x + 11

and Solve

2.3x + 25 - 25 = 5.8x + 11 - 25

2.3x = 5.8x - 14

2.3x - 5.8x = - 14

-3.5x = -14

Divide both sides by -3.5 and you get

x = 4

Other Questions

Which of the following is the healthiest type of carbohydrate?A Bread made with white flour B Rice made with whole grains C Cereal made with refined grains D White rice How to do the problem and what the answer is this thing is due today(30 points!) Everybody in the United States has heard the song about the star-spangled banner. Nearly everybody has sung it. It was written by Francis Scott Key.Key was a young lawyer. In the War of 1812 he fought with the American army. The British landed soldiers in Maryland. At Bladensburg they fought and beat the Americans. Key was in this battle on the American side.After the battle the British army took Washington, and burned the public buildings. Key had a friend who was taken prisoner by the British. He was on one of the British ships. Key went to the ships with a flag of truce. A flag of truce is a white flag. It is carried in war when one side sends a message to the other.When Key got to the British ships, they were sailing to Baltimore. 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What is the solution to this system of equations? Negative 3 x + 5 y = negative 2. 3 x + 7 y = 26. (4, 2) (2, 3 and one-third) no solution infinitely many solutions

Answers

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What is the solution to this system of equations?

Negative 3 x + 5 y = negative 2. 3 x + 7 y = 26.
(4, 2)
(2, 3 and one-third)
no solution
infinitely many solutions