Mathematics Middle School

Which represents the solution(s) of this system of equations? (–3, –1) (–3, 5) (–3, 5) and (–1, 9) (1, 13) and (3, 20)

Answers

Answer 1

Answer:

Following on from step 3

0 = (x + 1)(x + 3)

equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 3 = 0 ⇒ x = - 3

Substitute these values into either of the 2 equations for the corresponding value of y

using y = 2x + 11

x = - 1 : y = - 2 + 11 = 9 ⇒ (- 1, 9 )

x = - 3 : y = - 6 + 11 = 5 ⇒ (- 3, 5 )

solutions are (- 3, 5 ) and (- 1, 9 ) <<<<<<< CORRECT

Step-by-step explanation:

Answer 2

The solutions that represents the system of the equation are (- 3, 5 ) and (- 1, 9 )

What is a system of equations?

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

0 = (x + 1)(x + 3)

By equating each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 3 = 0 ⇒ x = - 3

Substitute these values in 2 equations for the corresponding value of y

using y = 2x + 11

x = - 1

y = - 2 + 11 = 9 ⇒ (- 1, 9 )

x = - 3

y = - 6 + 11 = 5 ⇒ (- 3, 5 )

Therefore, the solutions are (- 3, 5 ) and (- 1, 9 )

Learn more about the system of equations here:

https://brainly.com/question/26675692

#SPJ2

Related Questions

PLS HELPPPPP
Name the following geometric image

Answers

Answer:

Ray

Step-by-step explanation:

A ray is a line that has one definite start point and then continues in one direction forever. Rays are commonly combined to create angles. In an angle, each ray begins at the vertex, the definite starting point, and then goes straight in one direction. In this question, the image would be called ray LM.

this is a ray, L to M makes it a ray because it always has to start at the endpoint and it continuously goes in the direction of the arrow:)

I need help.What’s 0.0323/0.000034413?The first 6 digits.

Answers

Answer:

938.681

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

938.598785

this is the answer. have a good day!

Question 7(Multiple Choice Worth 5 points)

(05.01 LC)

Which equation can be used to calculate the area of the shaded triangle in the figure below?

[ image ]

A // 2(12 + 4) = 32
B // fraction 1 over 2(12 + 4) = 8
C // 2(12 × 4) = 96
D // fraction 1 over 2(12 × 4) = 24

Answers

Answer:

D

Step-by-step explanation:

Area of the triangle is (12 x 4)/2 = 12 x 4 x 1/2 = 24

Answer is :

D

step by step

Help please. Geometry.

Answers

Answer:

I think its sometimes sorry if im wrong

A square is always a rectangle

52. x and y are two complementary angles such that y is 16° larger than x.
Find the value of x.
Find the value of y.

Answers

Answer:

x= 29 degrees,  y= 61 degrees

Step-by-step explanation:

Complementary angles and up to 90 degrees, . Sif half of 90 is 45 and y is 16 more than x,  you just need to add 16 to y and subtract 16 from x.

The price of a mat is x USD from the start. Write an expression for the price:
a) After it's been reduced by 50%
b) After it's been reduced by 50% twice
c) After first being reduced by 60% and then 40%

Answers

Answer:

Hello good evening friend

EASY QUESTION
Hep :)

Answers

I would say there are 11.25 squares

Answer:

i believe it may be 14.

A letter is chosen from the word shown.

Letter tiles are shown. The letters are B, E, L, I, E, V, A, B, L, E.

Which describes the probability of randomly choosing a consonant?

Answers

Answer:

1/2 (half)

Step-by-step explanation:

Its a fifty-fifty chance since there are 5 consonants and 5 vowels

I WILL GIVE BRAINLY TO CORRECT ANSWER
Which statement best describes the mean of the data listed below?
10, 7, 9, 5, 8, 6, 7, 3, 10, 5, 7

The middle value of the ordered data set is 7.

The value that occurs most often in the set is 7.

The difference between the smallest value and the largest value is 7.

The sum of all the data values divided by the number of data values is 7.

Answers

Answer:

The sum of all the data values divided by the number of data values is 7.

Explaination:

The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.

Answer:

The last one

Step-by-step explanation:

We know that the mean is 7, what we are trying to identify is which situation correctly describes how to find the mean.

Define

Mean = Sum of values divided by number of data values

Reasoning

For "The middle value of the ordered data set is 7."

The middle value is known as the median not mean therefore this answer is not correct.

For "The value that occurs most often in the set is 7."

The number that occurs the most is known as the mode not the mean therefore this is not the correct answer

For " The difference between the smallest value and the largest value is 7.

"

The difference between the smallest and largest number is known as the range therefore this answer is not correct.

We're left with "The sum of all the data values divided by the number of data values is 7." which does indeed correctly describe how to find the mean.

please help!! giving brainlest if explained ??!

Answers

s = d/t

0-2
distance travelled = 2m
time travelled = 2s
speed = 2/2 = 1m/s

2-3
distance travelled = 2.7m
time travelled = 1s
speed = 2.7/1 = 2.7m/s

4-6
distance travelled = 0m
time travelled = 2s
speed = 0/2 = 0m/s (not moving)

what she said^^ i think yes

On the map, the distance between Lake Moore and Lake Wyman is 4.5 centimeters.

Which of the following is closest to the actual distance between Lake Moore and Lake Wyman?

Answers

Answer: I think it' s A, possibly

​4 quarter hours = ​
hours

Answers

Answer:

[tex]4 \frac{1}{4} = 4.25 \: hours[/tex]

Answer:

a quarter of an hour =15 mins

so therefore, 4 quarter hours =

15 x 4= 60 mins

    =1 hour

Step-by-step explanation:

i need help with this.

Answers

Answer:

blue

Step-by-step explanation:

it makes the most sense but i d not have much time to explain

i need help please help please and friend me

Answers

Complimentary, Non Coordinatry
1) complimentary angles
2) non coordinatry angles

A tabletop in the shape of a trapezoid has an area of 5,328 square centimeters. Its longer base measures 127 centimeters, and the shorter base is 65 centimeters. What is the height?

Answers

The answer is definitely 55.5

Can someone help?
A hill used for snowboarding has a vertical drop of 3500 feet. The angle the run makes with the ground is 18 degrees. Estimate the length of the run, r. Show answer to nearest tenth. show comma in answer if needed

Length = ? ft.

Answers

Answer:

run = 1081.6 ft

Step-by-step explanation:

sin = opp/hyp

sin18 = 3500 / run

run = 3500 / sin18

run = 1081.6 ft

1081.6 ft. Is the answer for ur question

Solve for n.

–2(n + 2) + 6 = 8

n =

Answers

Answer:

n = -3

Step-by-step explanation:

Answer:

n = -3

Step-by-step explanation:

We have the equation –2(n + 2) + 6 = 8. First, we simplify it:

–2(n + 2) + 6 = 8

–2(n + 2) = -2n + (-4) = -2n - 4

So now we have:

-2n - 4 + 6 = 8

We can subtract 6 from both sides of the equation to get:

-2n - 4 = 2

We can also add 4 to both sides to get:

-2n = 6

Divide both sides by 2 to get:

-n = 3

Multiply both sides by -1 to get:

n = -3

Select ALL the values from the set {4, 4.5, 6.5, 9}

Answers

Answer:

7.09

Step-by-step explanation:

the inequality states a number is greater or equal to 4.

so we just have to choose the numbers that fit under the statement.

they would be:
5.5 & 8

Pls help will give brainlest if it’s right :)

Answers

225, don’t be mad at me if I’m wrong, but my apologies if I am

Answer:

x = 225

Explained:

(27 + 48)*3 = x

I hope this is right.

Could yall answer 3 and 7 please!

Answers

3. I think it’s A but 7. I know it’s D for sure

Answer:

3 A 7 D

Step-by-step explanation:

I think that's the answer

PICTURE BELOW / What is the surface area of this right rectangular prism?

Enter your answer in the box.

cm²

Answers

Cannot be answered with given information
This image is not very good so we won't be able to help and it needs to have numbers I would email your teacher if I was you.

Which could be the lengths of the sides of a right triangle?
A. 6 cm, 7 cm, 8 cm
B. 7 in., 17 in., 11 in.
C. 9 m, 12 m, 14 m
D. 11 ft, 60 ft, 61 ft

Answers

Answer:

D. 11 ft, 60 ft, 61 ft

Step-by-step explanation:

By using the Pythagorean Theorem, a^2 + b^2 = c^2, we figure out theat 11^2 + 60^2 = 61^2. 11^2 + 60^2 = 61^2, 121 + 3600 = 3721, 3721 = 3721, so option D

D. 11ft, 60 ft, 61ft

By what percent did the enrollment increase from 2013 to 2014?

2013: 210
2014: 285

Answers

The answer is 2014

Hope this helps

What is the value of N ?

Answers

Answer:

40º

Step-by-step explanation:

straight line: 180º

180-58-82=40

Answer:

40º

Step-by-step explanation:

3:10= 3/10 ​ = N/100 help ​

Answers

Answer:

N/100=30/100=30:100

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

cross multiply

10 multiplied with N = 3 multiplied with 100

10N = 300

N=30

Mandie wants to fence in her corral, and
needs to know how much fencing to
purchase. The corral has an irregular shape, with sides of 25 1/4 feet, 330 inches,
6 yards, one foot, 3/160of a mile, and 9 feet

How much fence material will she need?

Answers

Answer:

179.75 feet of fencing material

Step-by-step explanation:

First 25 1/4 feet is 25.25 feet

330 inches is 27.5 feet

6 yards is 18 feet

3/160 of a mile is 33 yards, which is 99 feet

add the 1 foot

and lastly add all that up including the 9 feet at the end,

if you were looking for another unit you can convert that!

179.95 ft of fencing material is need for Mandie to complete her fence in the corral

answer both these...................

Answers

Answer:

I think the rate of change or slope would be 6 or 6/1

And the equation y=6x

Step-by-step explanation:

Answer:

y=6x

Step-by-step explanation:

divide each y value by the x value and ye

in the United States, a person 18 years of older can vote. Write an inequality to represent the age. a. OF The People that can vote.
​

Answers

Answer:

a ≥ 18

Explanation:

This inequality represents that your age must be 18 OR GREATER in order to vote.

x is greater than or equal to 18

PLEASE HELP ANSWER.(correctly)​

Answers

The answer for this is C
The answer is c :))))))

Quinn has 6 bottles of water that each weigh \large \frac{3}{5} pound. What is the total weight of the water bottles?_

Quinn has 6 bottles of water that each weigh \large \frac{3}{5} pound. What is the total weight of the water bottles?

Answers

Answer:

3.6 pounds

Step-by-step explanation:

If 1 bottle weighs 3/5 pounds

the 6 bottles will weigh 6 x 3/5

= 18/5

ratio method :

1:3/5

6:x

since the ratios are direct we can cross multiply

18/5 = 1x

so the 6 bottles weigh 18/5 pounds or 3.6 pounds

3.6 pounds. You’re welcome
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