Solve the system of equations using substitution.

4x – y = 7
3y – 12x = –21

(3, 5)

(6, 17)

no solution

infinite solutions

Answers

Answer 1

Answer:

infinitely many solutions

Step-by-step explanation:

solve  by substitution:

solve equation 1 for y: - y = 7 - 4x; divide by -1 to simplify into y = -7 + 4x

Substitute - 7 + 4x into the second equation to obtain:

3(-7 + 4x) - 12x = -21, which yields:

-21 + 12x - 12x = -21, which simplifies 0 = 0

a result of 0 = 0 means infinite solutions such as:

(2,1), (3, 5), (4, 9), (5, 13), (6, 17)....

Answer 2

Answer:

infinite soulutions

Step-by-step explanation:

i just did it and it was right on ed2021...


Related Questions

(8 2/3 - 3 1/2) x (4 1/6+2 1/3)

Answers

This is what I got hopefully it’s correct!

What is the answer to 17 and 18?

Answers

Answer:

17: 16.97

18: 17

Step-by-step explanation:

Use a ratio box to solve this problem: After working 6 months, Martha received a raise of 20%. If
Martha's previous pay was $6.90 per hour, what was ber hourly pay after the raise?


Please put step by step

Answers

Answer:

$6.90+20%-6 months to get this answer

help me plz god bless

Answers

Answer: d
Explanation

Answer:

D.

Step-by-step explanation:

When graphing, start by the y intercept.

y = 3x + 3 meaning 3 units up since the y intercept is 3

y = 3x + 3 then 3 extra units up since the slope and then one unit to the right

God bless you as well!

An employee worked for 8 hours on 2 days, 6 hours on 1 day, and 4 hours on 2 days. What is the average number of hours the employee worked per day

Answers

It is seven my boi I just know it. The answer is five

Need help no links please ASAP​

Answers

N= 80 degrees because it is opposite of the 80
M and P = 100 degrees each because they add to 80 degrees and make a straight line

08-31
[tex] - 1 \times \frac{1}{2} [/tex]

Answers

Answer:

- 23

- 0.5

Step-by-step explanation:

- 31 + 8

- 23

- 1 × 0.5

Simplify: -4r + s - 2r - 3s​

Answers

Answer:

-6r - 2s

Step-by-step explanation:

Combining Like Terms like this

-4r + s-2r - 3 s       <<<

-6r + s - 3 s

= -6r - 2s                <<<

Answer:

-6r - 2s

Step-by-step explanation:

Find the circumference of the object. Use 3.14 or
22/7 for 2. Round to the nearest hundredth if necessary,
2 meters
circumference: about
m

Answers

Answer:

19.73

Step-by-step explanation:

look up circumference formula and click solve

What is the image of (-4,-12) after dilation by a scale factor of the fraction one fourth centered at the origin

Answers

Answer:

Step-by-step explanation:

On a standardized test, the mean is 37 and the standard deviation is 2.5. Approximately what percent of the scores fall in the range 32 - 42 ?

A) 68%
B) 95%
C) 34%
D) 99%

Answers

Answer:

B) 95%

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 37, standard deviation = 2.5

Approximately what percent of the scores fall in the range 32 - 42 ?

32 = 37 - 2*2.5

So 2 standard deviations below the mean

42 = 37 + 2*2.5

So 2 standard deviations above the mean.

This question is the percentage of scores within 2 standard deviations of the mean, so, by the Empirical Rule, it is 95%, option B.

pppppppjnjk hieffhuie pleaase help

Answers

Answer:

B

Step-by-step explanation:

I'm not sure if it's right but you can try it

Answer:

answer: 30 in sq

Hope that helps!

WHATS THE ANSWER?? answer ASAP NO FILE

Answers

Answer:

a

Step-by-step explanation:

it is a because the shape is moving to the side

Answer:

The answer is B!

Question 5 of 10
The chord BC is a diameter of OO.
A. True
B. False

Answers

Answer: it’s true i just did the quiz

Step-by-step explanation:

Chord BC is a diameter of the circle as passes from the center O of the circle and its end points B,C lies on the circle so the statement is true.

What is Circle?

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.

O is the center of the Circle

Chord BC is the line segment passing from the center of circle

Chord is a line segment whose end points lies on the circle.

Diameter is defined as a line segment passing from the center of the circle whose end point lies on the circle.

A chord that passes through the centre of a circle is called a diameter, and it is the longest chord.

Hence, chord BC is a diameter of the circle as passes from the center O of the circle and its end points B,C lies on the circle so the statement is true.

To learn more on Circles click:

https://brainly.com/question/11833983

#SPJ7

Anna has 32 red beads, 16 blue beads, and 8 green beads. She wants to put an equal number of each kind of bead on necklaces she is making. How many of each kind of bead can Anna put on each necklace?
8
2.4 or 8
2 or 4
1 .2.4, or 8

Answers

Answer:

8 of them would probably fit on there


Colby and Layla sold pens for the writing club.
Layla sold two more than six times the number of pens that Colby sold
If p represents the number of pens that Colby sold, which algebraic expression represents the number of pens that Layla sold? Yes

Answers

ITS HSHAJAISISJDHDHDHDHWHWJ

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. They randomly assigned 20 participants to either a control group or a relaxation training group and recorded the change in number of headaches each group reported the week before training to the week after training (the control group received no training). Which statistical analysis would we perform to see whether the training helped the participants in that group as compared to the control group

Answers

A line graph or a chart table

The ratio of green houses to white houses on Winthrop Street is equal to
2 to 3. There are 60 white houses on Winthrop Street. How many green houses are there?
A 20 C 40
B 30 D 60

please show step by step

Answers

Answer:

C

Step-by-step explanation:

2:3 = x:60

3 → 60 (*20)

2*20=40

Answer:

40 green houses

Step-by-step explanation:

Because the ratio is given, you can use the criss-cross method.

2:3

?:60

All you do is multiply 60 by 2 then divide by 3

(60×2)/3=40

susan has a total of 31 books. amy has four less than seven times the number of books compared to susan. write an equation for this situation.

Answers

Answer:

31-(7×4)

Step-by-step explanation:

31-(7×4)

31-28

3

4. You bought 765 shares $45.23 and you sold it the next day for $46.01. What is your gross capital​

Answers

I honestly don't know the answer. Hope this helps..

Find the area of the composite figure.
A. 360 sq m
B. 720 sq m
C. 1000 sq m
D. 1152

Answers

Answer:

B 720 sq m

Step-by-step explanation:

A= 24^2 + 12^2

= 720 sq m

Explain what the diameter of a circle is. If you had the diameter of a circle, how could you solve for the circumference?

Answers

Answer:

The diameter cannot solve for the circumference, you need the Radius to do it.

Step-by-step explanation:

If you want to use the Diameter divide the Diameter by 2. Diameter=D Radius=R

So to find the circumference of a Circle, 2÷D=R. Now we do 2[tex]\pi[/tex]R. So now to find the answer we have to do 2x[tex]\pi[/tex]xR

Can someone please help me with these will give brainliest

Answers

1. multiply 1.6 by 2, resulting in 3.2
2. p < 4
Hope this helps!!

A figure was created using a tangle and a semicide. Use the ruler provided to measure the
dimensions of the triangle and the semidecle to the nearest centimeter. Which measurement is the closest to the area of the figure in square centimeters

Answers

And I’m sorry I don’t think you

2
Find the lateral area and the surface area of the cone. Keep answer in exact form.
12 ft
16 ft
lateral area
surface area -

Answers

Answer:

I think:

192 lateral area

56 surface area

If Im wroung Im very sorry

What is the volume of the container below? ​

Answers

Answer:

124 would be the volume............ but I don't see that

A cross section is made parallel to the bases of a right triangular prism. Which of the following statements is true regarding the area of the cross section and the area of the base?

The area of the cross section is less than the area of the base.
The area of the cross section is greater than the area of the base.
There is insufficient data to determine these area relationships.
The area of the cross section is equal to the area of the base.

Answers

Answer:

The area of the cross section is equal to the area of the base.

Step-by-step explanation:

NEED NOW I WILL MARK BRAINLYEISY
Mr. Asir wants to purchase a new home valued at $233,000.
He needs to borrow 50.7% of the home's value from the
bank. How much money doesMr. Asir need to borrow from
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A $1181
B $4596
$459,566
D $118,13

Answers

From the math I did the answer is $118131 so how I got it was 50.7% * 233000 and then I converted percent to decimal so I got p= 50.7%/100 = 0.507 then did 0.507 * 233000 and then got $118131 as my answer . I hope this helps

Please help I don’t have much time

Answers

Answer:

Second answer choice

Step-by-step explanation:

Good luck

Answer:

6/y8

Step-by-step explanation:

A circle has a diameter of 10cm. Find the Area of this circle. Use 3.14 for Pi.

Answers

Step-by-step explanation:

to find area

A = Pi x r^2

r = d/2 = 10/2 = 5

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