Mathematics High School

Solve the system of linear equations by substitution.
3x + y = -3 -2x + y =7

Answers

Answer 1
both equations are equal to 0
Answer 2

Answer:

(-2, 3)

Step-by-step explanation:

First solve one equation for y:

[tex]-2x+y=7\\y=7+2x[/tex]

Now we can substitute this equation into the other one:

[tex]3x+7+2x=-3[/tex]

Solve for x:

[tex]x=-2[/tex]

Now substitute this value into the equation [tex]y=7+2x[/tex]:

[tex]y=7+2x(-2)[/tex]

Solve for y:

[tex]7=3[/tex]

Now your solution is (-2,3)

Hope this helps! :)

Related Questions

In the last 40 days, Mr. Neptune's newspaper has been delivered late 6 times. What is the experimental probability that it will be delivered late tomorrow?

Answers

Answer:

15%

Step-by-step explanation:

The reason for this is simply because if you take 40 and 6, turn it into a fraction, then turn it into a percentage, it turns out to be 15%

Question 1. If the perimeter of Rectangle ABCD is 34y+2. What is the width?

Question 2. What is the area of Rectangle ABCD in terms of y?

Question 3. If the perimeter of the rectangle is 70. What is it’s area?

Question 4. What are the length and width of the rectangle?

Answers

Answer:

Question 1. If the perimeter of Rectangle ABCD is 34y+2. What is the width?

Question 2. What is the area of Rectangle ABCD in terms of y?

Question 3. If the perimeter of the rectangle is 70. What is it’s area?

Question 4. What are the length and width of the rectangle?

Kevin pays $12.95 for a text messaging service plus $0.07 for each text message he sends. Which of the following equations could be used to represent the total cost, y, when x represents the number of text messages sent?

Answers

Answer:

y=0.07x + 12.95

Step-by-step explanation:

The only coins that Kyle has are dimes and quarters. He has a total of 30 coins. The total value of Kyles coins is $4.80. Which of the following systems of equations can be used to find the number of dimes, d, and the number of quarters, q, kyle has?

Answers

Try 12 quarters = $3

Try 18 dimes = $1.80

30 coins check

$4.80 check

PLZ mark brainiest

help plssss I will do anythinv

Answers

the answer is 3 feet 7 inches

Evaluate the function. g(x) = 3x^2 – 2x + 5 Find f(2)​

Answers

Answer:

13

Step-by-step explanation:

Replace X with 2

Evaluate the function. g(x) = 3x^2 – 2x + 5 Find f(2)​

g(x) = 3(2)^2 – 2(2) + 5

Next conduct PEMDAS

Exponents are first so solve 2^2 which is 2 x 2 = 4

g(x) = 3(4) – 2(2) + 5

Next step is multiplication multiply 3 x 4 and 2x2

g(x) = 12 – 4 + 5

conduct adding and subtracting left from right

g(x) = 13

What is an
equation of the line that passes through the points (-6,5) and (6, 7)?

Answers

Answer:

Y= -x - 1

Step-by-step explanation:

das it   :->

Help I’m so close and I really wanna sleep ;-;

Answers

Answer:

8

Step-by-step explanation:

Preety Sure is 8

Answer:

8

Step-by-step explanation:

Since it starts from 6, count by +1 till you get at the blue dot

Amanda buys 2 1/2 pounds of lemons. The Lemons were $2.00 per pound. How much did Amanda spend on lemons (give an explanation on what you did and how your approach was accurate)

Answers

Answer:

1.25

Step-by-step explanation:

if you divided it and then simplified you would have your answer

What’s the answer laaalalalalalaaaaaa

Answers

Answer: The slope is -1/2, the y-intercept is 4, and the equation is y=-1/2x+4

Step-by-step explanation:

What is the value of the expression below when
y=9 and z=3?
10y−7z

Answers

10y−7z

Plug in the numbers for y and z.

(10)(9)−(7)(3)

= 69

Answer:

69

Step-by-step explanation:

10y-7z

Plug in y and z

10(9)-7(3)

Solve using order of operations

90-21=69

The rectangular top of Tonya's kitchen table has a length of 72 Inches and a width of 28 inches. What is the area of the top of Tonya's table in square inches?
FO720 square inches
G.O 200 square inches
H. 2,016 square inches
J. O 100 square inches

Answers

Answer:

2016 square inches

Step-by-step explanation:

Area is length x width. Length is 28. Width is 72. 28 x 72 = 2016

Please help don’t know answer

Answers

Answer: y= X+3

Step-by-step explanation:

slope intercept form is y=mx+b where m is the slope and b is the y- intercept

How many times does 3/4 go into 1 1/2

Answers

Answer:

2

Step-by-step explanation:

In order to divide these fractions, you must turn the mixed number into a fraction like below:

1 1/2 = (2 x 1 + 1) / 2 = 3/2

In order to divide fractions, you must multiply by the reciprocal of the denominator. In this case, you are dividing (3/2) / (3/4) and 3/4 is the denominator.

3/2 * 4/3 = 12/6 = 2. Your answer is 2.

The population of the United States in 1990 was 85,455,930 in 2003 it was 104,538,348 what was the percent change

Answers

Answer:

22.33%

Step-by-step explanation:

22.33% hope this helped!

2.) Add unlike fractions using the butterfly method.
1 point
c) of the teacups in Lily's Tea Shop, 1/5 are teal and another 1/10 are yellow. What fraction
of the teacups are either teal or yellow?
3/10
5/10
7/10
O 1/10

Answers

Answer:

3/10

Step-by-step explanation:

1/5=2/10

2/10+1/10=3/10

Answer:

ITS 3/10 AND CAN SOMEONE PLS ANSWER MY MOST RECENT QUESTION.

(with steps please)
Your next Pre-Algebra test is worth 93 points and contains 38 multiple choice and short answer problems. Each
multiple choice problem is worth two points and each short answer is worth three points. How many of each type of
problem is on the test?

Answers

Answer:

21 of multiple choice and 17 of short answer questions

Step-by-step explanation:

Multiple choice = mShort answer = s

Equations:

m + s = 382m + 3s = 93

Solve for s by eliminating m. Subtract the double of the first equation from the second one:

2m + 3s - 2(m + s) = 93 - 2(38)3s - 2s = 93 - 76s = 17

Find the value of m:

m = 38 - 17 = 21

Richard learned a total of 30 appetizer recipes over the course of 6 weeks of culinary school. After 7 weeks of culinary school, how many total appetizer recipes will Richard know? Assume the relationship is directly proportional.

Answers

30/6=5
He learns 5 recipes a weeks so 7x5=35
Richard will know 35 recipes in all

can't figure out this problem can anyone help if so thank you

Answers

Answer:

10th term of the sequence = 0.537

Step-by-step explanation:

First three terms of the sequence are → 5, 4, [tex]\frac{16}{5}[/tex]..........

Ratio of 2nd and 1st term of the sequence = [tex]\frac{4}{5}[/tex]

Ratio of 3rd and 2nd term of the sequence = [tex]\frac{\frac{16}{5} }{4}[/tex]

                                                                        = [tex]\frac{4}{5}[/tex]

Therefore, ratio between every successive term to the previous term is common.

Common ratio 'r' = [tex]\frac{4}{5}[/tex]

First term of the sequence 'a' = 5

nth term of a geometric sequence = [tex]a(r)^n[/tex]

Therefore, nth term of the given term will be  [tex]T_n=5(\frac{4}{5})^n[/tex]

Now we have to find the 10 term of the given sequence.

For n = 10,

[tex]T_{10}=5(\frac{4}{5})^{10}[/tex]

      = 0.53687

      ≈ 0.537

Therefore, 10th term of the sequence is 0.537

3 3/8 divided by 4 1/2?

Answers

Answer:

0.75

Step-by-step explanation:

Hope this helps

Answer:

3/4

Step-by-step explanation:

3 3/8 divided by 4 1/2

Turn into improper fraction

27/8 ÷ 9/2

Cross multiply

27/8 × 2/9

you can simply to

3/4×1/1= 3/4

At what rate will a snail travel if it moves 30 cm in 5 seconds

Answers

Answer:

6cm per second

Step-by-step explanation:

30 divided by 5 is 6

Answer:

hourly ot minute

Step-by-step explanation:

rrrrrrrrrffttt

Estimate each sale price for each item.$8.60 and $40.60

Answers

Answer:

is that even the full answer because I don't know if that is

Use triangles ABC and A'B'C' for Exercise. Use the coordinates to find the lengths of the sides.
please help is due in 20 minutes

Answers

Answer:

AB = 2

BC = 2

A'B' = 6

B'C' = 6

Step-by-step explanation:

Help me please BRAINLIEST In the drawing below, ABC is similar to NPM. Which ratio correctly represents the relationship between the lengths of the sides of the triangles?
a, b, c, or d please help me thank you

Answers

Answer: A

Step-by-step explanation:

Find the magnitude of the vector.
17i – 39j

Answers

I don’t get the question

10. If the triangle has a perimeter
of 33 inches and has sides
measuring x + 2, X-6, and 2x + 1,
find the value of x.

Answers

Download Cymath it help you

Common factor: 3x^2y^2z^2+5xyz—8x^2

Answers

Answer:

x

Step-by-step explanation:

Find the prime factors of each term in order to find the greatest common factor (GCF).

What is the slope of the line shown?

Answers

Answer:

The slope of the line shown is 2

Hey Everyone I was asking anyone can help with this problem it would really appreciated.

Answers

Answer:

angle G = angle I

HGI=HIJ by RHS fact

HGI=HIJ corresponding angles are alwyas congurrent

Distribute: -1/2(10b + 18)
please i need this before 8:00pm

Answers

Answer:

-5b - 9

Step-by-step explanation:

-1/2 (10b) = -5b

-1/2 (18) = -9

Other Questions
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There are two types of jurisdiction, ______________________________, which deals with where the case happened, and __________________________, which deals with the type of case it is. 5) _____________________________ consider evidence, hear testimony and decide issues of fact and law. 6) ______________________________ do not consider evidence or hear testimony and only concerned with issues of law. 7) Questions about what happened in a case that are resolved by the testimony and evidence are called ___________________________. The __________________ usually determines these. 8) _____________________________________ are resolved by the judge. 9) In Florida there the trial courts are called _______________________________ and ________________________________. 10) In Florida, misdemeanor cases start in _______________________________. 11) In Florida, civil cases where the parties are arguing about more than $15,000 start in _______________________________________. 12) If you lose at the trial court in Florida you can appeal to _______________________. 13) The highest court in Florida is called the ______________________________. 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