Consider the system of equations.


3x − y = 5,

2x + 3y = −15


Which value can the first equation be multiplied by to form opposite values on the y-term? A=-3 B= -2 C=2 D=3

The solution to the system of equations is .A= (-5,0) B= (5,0) C= (0,-5) D=(0,5)

Answers

Answer 1

Answer:

D and C

Step-by-step explanation:

Given the 2 equations

3x - y = 5 → (1)

2x + 3y = - 15 → (2)

Multiplying (1) by 3 and adding to (2) will eliminate the y- term

9x - 3y = 15 → (3)

Add (2) and (3) term by term to eliminate y

11x + 0 = 0

11x = 0 ⇒ x = 0

Substitute x = 0 into either of the 2 equations and solve for y

Substituting into (2)

2(0) + 3y = - 15

0 + 3y = - 15

3y = - 15 ( divide both sides by 3 )

y = - 5

solution is (0, - 5 )

Answer 2

Answer:

d and c my guy

Step-by-step explanation:

just did it


Related Questions

Last year Tyler used 60 feet of fencing to enclose a rectangular garden with an area of 200 ft². This year Tyler plans to use 120 feet of fencing to enclose a garden similar in shape. What will be the area of the garden?

Answers

Answer:

Area of new garden = 800 ft²

Step-by-step explanation:

Given:

Old fencing = Parameter of old garden = 60 ft

Area of old garden = 200 ft

Find:

Area of new garden if Parameter of new garden is 120 ft

Computation:

Assume;

Length of old garden = l

Width of old garden = b

So,

2[l + b] = 60

l + b = 30

l = 30 - b

Area of old garden = 200 ft

l x b = 200

So,

(30 - b)b = 200

b² - 30b + 200 = 0

b² - 20b - 10b + 200

b(b-20) - 10(b-20)

(b-20)(b-10)

So,

Width of old garden = 10 ft

Length of old garden = 20 ft

New parameter is double

So,

Width of new garden = 10 x 2 = 20 feet

Length of old garden = 20 x 2 = 40 feet

Area of new garden = l x b

Area of new garden = 20 x 40

Area of new garden = 800 ft²

HELP PLEASE IM ON A TIMER!!!
To buy a PS5 bundle, Amir borrowed $850 for 2 years at a simple interest rate of 2.5%. How much did he have to pay back in all? A.$42.50 B.85.00 C.$850 D.$892.50

Answers

Answer:

d.

Step-by-step explanation:

Answer:

D. $892.50

Step-by-step explanation:

First we find out the interest:

850 * 2.5% = 21.25

Since this is 2 years we multiply the interest by 2.

21.25 * 2 = 42.50

Now we add the interest with the amount borrowed.

850 + 42.50 = $892.50

So, the answer is $892.50 in total.

Hope this helps! :)

A man was 62 years old 18 years ago.what Will be his age in 6 years time​

Answers

Answer:

Step-by-step explanation:

As the man was 62 years old 18 years ols so first we have to add 18 to 62

=80

So, now we have to find his age after 6 years so we should just simply add 6 to 80

=86

He will be 86 years old.

Hope this helps you :-) :-)

A relation R={(4,3)(5,4)(6,5)}then write its inverse

Answers

Answer:

R'={(3,4)(4,5)(5,6)}

Step-by-step explanation:

R={(4,3)(5,4)(6,5)}

R'={(3,4)(4,5)(5,6)}

A university law school accepts 7 out of every 12 applicants. If the school accepted 686 students, find how many applications they received.
The school had applicants

Answers

Answer:

1176 applications

Step-by-step explanation:

7:12 accepted:applied

686 = 7

686 / 7 = 98

98 x 12 = 1176

please help ill give brainliest answer!

Answers

Answer:

x=54, acute scalene triangle

Step-by-step explanation:

1st Question:

Triangle SRT has two congruent sides, making it an isosceles triangle.

In isosceles triangles, the two base angles are congruent.

This means that in the question, ∠SRT equals ∠STR, so let's call them both x.

The sum of the interior angles of a triangle add to 180, so

∠RST+∠SRT+∠STR=180

Substitute ∠RST for 72 and ∠SRT+∠STR for x

72+2x=180

2x=108

x=54

2nd Question:

Again, using the sum of the interior angles of a triangle, we can say

42+88+∠DFE=180

∠DFE=50

All the angles in the triangle are less than 90°, meaning they are all acute. Also, none of the sides are labeled as congruent, so it is an acute scalene triangle

Someone help me please-

Answers

Answer:

Rectangle 11.59 sqft

Rectangle 36 sqft

Polygon 47.59 sqft

Step-by-step explanation:

91 is 10% of what number?
would i get the answer of : 91 already rounded to the nearest hundredths??? these formulas are confusing me help (using proportions to solve percent)

Answers

91 is 10 percent of 910

I need help I’m kind of stuck on this question

Answers

Answer:

10ft^2

Step-by-step explanation:

16in/4in =4ft for the length

10in/4in= 2.5ft for the width

so 4ft x 2.5ft =10ft^2

so 10ft^2

Some candy bars are on a plate. Each candy bar is the same size. Nine friends are going to share the candy bars equally. Each friend gets one-half a candy bar. How many candy bars are on the plate? Between what two whole numbers does the amount of candy bars shared lie? Show all your mathematical thinking.

Answers

Step-by-step explanation:

How many candy bars are on the plate?

1 and a half multiplied by 9 = 13 and a half

There are 13 and a half/13.5 candy bars are on the plate.

Between what two whole numbers does the amount of candy bars shared lie?

13.5 lies between 13 and 14.

Hope it helps!!!!

what is question a????

Answers

Answer:

0=3 1=5 3=9

Step-by-step explanation:

7/9+5/9 as a fraction in simplest form

Answers

Step 1

Write all numerators above the common denominator
7+5/9

Step 2

Add the numbers
12/9

Step 3

Reduce the fraction with 3

4/3

Your answer should be 4/3

Or 1 1/3 , 1.3

1 3/9 is da answerrr

10 POINTS!!! NO LINKS!! I WILL REPORT BUT PLEASE SOMEONE HELP ME The table below shows the number of students in four schools with grade
point averages in various ranges. The grade point averages of the students in
which school represent a U-shaped distribution?

Answers

Answer:

School C.

Step-by-step explanation:

The answer is school C. A u-shaped distribution would have to have values that when plotted, make a "u". In this case, the first and last values have to be the highest, the second and fourth values have to be in the "middle" and the third value has to be at the bottom. This is the case for school C.

Answer:

B. School C

Step-by-step explanation:

Having a U-shaped distribution means that the school would have the least number in the middle value/values and the most at the ends.

School C exhibits this trend because it has the most on the outermost ranges (82 for between 1.5 and 2, and 78 for between 3.5 and 4.0), as well as the least number for the middle value (26 for 2.5-3.0

The numbers inbetween also follow the trend, as you can see if you read down the column of school C, the numbers decrease as you get to 2.5-3.0 and increase again to 4.0

Hope this helped!

bestieeee- please help


:)

Answers

Answer:

94 cups

Step-by-step explanation:

5 gals = 80 cups; 14 cups + 80 cups = 94 cups

Graph points A(-1, -1), B(-1, 3) and C(3, 2) on the coordinate plane. What is the area of triangle ABC? A) 7 square units B) 8 square units C) 14 square units D) 16 square units

Answers

Answer:

8 square units is the answer

PLEASE HURRY I WILL GIVE BRAINLIEST!!!!!!
Jessie borrowed $15,000 for 15 years to make some improvements to his house. If he repaid a total of 20,625 at what simple interest rate does Jessie borrow the money? A.1.5% B.1.75% C.2.25% D.2.5%

Answers

Answer:

C

Step-by-step explanation:

Answer:

The answer is C, 2.25%

Step-by-step explanation:

Hope it helps!!:)

1. A baseball coach graphs some data and finds the line of
best fit. The equation for the line of best fit is
y = 0.32x - 20.51, where x is the number of times at bat and
y is the number of hits.
How many hits should he expect from a player who is at bat
175 times?
A) 35 hits
B) 49 hits
C) 609 hits
D) 62 hits

Answers

Answer:

It's answer B, 49 hits. I got it right

its 49 hits because of the graph

Will mark brainliest

Answers

Answer: A) multiply the input by 6.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

12÷2=6

36÷6=6

48÷8=6

54÷9=6

72÷12=6

so that means you have to multiply the input by 6.

(15 point) Which set of ordered pairs are solutions to the equation y = 10x?

Answers

Answer:

Blue, yellow and green.

Step-by-step explanation:

ANSWER FOR BRAINLIEST:
The mean of Tom’s scores on 5 tests was 77.4%. The scores on his first four tests were 88, 77, 70, and 72. What was Tom’s score on his fifth test?

Answers

Tom got 80 on the fifth test

Answer:

Tom got 80% on his fifth test

please help ive been stuck on this all day math help pls

Answers

Answer:

d ... or c

Step-by-step explanation:

SOMEONE PLZ HELP ME

Answers

(0, infinity)

                                   I hope it helps

Khan academy again, please help

Answers

I think the answer is 30

Answer:

32

Step-by-step explanation:

lol what it's the same exact question again

6 x 10 = 60

60 - 2 - 6 - 20 = 32

can someone help me asap​

Answers

Answer:

a) hundreds

b) tens

c) hundreds

d) hundreds

Answer:

This is easy!!

Step-by-step explanation:

1. hundreds

2. tens

3. hundreds

4. hundreds

Hope this Helps!!

A rectangle with area
126
square inches has a length that is four less than two times the width. Find the length and the width of the rectangle.

Answers

Answer:

Step-by-step explanation

width is 9. length is 14

I agree with the person on top have a wonderful day:)

Four friends are told that the average (mean) of their grades for their favorite class is 84.5%.



Anthony got 86%, Jasmine got 92%, and Kaitlyn got 70%.

Jonathan's grade was not revealed.
What grade did Jonathan get?
PLEASE HELP SOON

Answers

Multiply the average by number of people:

84.5 x 4 = 338

This means the total of the 4 grades need to equal 338

To find Jonathan’s grade subtract the other 3 grades from 338:

338 - 86 - 92 -70 = 90

Jonathan’s grade was 90

Help!! I’ll give brainliest!

Answers

Answer:

d

Step-by-step explanation:

stat edit but just use the formula y2-y1/x2-x1

Help help help help help help help

Answers

Answer:

Negative

Positive

Negative

Positive

Step-by-step explanation:

AnswerNegative ,Positive, Negative, Positive

Step-by-step explanation:

Which set of integers is in order from least to greatest? a. 1, -2, 3, 4, -5. b. -5, 4, 3, -2, 1. c. -2, -5, 1, 3, 4 d. -5, -2, 1, 3, 4.

Answers

Answer:

Step-by-step explanation:

Negative numbers have the least value and (-1) is the greatest negative value

So, d is arranged in least to greatest order

d) -5 , - 2 , 1 , 3 , 4

Answer:

The answer is D.

Step-by-step explanation:

D is the one that has the order from least to greatest.

What is the slope of the line through (–5,2) and (6,7) in the standard (x,y) coordinate plane?

9
9

5
5

-5
-5

5
11
5 over 11


5
11

Answers

Step-by-step explanation:

[tex]slope = \frac{\triangle \: y}{\triangle \: x} \\ = \frac{(7 - 2)}{(6 - ( - 5))} \\ = \frac{5}{11} \\ slope = (5 ,11)[/tex]

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