Ask question

Ask question

All categories

3 years ago

12

Which of the following ordered pairs represents the solution to the system given below?

2 answers:

castortr0y [4]3 years ago

8 0

X − 4y = 7
5x + 9y = 6

5x − 20y = 35 //1st * 5
5x + 9y = 6

5x +9y - 5x + 20y = 6 - 35 //2nd - 1st
5x + 9y = 6

29y=-29
5x=6-9y

y=-1 //1st : 29
5x=6-9*(-1)

y=-1
x=15:5 //2nd : 5

y=-1
x=3

check:
for x=3 and y=-1 there is:
x − 4y = 7 is 3 − 4*(-1) = 7 is 7=7 ok
5x + 9y = 6 is 15-9=6 is 6=6 ok

answer: (3;-1) represents the solution.

Law Incorporation [45]3 years ago

3 0

Answer:

It’s 3,-1

Step-by-step explanation:

You have to plug in the points u can use a calculator or work it by hand but I did it on the calculator and that’s what I got

You might be interested in

Estimate 51.62+36.557 by first rounding each number to the nearest whole number

Ira Lisetskai [31]

Answer:

89

Step-by-step explanation:

51.62=52

36.557=37

----------------

52+37=89

8 0

3 years ago

The sum is not divisible by 5 and not divisible by 6.

PilotLPTM [1.2K]

<h2>SO. ?????????????????????</h2>

5 0

3 years ago

At this weekend's football game, 15 out of the first 50 people who enter the field were not wearing hats. If this sample is repr

yulyashka [42]

250/50 = 5

15 * 5 = 75

ANSWER:
C. 75 people

4 0

3 years ago

Read 2 more answers

a jacket originally sold for $45. this week it went on sale for 20% off. what is the discount and what is the sales price?

Strike441 [17]

Answer:

discount = 9

new price = 36

Step-by-step explanation:

The discount is the price times the discount percent

45 * 20%

Change to decimal form

45*.20

9

The new price is the original price minus the discount

45-9 = 36

4 0

3 years ago

For what values of x is the inequality 2/3 + x/3 >1 true?

Travka [436]

Answer:

B

Step-by-step explanation:

$\frac{2}{3}$ + $\frac{x}{3}$ > 1 ( multiply through by 3 to clear the fractions )

2 + x > 3 ( subtract 2 from both sides )

x > 1

6 0

3 years ago