Mathematics : asked on alicciardone01

24.12.2020

-2x - y = -9

5x -2y = 18
Solve as a whole number

0

Step-by-step answer

09.07.2023, solved by verified expert

Bibin (Bibi) P B

Biology, Geography, Q&A Expert

16 685 answers

Unlock the full answer

x = 4, y = 1

(4, 1)

Step-by-step explanation:

-2x - y = -9

5x -2y = 18

-2x - y = -9

+2x +2x

-y = 2x - 9

/-1 /-1

y = -2x + 9

5x -2y = 18

5x - 2(-2x + 9) = 18

5x + 4x - 18 = 18

9x - 18 = 18

+ 18 + 18

9x = 36

/9 /9

x = 4

Now, we solve for y:

-2(4) - y = -9

-8 - y = -9

+ 8 +8

-y = -1

/-1 /-1

y = 1

(x, y) -> (4, 1)

Hope this helps!

-2x - y = -9 5x -2y = 18 Solve as a whole number, №18009978, 24.12.2020 00:16

It is was helpful?

Helpful Useless

Faq

Mathematics

Imran is paid ?286 per week Every week he puts 20% of his wage into a savings account How much does he put into his savings each week

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown

Step-by-step answer

P Answered by PhD

Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram

Mathematics

An ice cream shop offers 5 different flavors of ice cream and 9 different toppings. How many choices are possible for a single serving of ice cream with one topping?

Step-by-step answer

P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45

Mathematics

Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

An online media service offers video and music downloads. Each download of a song costs $1. Each download of a video costs 5 times as much as the song download. You have a credit of $70. How many songs can you purchase after buying 12 videos?

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

Use the X method to find the solutions of6x2 + 2x – 20 = 0.

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

A 4300-N force from a car s engines produces an acceleration of 3.3 m/s2. What is the mass of the car? A. 4300 kg B. 1300 kg C. 14,000 kg D. 390 kg

Step-by-step answer

P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

=4300/3.3

=1303.03kg

Mathematics

If a salesperson makes 6% commission, how much would they make from a $1,800 sale?

Step-by-step answer

P Answered by PhD

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

Mathematics

If a salesperson makes 6% commission, how much would they make from a $1,800 sale?

Step-by-step answer

P Answered by PhD

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

Mathematics

Nick received an 82.5% on his math test. How many questions did he get right if there were a total of 40?

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

free Ask question

Today we have helped

2 335 students

just now

Computers and Technology

Write a program that reads in ten numbers from the user and displays the distinct numbers. If a number entered by the user appears multiple times, your program needs to filter the repeated numbers and therefore displaying the repeated numbers only once. For example, if the user enters the number 1, 4, 6, 1, 8, 4, 2, 1, 3,9 then the output of your program should be: 1, 4, 6, 8, 2, 3, 9.

p Answered by PhD

just now

Physics

3. One effective method for coping with change is using: Recall

Revisitation

Reminiscence

Reminding

p Answered by PhD

1 minute ago

Mathematics

A Starbucks manager has x pounds of coffee in stock. He sells 15 pounds and then receives a shipment weighing 2y pounds. Which expression represents the weight of the

has?

Highlight

X-15-2y

O X+ 15 + 2y

O

x + 15 - 26

O

X - 15 + 2y

p Answered by PhD

1 minute ago

Mathematics

The area (A) of a rectangle varies jointly as the length (l) and the width (w), and whose A = 60 sq. cm when l = 4 cm and w = 3 cm. What is the area of rectangle if the length is 6 cm and whose width is 3 cm?

p Answered by PhD

2 minutes ago

Chemistry

An object with a mass of 4.0 kg has a force of 12.0 newtons applied to it. What is the resultant acceleration of the object? Help me?? :(

p Answered by PhD

Get help with homework

What is Studen

Studen helps you with homework in two ways:

Our base includes complete solutions from various experts

chat

Leave a question

Studen will automatically choose an expert for you.

directly

We have more than 5 000 verified experienced expert