-x - 7y = 18
4x + 7y = -30
How can you order a ladder?

Answers

Answer 1

Answer: I can solve
add them equations

-x-7y=18
4x+7y=-30 +
3x+0y=-12

3x=-12
divide 3
x=-4
sub
-x-7y=18
-(-4)-7y=18
4-7y=18
minus 4
-7y=14
dividd e-7
y=-2

x=-4
y=-2
(-4,-2)

Related Questions

What is ?5*1 3/5 A.5 2/5 B. 5 3/5 C. 8 D. 15
Which term refers to a statistical value that is a measure of the spread or variation in the scores in a given data set?A. DispersionB. Independent Variable C. Dependent Variable D. Central Tendency
Which of the following possibilities will form a triangle?a. side = 15 cm, side = 7 cm, side = 7 cm b. side = 15 cm, side = 7 cm, side = 9 cm c. side = 14 cm, side = 6 cm, side = 7 cm d. side = 14 cm, side = 6 cm, side = 8 cm
Plz help. Thank you!
31,50 is 42% os what number

What is the difference between 2/3 and 1/4

Answers

The difference between the numbers 2/3 and 1/4 will be;

⇒ 5 / 12

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

Two numbers are 2/3 and 1/4.

Now,

The difference between the numbers 2/3 and 1/4 will be;

⇒ 2/3 - 1/4 = (8 - 3) / 12

= 5 / 12

Thus, The difference between the numbers 2/3 and 1/4 will be;

⇒ 5 / 12

Learn more about the subtraction visit:

brainly.com/question/28467694

#SPJ2

It's 5/12, because if you multiply 2/3 by 4/4 you get 8/12, and if you multiply 1/4 by 3/3 its 3/12, subtract the numerators 3 from 8 and you get 5.

A bag contains 40 marbles, 4 of which are blue, 10 are red, 25 are green, and 1 is purple. Shawna takes a marble out of the bag, records the color, and returns it to the bag. How many green marbles should she expect after 400 trials?

Answers

the answer is 25/400 because it is 25 green marble and it 400 in all

Answer:

The answer is 250

Step-by-step explanation:

In what situation can you use multiplication to find equivalent fractions to a given fraction

Answers

well this we did in fourth grade so what if it was 2.4 it would be 4.8

Denise wants to find out how the steepness of a hill’s slope affects the amount of soil that erodes from it. She will use soil, a long pan, and several 4-inch-tall wooden blocks to build a model hillside. She will use a watering can to simulate rainfall. In her experiment, which factor should be Denise’s variable?the type of soil with which she fills the pan
the number of blocks holding up the end of the pan
the amount of water she pours on the model hillside
the location she uses to test her model

Answers

the variable would be the number of blocks holding up the pan because the variable is what changes.

1. If m=3 and b=10, what is the equation in slope-intercept form? 2. If m=-7 and b=3, what is the equation in slope-intercept form?

3. If m=1/2 and b=2, what is the equation in slope-intercept form?

Hint the form of the equation in slope-intercept form is y=mx+b

Answers

1. Y= 3x+10
2. Y= -7x+3
3. Y= 1/2x+2

1. y=3x+10
2. y=-7x+3
3. y=1/2x+2

em saves at least 20% of what she earned for each week.is she earns $140 each week for 4 weeks wich inequality describes the total amount she saves

Answers

percent means parts out of 100
20%=20/100=2/10=1/5

20% of what she earned earned per week
'of' means multiply
20% of what she earned per week means
1/5 times what she earned per week

140 per week earned
1/5 of per week=saved
1/5 of 140=1/5 times 140=140/5=28

she saved this for 4 weeks
at least 28 saved per week for 4 weeks=28 times 4=102
she saved at least102 total
saved>$102

First, what you would do is multiply 140 and 20%. Which would give you: 28

Then you would multiply 28 by 4 and get 112

Hope this helps!!(:

Other Questions

Help!!! I don’t get this :(

What is 32.7 times 10

Jill fish weight 8 times as much as her parakeet . Together they weigh 63 ounces how much does Jill fish weigh

16/18 into simplest form