All categories

3 years ago

Y=2x-5 x+y=7 solve by elimination

Mathematics

2 answers:

marta [7]3 years ago

7 0

Answer:

x = 4

y = 3

Step-by-step explanation:

First, reorder the first equation to make it into the same format as the second equation:

y = 2x - 5

-2x + y = -5

Then, put the equations together:

-2x + y = -5

x + y = 7

Solve by elimination by multiplying the bottom equation by 2, then add the equations together and solve for y:

-2x + y = -5

2x + 2y = 14

3y = 9

y = 3

Then, plug in 3 as y into one of the equations to solve for x:

y = 2x - 5

3 = 2x - 5

8 = 2x

4 = x

So, the answer is x = 4 and y = 3

kenny6666 [7]3 years ago

6 0

Answer:

x=4

y=3

im 100% sure

You might be interested in

What is 3/15 in a decimal

Damm [24]

Well, since 3/15 can be simplified to 1/5 by dividing the top and the bottom by 3, you would just need to find the decimal of 1/5 which is much more commonly recognized. it's .2 (becasue 1/10 would be .1 and 1/5=2/10 so .1x2=.2)

4 0

2 years ago

Read 2 more answers

Use the box plot to explain what you know about the spread of this data set.

Lyrx [107]

Answer:

Interquartile Range = 34

Range = 55

Step-by-step explanation:

Max - Min = Range

75 - 20 = 55

Quartile 3 - Quartile 1 = IQR

68 - 34 = 34

5 0

2 years ago

If AB vector =(4 5) and PQ vector=(2p 10) are parallel to each other, find the value of p.

Sedaia [141]

Answer:

Answer:

They both have q+3/2p, so that means that 2PQ=CB and that means they are parallel to each other

Step-by-step explanation:

PQ=PA+QA

PQ=1/2(2q-p)+2/5*5p=q-1/2p+2p=q+3/2p

CB=2q+3p=2(q+3/2p)

Other explanation: It should be written like this PQ=q+3/2p and CB=2q+3p=2(q+3/2p) they are parallel bcs CB=2*PQ.

8 0

2 years ago

A bakery sells 3 muffins for every 5 pizza pies. The bakery sold a total of 24 muffins and pizza pies together. How many of each

MariettaO [177]

3+5=8 24÷8=3
3×3=9 muffins 5×3=15-pizza

I hope this helped!!!:)

5 0

3 years ago

Read 2 more answers

150 students were surveyed on how many text messages to send in a date for different devices. let X represent the number of stud

kakasveta [241]

Given that the total number of students that sent messages = 150 students

a) To obtain the equation to represent the number of students who send text messages, we will sum up the variables in the Venn diagram and equate it to 150.