2 years ago

2x+y=13 x+4y=17 Solve with elimination

Mathematics

1 answer:

OverLord2011 [107]2 years ago

3 0

Answer:

X=5 Y=3

Step-by-step explanation:

2x+y=13

2(x+4y=17)

Both the 2x's cancel out which leaves you with -3y=-21 which equals 3. Then plug the Y back in to get 5 for X.

You might be interested in

If g(x) = 3/4 x + 2, find g(-12).

scZoUnD [109]

Answer:

(-7)

Step-by-step explanation:

just plug in the number in the x place to solve

4 0

3 years ago

Sylvie is going on vacation. She has already driven 60 miles in one hour. Her average speed for the rest of the trip is 57 miles

Rina8888 [55]

Well you do 57 time 7 and get 399 and then it says how far will she have driven so you would add the 60 and get 459 miles.

6 0

2 years ago

Read 2 more answers

What is the answer to x/-3 + 5 = 12

Mariana [72]

Answer:

Step-by-step explanation:

6 0

3 years ago

Which of the following is a correct tangent ratio for the figure?

Ludmilka [50]

Answer:

tan 76 = 24/8

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

tan theta = opp /adj

tan 76 = 24/8

3 0

2 years ago

Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchas

Norma-Jean [14]

Answer: The required number of books that Ruben had before purchases is 50.

Step-by-step explanation: Given that Ruben bought 6 new books for his collection that increased his collection by 12%.

We are to find the number of books that Ruben had before purchases.

Let x denotes the number of books that Ruben had before purchases.

Then, according to the given information, we have

$x+6=x+12\%\times x\\\\\\\Rightarrow 6=\dfrac{12}{100}x\\\\\\\Rightarrow 6=\dfrac{3x}{25}\\\\\\\Rightarrow 3x=150\\\\\Rightarrow x=\dfrac{150}{3}\\\\\Rightarrow x=50.$

Thus, the required number of books that Ruben had before purchases is 50.

4 0

3 years ago