All categories

3 years ago

X=5y+41 X+3y=-15 Substitution method

2 answers:

3 0

you substitute 5y+41 for x and get 5y+41+3y=-15 then you simplify by doing 8y+41=-51 subtract 41 from each side and divide by 8 to get y alone. That's how you get 11.5 for your answer.

sweet [91]3 years ago

3 0

X = 5y + 41
x + 3y = -15

(5y + 41) + 3y = -15
(5y + 3y) + 41 = -15
 8y + 41 = -15
 - 41 - 41
 8y = -56
 8 8
 y = -7
x = 5(-7) + 41
x = -35 + 41
x = 6
(x, y) = (6, -7)

You might be interested in

On Monday, Avi walked from his home to the school track and walked 4 laps around the track for a total of 3.5 miles. On Saturday

anyanavicka [17]

Answer:

3.5 = x + 4*y

4 = 2x + 2*y

Step-by-step explanation:

The total distance ran by Avi is the sum of the distance from his house to the track, and the total distance ran in the tracks (that is, the distance of one lap times the number of laps Avi ran).

If we call 'd' the total distance and 'k' the number of laps, we have the equation:

d = x + k*y

So with the data given, we can have the following system:

3.5 = x + 4*y

4 = 2x + 2*y

In the second equation, we have 2x because Avi ran from his home to the track, and in the end ran back home, so Avi ran the distance x two times.

4 0

3 years ago

A kg of aluminum earns a collector $2.50 at the recycling center. If I collect 14 kg. Of aluminum cans, how much money will I ea

saul85 [17]

Answer:

$ 35

Step-by-step explanation:

$\frac{1}{14} = \frac{2.5}{x}$

$x = 14 \times 2.5 \\ \\ x = 35$

8 0

3 years ago

Read 2 more answers

Find the area of the shaded region in square units

Kaylis [27]

Answer:

There is nothing there...

Step-by-step explanation:

I wish I could help you but you need to put in a picture or diagram

5 0

3 years ago

A student builds a model of a high-rise for a diorama for an architecture class. The model is a perfect cube and the total volum

anzhelika [568]

Volume = length x width x height

Thus, you need to find the cubic root of 500....the number that when multiplied by itself three times = 500,

There are different ways to write this. $\sqrt[3]{500}$
= $\sqrt[3]{125 * 4}$
= 5 $\sqrt[3]{4}$

You can also show it as a decimal using a calculator = 7.94

8 0

3 years ago

(Who ever Answers the question for this lil guy> ʕ •ᴥ•ʔ, Gets brainliest!!)

Valentin [98]

Answer:

Once upon a time i was on brainly. I was asked to make a story and solve 15 divided by 1/9 so thats what this is :D Obviously I would do better stories on topics not math related but I thought it would do. I Used 15x1/9 to solve the equation and my helpful calculator UvU Thats when I got the ugly number of 1.66666667 as my answer I was annoyed but it would have to do. I finished typing these last words and submitted Hoping that i would get brainliest and give it away UvU

Step-by-step explanation:

8 0

3 years ago