All categories

3 years ago

If 3x + 4y = 15, find an equation solving for x

Mathematics

1 answer:

nikklg [1K]3 years ago

5 0

Answer:

x=105

Step-by-step explanation:

3x+4y=15

3x+4y=7

7*15=105

x= 105

i really hopes this helps i did this in last semester

You might be interested in

What is the measurement of v

kirill [66]

The answer is 58 degrees.

7 0

3 years ago

Read 2 more answers

There are 740 tickets purchased for a Major League Baseball game. The lower reserved tickets cost $9.50 and the upper reserve co

artcher [175]

375 lower reserved tickets were purchased and 365 upper reserved tickets were purchased

Step-by-step explanation:

Let x be the number lower reserved tickets

and

y be the number of upper reserved tickets

Then according to given statements

$x+y = 740\ \ \ \ Eqn\ 1\\9.50x+8y = 6482.50\ \ \ \ Eqn\ 2$

From equation 1:

$x = 740-y$

Putting in equation 2

$9.5(740-y)+8y = 6482.50\\7030-9.5y+8y = 6482.50\\7030-1.5y = 6482.50$

Subtracting 7030 from both sides

$7030-7030-1.5y = 6482.50-7030\\-1.5y=-547.5$

Dividing both sides by -1.5

$\frac{-1.5y}{-1.5} = \frac{-547.5}{-1.5}\\y = 365$

Putting y = 365 in equation 1

$x+365 = 740\\x = 740 - 365\\x = 375$

Hence,

375 lower reserved tickets were purchased and 365 upper reserved tickets were purchased

Keywords: Linear equations, Variables

Learn more about linear equations at:

#LearnwithBrainly

3 0

3 years ago

Con 5,2l tenemos para 100km, con 60l para cuantos km tenemos?

liraira [26]

Answer:

Step-by-step explanation:

7 0

2 years ago

9. Ms. Guzman started a 950-mile trip with a full tank of gas. Her 12-

ratelena [41]

Answer:

37.5 miles per gallon

Step-by-step explanation:

450/12 =37.5

this is around about how much it is

6 0

3 years ago

Read 2 more answers

Which of the following points lie in the solution set to the following system of inequalities?

Lorico [155]

All you have to do is try both of the equations by filling in the variables with the choices.

-5 > -3 (2) + 3
-5 > -5 + 3
-5 > -2

-5 > (2) + 2
-5 > 4
So, this does not work.
--------------------------------------------
5 > -3 (-2) + 3
5 > 5 + 3
5 > 8

5 > (-2) + 2
5 > 0
So, this does not work.
-------------------------------------------
5 > -3 (2) + 3
5 > -5 + 3
5 > -2

5 > 2 + 2
5 > 4
So, this works.
-----------------------------
-5 > -3 (-2) + 3
-5 > 5 + 3
-5 > 8

-5 > (-2) + 2
-5 > 0
So, this does not work.

The answer would be C.

I hope this helps!

3 0

3 years ago