2 years ago

Please help me solve the equation3x+10y=487x+4y=54

2 answers:

8 0

3x+10y=48
7x+4y=54

multiply the first equation by 2 and the 2nd equation by 5 to remove y
6x+20y=96
35x+20y=270
29x=174
x=6

substitute to any equation
7x+4y=54
42+4y=54
4y=12
y=3

the value of x is 6 and the value of y is 3

ser-zykov [4K]2 years ago

3 0

Answer: x=36/7

y=9/2

Step-by-step explanation:

1 Solve for yy in 3+10y=483+10y=48.

y=\frac{9}{2}y=

2 Substitute y=\frac{9}{2}y=

into 7x+4y=547x+4y=54.

7x+18=547x+18=54

3 Solve for xx in 7x+18=547x+18=54.

x=\frac{36}{7}x=

4 Therefore,

\begin{aligned}&x=\frac{36}{7}\\&y=\frac{9}{2}\end{aligned}

You might be interested in

What is the equation of the described circle? A) (x − 2)2 + (y + 3)2 = 58 B) (x − 2)2 + (y + 3)2 = 68 Eliminate C) (x + 2)2 + (y

SIZIF [17.4K]

Answer:

Step-by-step explanation:

8 0

3 years ago

What is the area of the given circle?

zhenek [66]

Answer:

50.26 is the area.

Hope it helps!!!

5 0

3 years ago

Gustavo's bicycle cost $171.18 after a sales tax of 8%. write and solve an equation to find the price of the bike before the sal

Kryger [21]

Let x = price of the bike before a sales tax.

The price after a sales tax of 8% is
x + 0.08x = 1.08x dollars

Because the price paid was $171.18, therefore
1.08x = 171.18
x = 171.18/1.08 = $158.50

Answer: 158.50

3 0

3 years ago

Write 9x - 8 as a verbal expression <br><br> Please the fast as possible!

Natalka [10]

Answer:

8 subtracted from the product of 9 and x

Hope this helps!

4 0

2 years ago

Can someone help me with 9,10,11 ?

sergij07 [2.7K]

I could be wrong but i graphed it out and 9 is C , 10 is A , and 11 is C Hopefully it's right

3 0

3 years ago