3 years ago

Using elimination (add or sub) find the solution to the following system of equations 5x+ 3y=9 2x -3y=5

1 answer:

8 0

5x+3y=9
2x-3y=5

5x+2x=9+5
7x=14
14/7x= 2
x=2

sub it in so you get y

5(2)+3y=9
10+3y=9 (-10 to get rid of it)
3y=-1
3y/-1= - 1/3

x= 2 y= - 1/3

You might be interested in

Sierra buys lunch in the cafeteria everyday. Lunch costs $2.00 each day, how much did she spend after 5 days.

Tcecarenko [31]

Answer:

$2.00 each day so $2.00 x 5 = $10

4 0

1 year ago

The scale on a city map is 3/4 inch represents 1/8 mile.How many inches per mile are represented by the scale on the map

Sonja [21]

3/4 inch represents 1/8 mile, that means:

1/8 mile represented by 3/4 inch

1 mile will be : (3/4) inch ÷ (1/8)

= 3/4 × 8/1 = 6

1mile will be represented by 6 inches

So on the map it is 6 inches per mile

8 0

3 years ago

D. 9x-X+5x =260<br> Bx= 200

yan [13]

Answer:

We first must solve for x

$9x-x+5x=260\\13x=260\\x=30$

When we have x, we put it in to the second equation

$Bx=200\\\\B=\frac{200}{x} \\\\B=\frac{200}{30}\\\\B=\frac{20}{3}$

8 0

2 years ago

100 points plz Simplify using i. √-15√-4

Charra [1.4K]

That Equals = -60i. Hope im right :) Good luck

8 0

3 years ago

Read 2 more answers

he local newspaper has letters to the editor from 30 people. If this number represents 2% of all of the newspaper's readers, ho

marta [7]

Answer: 1500 readers
explanation: all readers take up 100%
100/50=2
100% / 50 = 2%
2% x 50 = 100%
30 x 50 = 1500 readers

7 0

3 years ago