3 years ago

Solve using elimination. 2x – 4y = 10 -3x + 4y = -19

Mathematics

1 answer:

Darina [25.2K]3 years ago

6 0

Answer:

x= 9 y=2

Step-by-step explanation:

Add up the equations vertically to eliminate y.

-x=-9

change the signs:

x=9

substitute the given value of x into the equation 2x-4y=10

2(9)-4y=10

18-4y=10

4y=8

y=2

You might be interested in

Solve for x+.15x=3.45

blsea [12.9K]

15x=3.45
divide by 15 on both sides
x=3.3478

4 0

3 years ago

Read 2 more answers

There are 1500 pupils in a school. 23% of the pupils in the school are Malays. 68% of the pupils are Chinese. The rest of the pu

sasho [114]

Answer:

there is 77% more chinese students.

Step-by-step explanation:

subtract the 23% of malay students from the 100% of the students in the school.

100-23=77

5 0

3 years ago

Solve the inequality. X-5 < 16 A. X> 21 B. x<21 C. x< 11 D. x> 11

larisa [96]

Answer:

x < 21

Step-by-step explanation:

x - 5 < 16

x < 21 Add 5 to both sides

4 0

3 years ago

Read 2 more answers

Solve the equation. 5=w2.2

Sedaia [141]

Answer:

The answer is about 2.27

Step-by-step explanation:

Hope this help <3

Let me know if you need an explanation

5 0

3 years ago

How do you solve this problem (5x+10)=(2-7x)

SVETLANKA909090 [29]

Answer:

x=-2/3

Step-by-step explanation:

(5x+10)=(2-7x)

5x+10=2-7x

5x+7x=2-10

12x=-8

x=-8/12

x=-2/3

6 0

3 years ago