3 years ago

If x + 5y = -11 and 2x − 3y = 17, what is the value of x + y?

Mathematics

1 answer:

aev [14]3 years ago

6 0

X+5y=-11 (1)
2x-3y=17 (2)

2(1)-(2)
2x+10y-2x+3y=-22-17
13y=-39
y=-3

Sub y=-3 in (1)
x+5(-3)=-11
x=4

So x+y= -3+4 =1

You might be interested in

How can I find the prime factorization of a number with an easy explanation?

mezya [45]

Answer:

Step-by-step explanation:

Step 1: Start by dividing the number by the first prime number 2 and continue dividing by 2 until you get a decimal or remainder. Then divide by 3, 5, 7, etc. until the only numbers left are prime numbers. Step 2: Write the number as a product of prime numbers.

4 0

2 years ago

Lucas and his sister Luisa are saving to buy a birthday present for their mother. The present costs $95. Lucas earns $16 per wee

Radda [10]

Your answer should be c

5 0

3 years ago

Please find the measure of the exterior angle

makvit [3.9K]

Answer:

exterior angles:

144°and 36°

126° and 54°

90° and 90°

Step-by-step explanation:

we know that each angle in a triangle adds up to 180°.

so,

2x+3x+5x=180

10x=180

x=180/10

x=18

the interior angles are:

2x=36°

3x=54°

5x=90°

and explanation is provided to find the exterior angles above.(sorry for the bad handwriting)

6 0

3 years ago

Solve the inequality. <br><br> x – 1 ≤ – 9

Arturiano [62]

Answer:

$X\leq -8$

4 0

3 years ago

In parallelogram ABCD if m

balu736 [363]

Answer:

no idea what the answer is

6 0

2 years ago

Read 2 more answers