2 years ago

Which of the following is a solution to the system of equations? 4 + y = -x y = 2x - 10

Mathematics

1 answer:

kiruha [24]2 years ago

3 0

Answer:

x=3, y= -6

Step-by-step explanation:

make 4+y= -x as equation (1) and make y=2x-10 as equation (2, then you must find a third equation either from equation (1)or (2). If you choose to find equation (3) from (2) it will be y=2x-10 , then substitute equation (3) from (1) because you can't choose (2) , then it will be 4+(2x-10)= -x

the answer will be x =2

substitute x from equation (3)

y=2x-10

y=2 (2)-10

y= -6

You might be interested in

John is working part-time in an office. He works 30 hours per week and earns $600 each week. He currently has $2,700 in a saving

amm1812

He will have 3800 inhis balance i belive

4 0

2 years ago

What It’s written is equivalent to 3(5+4)

NISA [10]

Answer:

Step-by-step explanation:

6 0

2 years ago

Solve. x² – 5x + 6 = 0 {–2, –3} {2, 3} {3, –2} {5, –1}

ddd [48]

What 2 numbes multiply go get 6 and add to get -5
-6 and 1

(x-6)(x+1)=0
set to zero

x-6=0
x=6

x+1=0
x=-1

last one

4 0

2 years ago

10^-2 as a exponential notation

BARSIC [14]

Answer:

1/10^2

Step-by-step explanation:

6 0

2 years ago

Find the volume of a sphere with a surface area of 3600pi in squared.

Anna71 [15]

Answer:

36000pi

Step-by-step explanation:

V = 4/3*pi*r^3 so we need to know r

we know surface area, which is 4pi*r^2=3600pi. so we can solve for r

r=30

so v = 4/3*pi*30^3 = 36000pi

5 0

2 years ago