All categories

2 years ago

Solve the systems of equations through elimination, show work 3+2x-y=0 -3-7y=10x

Mathematics

1 answer:

Wittaler [7]2 years ago

7 0

Answer: x=-1 y=1

Step-by-step explanation:

solve y in 3+2x-y=0

y=3+2x

sub y=3+2x into -3 -7y=10x

-14x- 24= 10x

solve x in -14x-24=10x

x= -1

sub x= -1 into y =3+2x

y=1

so therefore x= -1 and y=1

You might be interested in

Can someone help me please?

Roman55 [17]

Answer:

X-16 the first one

Step-by-step explanation:

The first one is equal to x-4

3 0

3 years ago

Hi! ❤️ sending love to all I’m wishing for some super needed help here

nevsk [136]

Answer:

SEE THE IMAGE FOR ALL ANSWERS.

4 0

3 years ago

If f(x)=x+4 and g(x)=x^2-1, what is g(f(x))?

pickupchik [31]

g(f(x)) means plug in f(x) for every "x" in g(x).

g(f(x))=(x+4)^2-1=x^2+8x+16-1=x^2+8x+15

answer: x^2+8x+15

3 0

3 years ago

I don’t know how to do this. HELP!

Karo-lina-s [1.5K]

Answer:

1/4

Step-by-step explanation:

coins have 2 sides, tails and heads, so for it to land on tails is a 1/2 chance. Dice have 6 sides and 1,3,5 are all odd so its a 3/6 chance. Simplify 3/6 to 1/2 and multiply by 1/2 to get 1/4. im not sure, its my guess.

3 0

3 years ago

A hiker begins in a valley at 150 feet below sea level. When the hiker reaches the highest point on the trail, he is 579 feet ab

RoseWind [281]

We have been given that a hiker begins in a valley at 150 feet below sea level. When the hiker reaches the highest point on the trail, he is 579 feet above sea level. We are asked to find change (in feet) in elevation of the hiker.

To find change in hiker's elevation we will subtract hiker's initial elevation from hiker's elevation at the end of trail.

$\text{Change in elevation}=579--150$

We are subtracting negative 150 because at the beginning of trail hiker was 150 feet below sea level.

$\text{Change in elevation}=579+150$

$\text{Change in elevation}=729$

Therefore, the change in hiker's elevation is 729 feet.

5 0

3 years ago