3 years ago

Solve each system of equations using the elimination method 10x-6y=54 -4x+3y=-24

Mathematics

1 answer:

Sever21 [200]3 years ago

6 0

Answer:

x = 3; y = -4

Step-by-step explanation:

2(10x - 6y = 54) = ( 20x - 12y = 108)

4(-4x + 3y = -24) = ( -16x + 12y = -96)

4x = 12

x = 3

-4(3) + 3y = -24

-12 + 3y = -24

+12 +12

3y = -12

y = -4

You might be interested in

Find a particular solution yp of the following equation.

Sonja [21]

Answer:

Step-by-step explanation:

7 0

3 years ago

A right triangle is given with a missing value of t. It is stated that the triangle is an acute right triangle with angles 50∘ a

sergiy2304 [10]

Answer: t=20°

Step-by-step explanation:

1. By definition, the sum of the interior angles is 180 degrees.

2. Keeping the information above on mind, you can write the following expression:

$90+50+2t=180$

3. Now, you must solve for $t$ as following:

$140+2t=180\\2t=180-140\\2t=40\\t=\frac{40}{2}\\t=20$

4. Therefore, the value of $t$ is 20°

6 0

4 years ago

I need help thank you

Alenkasestr [34]

Hello again!
So just like in the last problem you would do the same here.
Solve for 3y + 6 = 3
Subtract 6 from both sides.
3y = -3
Divide by 3.
y = -1
Now plug it into 8y + 2.
8(-1) + 2 = ?
-8 + 2 = ?
= -6
I hope this helps love! :)

5 0

3 years ago

Help 7th grade math need fast please

Vika [28.1K]

Answer:

It's 4800, just multiply 60x80 bc the population is 80x larger than the sample of 100

8 0

3 years ago

Which statement is true

liberstina [14]

B is true
********************************************************************************

8 0

3 years ago