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ziro4ka [17]
3 years ago
5

Solve each system using elimination.

Mathematics
2 answers:
tia_tia [17]3 years ago
8 0
Add those equations together
<span>1.  4x = 16, x = 4

2. Multiple the second one by 2
2x+4y=22
4x-4y=-16
6x = 6, x = 1

3. Add them together
8x = 24, x = 3
</span>
Marat540 [252]3 years ago
6 0
In 2, we are asked to solve the systems of equations to solve for the variables using elimination. 
 3x + 3y = 27-3(x - 3y = -11)      12 y  = 60        y = 5        x = 4
 2x + 4y = 22 2x - 2y = -8     6y  = 30     y   = 5     x   = 1
  5x - y = 0  3x  + y = 24  8x    =  24   x = 3   y = 15
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A fruit juice company includes 1.872 ounces of orange juice in a 6.65-ounce bottle of a mixed fruit
BigorU [14]

Answer:

4.778 ounces

Step-by-step explanation:

Given that:

Ounces of orange juice in mixed fruit juice = 1.872

Ounces of mixed fruit juice = 6.65 ounces

Ounces of Mixed fruit juice that is not orange juice :

(Ounces of mixed fruit juice - Ounces of orange juice)

(6.65 - 1.872) ounces

= 4.778 ounces

6 0
2 years ago
What's the answer to this?: divide 33 photos into two groups so the ratio is 4 to 7
velikii [3]

total units of ration = 4 +7=11

so, ratio would be (4*33)/11 : (7*33)/11

12 : 21 is the answer.

Did you understand?

5 0
3 years ago
Read 2 more answers
A rectangular television screen has an area of w^2 + 2w square inches if the width of the television screen is w inches, what is
gregori [183]

 

The area of a rectangle is:

A =  length × width

A rectangular television screen has an area:

A = w² + 2w inches²

width = w

length = A / width  = (w² + 2w) / w = w(w + 2) / w = <u>w + 2</u>

Ansver:

<h2><u>length = w + 2</u></h2><h2><u></u></h2><h2><u></u></h2>
3 0
3 years ago
Plz help me 8+x^2-11
likoan [24]

Answer:

-3 + x^2

Step-by-step explanation:

8+x^2-11

First combine the like terms.

so..

8-11 = -3

= -3 + x^2

but we don't know the value of x so we just leave it as it is.

And they both are not like terms so we cant solve them together so you stop there

Hope that helped!

6 0
3 years ago
Read 2 more answers
PLEASE PLEASE HELP ​
nekit [7.7K]

Answer:68.3 degrees

Step-by-step explanation:

The diagram of the triangle ABC is shown in the attached photo. We would determine the length of side AB. It is equal to a. We would apply the cosine rule which is expressed as follows

c^2 = a^2 + b^2 - 2abCos C

Looking at the triangle,

b = 75 miles

a = 80 miles.

Angle ACB = 180 - 42 = 138 degrees. Therefore

c^2 = 80^2 + 75^2 - 2 × 80 × 75Cos 138

c^2 = 6400 + 5625 - 12000Cos 138

c^2 = 6400 + 5625 - 12000 × -0.7431

c^2 = 12025 + 8917.2

c = √20942.2 = 144.7

To determine A, we will apply sine rule

a/SinA = b/SinB = c/SinC. Therefore,

80/SinA = 144.7/Sin 138

80Sin 138 = 144.7 SinA

SinA = 53.528/144.7 = 0.3699

A = 21.7 degrees

Therefore, theta = 90 - 21.7

= 68.3 degees

8 0
3 years ago
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