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Ainat [17]
2 years ago
9

Is (2, 1) a solution to this system of equations? 4x + 12y = 20 x + y = 3 yes no

Mathematics
2 answers:
dedylja [7]2 years ago
8 0

Answer:

yes

I hope to help you

my dear

Amanda [17]2 years ago
6 0

Answer:

no

Step-by-step explanation:

4(2)+12(1)=20

8 + 12 =20

20 = 20

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Solve for K <br><br> 8(10-K) = 2k<br><br><br> K=?
maks197457 [2]

8(10-K) = 2k

mutiply the bracket by 8

(8)(10)= 80

(8)(-k)= -8k

80-8k= 2k

move -8k to the other side

sign changes from -8k to +8k

80-8k+8k= 2k+8k

80= 2k+8k

80= 10k

divide by 10 for both sides

80/10= 10k/10

k= 8

Answer: k= 8

7 0
3 years ago
Read 2 more answers
Make for me number 21 thx
xz_007 [3.2K]

Method One

You could divide by 5 right away.

20/5 = - 3 + x

4 = - 3 + x Add 3 to both sides.

4 + 3 = x

x = 7

Method Two.

You could remove the brackets. This is slightly longer, but some questions can only be solved that way.

20 = 5(-3) + 5x

20 = -15 + 5x Add 15 to both sides

20 + 15 = 5x

35 = 5x Divide by 5

35/5 = x

7 = x

8 0
3 years ago
What your zodiac sign and lets talk cause imm bo red
sesenic [268]

Answer:

VIRGO!!!!! <3333

Step-by-step explanation:

4 0
3 years ago
If the measure of 1 is x and the measure of &lt;2 is x+50, what is the measure of &lt;4?
marin [14]

Answer:

Measure of angle 4 is 115°

Step-by-step explanation:

First, we want to find the measure of angle 2, because the measure of angle 2 is equal to angle 4. When 2 straight lines cross each other, the angles formed are always equal to the angle right across from it.

Find angle 2 by setting up an equation:

x+x+50=180

This is basically saying that angle 1 plus angle 2 equals 180°. In a half turnaround, the angle is 180°. Angle 1 and 2 make up a half turnaround.

Solve the equation:

x+x+50=180

Combine the 2 x's to get 2x.

2x+50=180

Subtract 50 from both sides.

2x=130

Divide both sides by 2.

x=65

Since x=65, plug 65 into x in the measure of angle 2 (x+50).

65+50=115.

Since Angle 2 is equal to angle 4, angle 4 is also 115.

7 0
2 years ago
Does the order in which you perform the subtraction matter in the distance formula?
Helen [10]

PEMDAS should always be followed when doing math.

Parenthesis ()

Exponents ^

Multiplication *

Division /

Addition +

Subtraction -


Does the order in which you perform the subtraction matter in the distance formula?

Does the order in which you perform the subtraction matter in the slope formula?

Subtraction should always be performed lastly.

6 0
3 years ago
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