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erma4kov [3.2K]
3 years ago
10

Find the value of unknown angle​

Mathematics
1 answer:
trapecia [35]3 years ago
4 0

Answer:

x + 50° + 70° = 180°

or, x + 120° = 180°

or, x = 180° - 120°

•°• x = 60°

Step-by-step explanation:

x + 50° + 70° = 180° ( Due to Straight line )

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A system of equations has infinitely many solutions. If 2y - 4x = 6 is one of the equations, which could be the other
Serjik [45]

Answer:

-y = -2x - 3

Option 3

Step-by-step explanation:

When equations are equivalent, they will have infinitely many solutions.

If you want to find an equivalent equation, you can <u>multiply/divide every</u> term in the equation by the same number. You can also <u>rearrange</u> the equation.

Since the options mostly have "y" by itself, start by <u>rearranging</u> to isolate "y" in the given equation.

Move all the other numbers to the right of the equal sign except for "y". To move a number, apply its reverse operation to the entire equation.

Do reverse operations in reverse BEDMAS order.

2y - 4x = 6                Move "-4x" first. It's reverse is +4x.

2y - 4x + 4x = 6 + 4x

2y = 6 + 4x                Move the "2" in 2y. Divide the whole equation by 2.

2y/2 = 6/2 + 4x/2

y = 3 + 2x                  Rearrange to look like the answer choices.

y = 2x + 3

This equation looks like option 3 except every term has a different negative/positive.

y = 2x + 3         -y = -2x - 3

We can <u>multiply every term</u> by -1.

y = 2x + 3

y*-1 = 2x*-1 + 3*-1

-y = -2x + (-3)                Negative and positive make a negative

-y = -2x - 3                     Same as option 3

6 0
3 years ago
Read 2 more answers
Find the median and mean of the data set below:<br> 36,4,27,46,46
adelina 88 [10]

Answer:

The mean is

31.8

The median is 36

5 0
2 years ago
I need help....................
inysia [295]
10-200

12-240

15-300

21-420
3 0
3 years ago
The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22. What is the score that is 3 sta
Alborosie

Answer:

Step-by-step explanation:

If the mean is 110, and the standard devaition is 22,

1 standard dev. below the mean is 110-22

2  standard dev below the mean is 110-22-22

3 standard dev below the mean is 110-22-22-22

Hope that helps!

7 0
3 years ago
Between the first and second year of existence of a community service organization, the membership of the organization grew by 1
Marianna [84]

Answer:

i don't know the answer sorry

7 0
2 years ago
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