I don't really need help but the first person to answer gets a brainlest
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Answer:
x = 12
m(∠B) = 45°
Step-by-step explanation:
Given question is incomplete; find the complete question in the attachment.
In the figure attached two lines 'l' and 'm' are the parallel lines and line 'n' is a transverse.
Angles A and B are the "Alternate exterior angles" which will equal in measure.
m(∠A) = m(∠B)
(5x - 15) = (2x + 21)
5x - 2x = 15 + 21
3x = 36
x = 12
Since, m(∠B) = (2x + 21)
= (2×12) + 21
= 24 + 21
= 45°
Therefore, x = 12 and measure of angle B will be 45°.
Start by putting into improper fractions.
- 1 2/3 = - 5/3
- 2 1/5 = - 11/5
Now stack the fractions like this.
Here's the key part (or one of them). Cancel the minus signs. Since there are 2 of them they become a plus.
Now invert the 11/5. That means turn it upside down. Put the 5 in the numerator and 11 in the denominator. Multiply by it by the top fraction.
When you do this, you just multiply top by top and bottom by bottom
- 1 2/3 = - 5/3
- 2 1/5 = - 11/5
Now stack the fractions like this.
Here's the key part (or one of them). Cancel the minus signs. Since there are 2 of them they become a plus.
Now invert the 11/5. That means turn it upside down. Put the 5 in the numerator and 11 in the denominator. Multiply by it by the top fraction.
When you do this, you just multiply top by top and bottom by bottom