Can someone help me with this problem ??

Mathematics

2 answers:

KiRa [710]3 years ago

7 0

B= 120° because all triangles equal 180° so 19°+41° = 60 and 180° -60 equals 120°

A= 120 because B and A are vertical angles

Y= 22° because 120 +38= 158 and 180-158 = 22°

Firdavs [7]3 years ago

4 0

Answer:

a = 120

b = 120

y = 22

a and b and vertical angles

Step-by-step explanation:

angles A and B are vertical angles so they're equal.

you can find angle b because all the angles in a triangle add up to 180

19 + 41 + B = 180

b = 180 - 19 - 41

b = 120

and since theyre equal, that means

a = 120 as well.

since you know a = 120 you can find y.

120 + 38 + y = 180

y = 180 - 120 - 38

y = 22

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Rewrite the equation below so it does not have fractions

S_A_V [24]

<h3>Answer: 4x + 42 = 5</h3>

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Explanation:

The fractions we want to eliminate are 2/3 and 5/6. The lowest common denominator (LCD) is 6.

If we multiply both sides by the LCD, then we'll cancel out the fractions. This is because

6*(2/3) = (6/1)*(2/3) = (6*2)/(1*3) = 12/3 = 4

6*(5/6) = (6/1)*(5/6) = (6*5)/(1*6) = 30/6 = 5

So in short, the (2/3)x becomes 4x and the 5/6 becomes 5 after we multiply both sides by the LCD 6.

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This is what the steps could look like

$\frac{2}{3}x + 7 = \frac{5}{6}\\\\6*\left(\frac{2}{3}x + 7\right) = 6*\frac{5}{6}\\\\6*\left(\frac{2}{3}x\right) + 6*\left(7\right) = 6*\frac{5}{6}\\\\4x + 42 = 5\\\\$