All categories

2 years ago

What are the measures of angles B and C

Mathematics

1 answer:

sladkih [1.3K]2 years ago

3 0

In a parallelogram opposite angles are equivalent so B=D and A=C.

If B=D, 3n + 20 = 6n - 25; add 25 to both sides

3n + 45 = 6n; subtract 3n from both sides

45 = 3n; divide both sides by 3

15 = n; substitute 15 for n to find the value of angle B;

3(15) + 20 = B

45 + 20 = B

65° = B

Angles C and B are supplementary, which means that when added they equal 180°

so 180 = 65 + C

115 = C

Your answer is choice B

You might be interested in

Will mark first answer brainlest and will answer any of ur questions that I can!!!! PLEASE! I'm stuck! In exercises 4-9, conside

dedylja [7]

Answer:

Step-by-step explanation:

because it is probability

3 0

2 years ago

Lisa is in charge of planning a reception for 3600 people. She is trying to decide which snacks to buy. She has asked a random s

Olenka [21]

Answer:

The expected number of the people at the reception whose favorite snack will be chips is 1152

Step-by-step explanation:

Given

The data in the above table and

Reception = 3600

Required

Predict the number of the people at the reception whose favorite snack will be chips.

The first step is to determine the total number of samples;

$Total = Brownies + Cookies + Chips + Other$

$Total = 32 + 22 + 56 + 65$

$Total = 175$

The next step is to determine the fraction of people whose favorite is chips

$Fraction = \frac{Chips}{Total}$

$Fraction = \frac{56}{175}$

The product of the above fraction and the expected number of people in the reception is the solution to this question;

$Expected\ Number = \frac{56}{175} * 3600$

$Expected\ Number = \frac{56* 3600}{175}$

$Expected\ Number = \frac{201600}{175}$

$Expected\ Number = 1152$

Hence, the expected number of the people at the reception whose favorite snack will be chips is 1152

5 0

2 years ago

Add the number that would make the expression a perfect square. x² - 4x + Helppp me

galina1969 [7]

Answer:

x\left(x-4\right)

Step-by-step explanation:

xx-4x

6 0

2 years ago

Plz help due tonight

Monica [59]

Answer:

My memory might be a bit cloudy, but I think it's A) AB and C) BC, because of the little lines they each have, which indicate some type of order or something.

I'm sorry if this doesn't explain too much, I tried friend.

5 0

2 years ago

Write an equation of the line that passes through (-4,-1) and is perpendicular to the line y=4/3x+6

pochemuha

Y = -3/4x - 2 is the answer

4 0

2 years ago