All categories

2 years ago

PLEASE HELP!!!!!!!!!!!!

Mathematics

1 answer:

Ratling [72]2 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

PQRS is a cyclic quadrilateral.

the opposite angles in a cyclic quadrilateral sum to 180° then

∠ Q + ∠ S = 180 ( substitute values )

3x - 8 + 3x + 8 = 180

6x = 180 ( divide both sides by 6 )

x = 30

Then

∠ Q = 3x - 8 = 3(30) - 8 = 90 - 8 = 82°

∠ S = 3x + 8 = 3(30) + 8 = 90 + 8 = 98°

∠ P = x + 15 = 30 + 15 = 45°

∠ R = 180° - ∠ P = 180° - 45° = 135°

You might be interested in

How can you reflect a point over the y axis without graphing it?

Katarina [22]

Answer: You switch the point in the x-axis to the negative/positive of the number.

Step-by-step explanation:

So for example if you have the point (3,7), you would switch the 3 to -3 and you would keep the y the same.

Hope this helps!

8 0

3 years ago

A group of 100 students were randomly assigned to receive vitamin C (50 students) or a placebo (50 students). The groups were fo

jeka57 [31]

Answer:

A. Independent samples

Step-by-step explanation:

This experiment is comparing the results between two independent samples. Paired samples consist of data for which each point in one sample would be paired to a specific data point in another sample. In the present study, there are no naturally occurring pairs since only the proportions, for the whole sample, of students with colds were compared. Therefore, the answer is:

A. Independent samples .

8 0

4 years ago

Someone please help

Natasha2012 [34]

Correct Work

4x+8 +3(x-4)

4x +8 + 3x-12

4x+3x+8 -12

7x -4

Mistake Made

3 wasn't multiplied by the 4 in the bracket
Like terms wasn't combined in the working out
The answer was supposed to be -4, 8-4= -4

6 0

3 years ago

Item 4

jarptica [38.1K]

Answer:

<-2

Step-by-step explanation:

i took the test

6 0

3 years ago

Read 2 more answers

Explain when the congruent complements theorem would be appropriate to use in a proof.

Natasha2012 [34]

The congruent complements theorem 2 angles are complements of the same angle (or of congruent angles), then the two angles are congruent.

7 0

4 years ago