Could someone explain this to me ??

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Explanation:

Refer to the diagram below. I'm using the points A,B,C,D,E to help label the triangles, and to label the angles as well.

For now, let's focus on triangle DEC.

The top most angle is given as D = 65. Note how the angles D and E are opposite the congruent lines (marked with the red single tickmarks). This means that angles D and E are congruent to one another. So E = 65 as well. This is shown in the diagram below.

For now we don't know what angle C is, so we'll call it y. More specifically, we'll make y the measure of angle DCE.

For any triangle, the three angles always add to 180

y+65+65 = 180

y+130 = 180

y = 180-130

y = 50

So angle DCE is 50 degrees.

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Now we move onto triangle ABC.

Because angles DCE and ACB are vertical angles, this makes angle ACB 50 degrees also. Effectively, anywhere you see a 'y' in the diagram below, replace it with 50.

So triangle ABC has the three angles y = 50, y = 50 and 7x-4

We can solve for x like so

y+y+(7x-4) = 180

50+50+(7x-4) = 180

7x+96 = 180

7x = 180-96

7x = 84

x = 84/7

x = 12

This points to choice C as the final answer.

Which of the following is a composite number between 1 and 10? A. 5 B. 3 C. 7 D. 4

Help me plsss in need help there is a picture

The equation of a function is
y = 12x - 7. What is the output when the input is 5?

A. 50
B. 53
C. 56
D. 60

Ophelia reads 104 pages in 2 hours, how many pages will she read in 3 hours? REMEMBER TO INCLUDE THE UNIT OF MEASURE (PAGES)
IN YOUR ANSWER.
eb9th
m 12:00
Your answer:

Solve m1 and m2 In the diagram

Please help me solve Im so confused

Please show your work in the answers. Please answer the 3 questions I put.

There are 30 pieces of candy in a bowl and 6 of them are Twix. What percentage of pieces of candy in the bowl are Twix?

Select the trip that will take 3 hours.
a. A train goes 60 miles per hour between Springfield and Boston, which is 180 miles away.
b. You bike to McDonald's at 10 miles per hour, which is 5 miles away.
c. You drive 80 miles per hour to New York City, which is 320 miles away.

A bird flies 40 miles, but it has only completed 80% of its trip. How far was the trip?​

When asked about their favorite
holiday, only 10% of the class picked
Valentines Day. How many student
picked Valentine's Day if there were 30
students?

PLEASE HELP true or false I WILL MAKE BRAINLIEST

solve for X
(4x+7)
(2x+5)​

Jay jogs daily for exercise. he hits faster than 3.5 miles per hour every day. which inequality representd Jay's jogging speeds s?
​

Twice a number is 17




Write it as an equation

(-5y^2-9y-4)-(-2y^2-y+8)

find the value of x ! geometry

Given m<2 = 55°, find the measure of each missing angle.

9(1 + w) – 5w = 5
W=

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Part B
Jose predicts that the value of his car will decrease exponentially by 25% over the next 4 years. If Jose's prediction
is correct, about how much will his car be valued at, to the nearest thousand dollars, after 4 more years?

HELP PLEASE URGENT TIMED

Which of the following are rays shown in the drawing?
BE
AC
AB
DC

PLEASE HELP ASAP 50 POINTS AND BRAINLIEST EASY QUESTION!

Which options have a unit rate of 3?

1. 3 3/4 : 2

2. 2 : 2/3

3. 15/2 : 2 1/2

4. 2 1/2 : 5/6

5. 1 : 1/4

6. 2/3 : 1

PLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEASE!

You drinking soda while playing a video game. You drank 4 full drinks over 3 1/3 rounds. If you drank the same amount each round, how much did you drink each round?

Find the volume
I really need your help

an object has a mass of 3 g and a volume of 4 ml, what is it's density?​

Evaluate: 13 × 20 – 15 × 9 + 20 × 7 – 6 × 15.

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A large can is 12 inches high the radius of the top is 3.5 inches what is the area of a rectangular label that is wrapped around the can

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IS THE ANSWER B JUST TRYING TO CHECK

pls help me for 100 points!