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Yuki888 [10]
3 years ago
11

Need help with this geometry question, solving for x and please explain the formula for this

Mathematics
1 answer:
Alborosie3 years ago
3 0
Alright, so what we can take as a given is that arcDE/2= ∠CDE=2x+20 since the arc corresponding to the angle is 2*the angle. To solve for arcDE, we multiply both sides by 2 to get 2(2x+20)=4x+40=arcDE. Since the arcs in a circle add up to 360 degrees and we only have -20+30x and arcDE, we have -20+40+4x+30x=360 using the associative property. Simplifying, we get 20+34x=340. Subtracting 20 from both sides, we get 340=34x. Next, we can divide both sides by 34 to get 10=x. 
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Solve the given equation.<br> - 29 = - 13 - n<br> Write step by step how you solved it.
wolverine [178]

Answer:

The answer is n=16

Step-by-step explanation:

Let's solve your equation step-by-step.

−29=−13−n

Step 1: Simplify both sides of the equation.

−29=−13−n

−29=−13+−n

−29=−n−13

Step 2: Flip the equation.

−n−13=−29

Step 3: Add 13 to both sides.

−n−13+13=−29+13

−n=−16

Step 4: Divide both sides by -1.

−n/−1 =−16/−1

n=16

6 0
3 years ago
Draw a scale diagram of 15 mm scale factor of 8 <br><br> pleaseee help
trapecia [35]

do u want us to draw it 4 u ? cuz I can

8 0
3 years ago
Solve by the method of your choice, select correct choice below if it is either a solution set, infinitely many solutions the so
mafiozo [28]

Answer: it is a solution set

Step-by-step explanation:

The given system of simultaneous linear equations is expressed as

7x-3y=6 - - - - - - - - - -1

2x+y=11 - - - - - - - - - - - 2

We would eliminate x by multiplying equation 1 by 2 and equation 2 by 7. It becomes

14x - 6y = 12

14x + 7y = 77

Subtracting, it becomes

- 13y = - 65

Dividing the left hand side and the right hand side of the equation by - 13, it becomes

- 13y/13 = - 65/- 13

y = 5

Substituting x = 5 into equation 2, it becomes

2x + 5 = 11

Subtracting 5 from the left hand side and the right hand side of the equation, it becomes

2x + 5 - 5 = 11 - 5

2x = 6

Dividing the left hand side and the right hand side of the equation by 2, it becomes

x = 6/2 = 3

6 0
4 years ago
The function f(x) is shown on the graph.
Sergeeva-Olga [200]

Answer: 12 only

Step-by-step explanation:

The given graph is representing the function f(x).

To find the value of f(0), we need to check the position of curve at x=0.

It implies we need to check the position of curve on y-axis.

We can see there is only one point where function curve is intersection the y-axis such that at x=0 .i.e. y=12

Hence, from the given graph the value of f(0)=12 only.

4 0
3 years ago
Read 2 more answers
Which of the following equations have infinitely many solutions? Choose all answers that apply: A 6x + 35 = –60 – 35 -6x + 35 =
frozen [14]

Answer:

The answer is C because they have the same coefficient and variable on both sides (or something like that but its definitely c )

5 0
2 years ago
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