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wariber [46]
4 years ago
12

Help me find the missing angle thanks

Mathematics
1 answer:
quester [9]4 years ago
6 0

Answer:

d= 70°

b= 40°

a=35°

c=35°

Step-by-step explanation:

Before starting to answer the question it is important to understand that "vertical angles" are equal.

What are vertical angles?

b and 40° are vertical angles.

d and 70° are vertical angles.

So from that we can say,

d= 70°

b= 40°

The angle above "c" and angle above "a" are equal. It is shown in the figure. Lets take that angle as x. I have shown this in the attached figure.

Then,

c=x  and a=x (vertical angles)

therefore, c=a.

So we can say a=c=x.

40°+d+x+c+b+70°+a+x=360° (Angles around a point is 360°)

40°+70°+a+a+40°+70°+a+a=360°

220°+4a=360°

4a=360°-220°

4a=140°

a=35°

but, a=c

therefore, c=35°


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Given that (-1, a) is the midpoint of the line segment joining (0, -2) and (b, 8) then find the values of a and b
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Step-by-step explanation:


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Bess [88]

Answer:

<h2>-28°</h2>

Step-by-step explanation:

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Answer:

Step-by-step explanation:

Hello!

Given the variables

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α: 0.05

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Using the p-value approach, the decision rule is:

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4 0
3 years ago
What is the solution of the system x − 3y = –13 and 5x + 7y = 34? A. `x = (6)/(5)`, y = 4 B. `x = (7)/(2), y = (9)/(2)` C. `x =
Masteriza [31]

For this case we have the following system of equations:

x-3y = -13\\5x + 7y = 34

From the first equation we clear "x":

x = -13 + 3y

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We apply distributive property:

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We add similar terms:

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We divide between 22 on both sides:

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We look for the value of the variable "x":

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(x, y): (\frac {1} {2}, \frac {9} {2})

ANswer:

(x, y): (\frac {1} {2}, \frac {9} {2})

5 0
3 years ago
Read 2 more answers
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