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Sphinxa [80]
3 years ago
13

Application Question:

Mathematics
1 answer:
Alika [10]3 years ago
7 0
When you add 4 to 25 you get 21 then subtract 11 and get 10 and then add 15 which is equal to 25 and then subtract 13.

the answer is 12
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Secant BE and CF intersect at point A inside D. What is the measure of BF?
svet-max [94.6K]

Answer:

\text{BF}=80^{\circ}

Step-by-step explanation:

We have been given a circle D. Secant BE and CF intersect at point A inside D. We are asked to find the measure of arc BF.

We know that when two secants intersect inside a circle, then the measure of angle formed is half the sum of intercepting arcs.

m\angle EAF=\frac{\text{Measure of arc EF+Measure of arc BC}}{2}

70^{\circ}=\frac{\text{Measure of arc EF+Measure of arc BC}}{2}

2*70^{\circ}=\frac{\text{Measure of arc EF+Measure of arc BC}}{2}*2

140^{\circ}=\text{Measure of arc EF+Measure of arc BC}

We know that degree measure of circumference of circle is 360 degrees, so we can set an equation as:

\text{Arc EF+BC+EC+BF}=360^{\circ}

140^{\circ}+140^{\circ}+\text{BF}=360^{\circ}

280^{\circ}+\text{BF}=360^{\circ}

280^{\circ}-280^{\circ}+\text{BF}=360^{\circ}-280^{\circ}

\text{BF}=80^{\circ}

Therefore, the measure of arc BF is 80 degrees.

5 0
3 years ago
PLEASE HELP, DUE IN 5 MIN I NEED HELP PLS PLS PLS!!!!!!!!!
BlackZzzverrR [31]

Answer:

it would be: A.

Step-by-step explanation:

6 0
3 years ago
I need help fast ! What is the slope of y=-x+7 ​
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Answer:

-1 this equation is in slope intercept for y=mx+b. the slope is variable m, which in this case is -1. the one is always invisible in front of variable

3 0
3 years ago
A student is trying to solve the system of two equations given below:
erik [133]

Answer:

sorry I didn't know.........

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I NEED HELP AND FAST WILL DO BRAINLEST
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21/50 is 42 percent of the students. You will have to find 42 percent of 350 to know. 42 percent of 350 is 147.

The second answer is right

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3 years ago
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