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3 years ago

I need help with all of this

Mathematics

1 answer:

lord [1]3 years ago

6 0

1. 286 ft
3. 289 ft

I don’t know the rest sry

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A secant and a tangent to a circle intersect in a 42-degree angle. The two arcs of the circle intercepted by the secant and the

Amanda [17]

Answer:

The measure of the third arc is $150\°$

Step-by-step explanation:

step 1

we know that

The measurement of the external angle is the semi-difference of the arcs which comprises

in this problem

Let

x----> the greater arc of the circle intercepted by the secant and the tangent

y----> the smaller arc of the circle intercepted by the secant and the tangent

$42\°=\frac{1}{2}(x-y)$

$84\°=(x-y)$ ----> equation A

$\frac{x}{y}=\frac{7}{3}$

$x=\frac{7}{3}y$ -----> equation B

Substitute equation B in equation A and solve for y

$84\°=(\frac{7}{3}y-y)$

$84\°=(\frac{4}{3}y)$

$y=3*84\°/4=63\°$

Find the value of x

$x=\frac{7}{3}(63\°)=147\°$

step 2

Find the measure of the third arc

Let

z------> the measure of the third arc

we know that

$x+y+z=360\°$ -----> complete circle

substitute the values and solve for z

$147\°+63\°+z=360\°$

$z=360\°-(147\°+63\°)=150\°$

3 0

3 years ago

Help me ill give u a thanks!

stiv31 [10]

Answer:

11. 68.6 mph

12. 5/6 page (0.83)

Step-by-step explanation:

You simply divide them (remember the word "per" means divide).

$\dfrac{120}{1 \frac34} \approx 68.6$

$\dfrac{8 \frac13}{10} = \frac56$

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Giving 100 points if someone can answer this correctly...

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Answer:

3813.6

Step-by-step explanation:

90.8 x 42 = 3813.6

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Answer:

I kept coming up with $3.56

Step-by-step explanation:

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