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erastovalidia [21]

3 years ago

13

The graph shows the relationship between time and distance is Pam rides her bike. During which time period was the rate of chang

e the greatest?

2 answers:

tensa zangetsu [6.8K]3 years ago

4 0

Where is the graph ?

deff fn [24]3 years ago

4 0

Are there any options or anything

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In the circle below, DB = 22 cm, and m<DBC = 60°. Find BC. Ignore my handwriting.

Karo-lina-s [1.5K]

Answer:

$BC=11\ cm$

Step-by-step explanation:

step 1

Find the measure of the arc DC

we know that

The inscribed angle measures half of the arc comprising

$m\angle DBC=\frac{1}{2}[arc\ DC]$

substitute the values

$60\°=\frac{1}{2}[arc\ DC]$

$120\°=arc\ DC$

$arc\ DC=120\°$

step 2

Find the measure of arc BC

we know that

$arc\ DC+arc\ BC=180\°$ ----> because the diameter BD divide the circle into two equal parts

$120\°+arc\ BC=180\°$

$arc\ BC=180\°-120\°=60\°$

step 3

Find the measure of angle BDC

we know that

The inscribed angle measures half of the arc comprising

$m\angle BDC=\frac{1}{2}[arc\ BC]$

substitute the values

$m\angle BDC=\frac{1}{2}[60\°]$

$m\angle BDC=30\°$

therefore

The triangle DBC is a right triangle ---> 60°-30°-90°

step 4

Find the measure of BC

we know that

In the right triangle DBC

$sin(\angle BDC)=BC/BD$

$BC=(BD)sin(\angle BDC)$

substitute the values

$BC=(22)sin(30\°)=11\ cm$

6 0

3 years ago

What is the volume? Multiple choice. Please and thank you

Levart [38]

Its A!!
hope this helps1

5 0

3 years ago

Read 2 more answers

The figure below shows a graph of the function of f(x) in the coordinate plane

Lana71 [14]

Answer:I think one is x

Step-by-step explanation:

4 0

3 years ago

Hello i need some help

Natalija [7]

Answer:

y = 2x - 1

Step-by-step explanation:

(3, 5) (5, 9)

slope = (9-5)/(5-3) = 4/2 = 2

y = mx + b

5 = 2(3) + b

-1 = b

y = 2x -1

6 0

3 years ago

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Karen purchased a prepaid phone card for $30. Long distance calls cost 16 cents a minute using this card. Karen used her card on

Sedbober [7]

30-24.08=5.92, 5.92/.16=37 minutes

3 0

3 years ago