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melomori [17]
2 years ago
11

A 210∘ arc has a length of 42π. Find the radius of the circle.

Mathematics
1 answer:
Phantasy [73]2 years ago
4 0

Answer:

20

Step-by-step explanation:

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Coffee costs $18.96 for 3 pounds. And
trapecia [35]

Answer:

the constant of proportionality is 6.32

4 0
3 years ago
Need help fast,please!
Elina [12.6K]

1) 3

2) 2

3) 7

4)5

5)5

6)9

7)4

4 0
2 years ago
PLEASE HELP ME ASAP. I REALLY NEED THIS DONE
Juli2301 [7.4K]

Answer:

x = 65

Step-by-step explanation:

using the Altitude- on- Hypotenuse theorem

(leg of big Δ )² = (part of hypotenuse below it ) × (whole hypotenuse)

x² = 25 × 169 = 4225 ( take square root of both sides )

x = \sqrt{4225} = 65

6 0
2 years ago
ASAP HELP!!! use the quadratic regression feature of a graphing calculator to find a quadratic model. round to the nearest thous
seropon [69]

Answer:

y = 0.008x^2 + 0.518x + 131.886

Step-by-step explanation:

  1. Make sure your Plot 1 is ON. Select the Scatter Plots and the appropriate lists.
  2. Clear all functions in [Y=]
  3. Input data in L1 and L2. Go to [Stat] [Enter] to input data.
  4. Graph data points. ...
  5. Choose a regression from the list in [Stat] "CALC". ...
  6. Go to [ZOOM] "9: ZoomSTat" to view the data with the regression curve.

(credit: CPM Educational Program)

3 0
3 years ago
Please help.
kondor19780726 [428]

Answer :

27.5 minutes

Steps:

1) put into fraction form:

160/20 = 220/x

2) simplify:

160/20 = 8/1

3) cross multiply:

8 • x = 8x

220 • 1 = 220

4) divide on both sides:

8/8 = crosses out

220/8 = 27.5

6 0
2 years ago
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