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MAXImum [283]
3 years ago
7

Area of a Circle This activity will help you meet these educational goals: Mathematical Practices—You will make sense of problem

s and solve them, reason abstractly and quantitatively, construct viable arguments and analyze the reasoning of others, and look for and express regularity in repeated reasoning. Directions Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work. Activity The diameter of each of the three circular lights in a traffic signal is 7 inches. In this activity, you will find the total area of the three lights. Part A Each circular light has a diameter of 7 inches. What is the radius of each light?​
Mathematics
1 answer:
Annette [7]3 years ago
8 0
Can someone tell me the answer
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Kristen and Mitchell were given the same math assignment. Kristen completes 0.8 of her work in class. Mitchell completes 0.75 of
monitta
Mitchell because if you add a zero at the end of the .8 it would be 0.80 and 0.75 is smaller than 0.80 so Mitchell has more work to do at home
5 0
3 years ago
Help I'm not sure if this is the answer?<br><br> (This question is about trigonometric ratios)
dem82 [27]

9514 1404 393

Answer:

  (b) 15.32

Step-by-step explanation:

You can use your triangle sense to answer this.

The side x will always be shorter than the hypotenuse, 20. This eliminates the last two choices.

If the angle is 45°, then the sides are equal at about 0.707 times the length of the hypotenuse. That would make them 0.707×20 = 14.14. Since the angle is greater than 45°, the opposite side will be greater than 14.14. Only one answer choice fits between 14 and 20: the second choice -- 15.32.

__

The mnemonic SOH CAH TOA reminds you of the relation ...

  Sin = Opposite/Hypotenuse

  sin(50°) = x/20

  x = 20×sin(50°) . . . . multiply by 20 to find x

  x ≈ 15.32 . . . . . . . . . use your calculator to evaluate

__

The attachment is intended to show how the triangle side lengths change with angle.

3 0
2 years ago
I don’t understand this
kati45 [8]

Answer:

She shouldnt have divided by two

Step-by-step explanation:

hope this helps

8 0
3 years ago
Three times a number increased by ten is equal to twenty
JulijaS [17]

Answer:

The number is 10/3

Step-by-step explanation:

<u>Step 1:  Convert words into an expression</u>

Three times a number increased by ten is equal to twenty

(3n) + 10 = 20

<u>Step 2:  Subtract 10 from both sides</u>

3n + 10 - 10 = 20 - 10

3n = 10

<u>Step 3:  Divide both sides by 3</u>

3n / 3 = 10 / 3

n = 10/3

Answer:  The number is 10/3

6 0
3 years ago
Read 2 more answers
3 Write -1 as a decimal number. ​
Karo-lina-s [1.5K]

Answer:

huh? -1 is a decimal number maybe write it as -1.0 ?

3 0
2 years ago
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