1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Charra [1.4K]
3 years ago
8

Find the length of radius r. 9.9 13 7

Mathematics
1 answer:
dem82 [27]3 years ago
4 0

Answer:

Radius = 7

Step-by-step explanation:

Since BA is tangent to circle O, it creates a 90° angle with the radius

Therefore, you can use Pythagorean theorem to solve this problem

a² + b² = c²

Let's say a is the radius

b is 5

c is 8.6

a² + 5² = 8.6²

a² + 25 = 73.96

Subtract 25 from both sides

a² = 48.96

Root both sides

a ≈ 6.997142274

You might be interested in
Fiona and Camilla took a load of peaches to the farmer’s market. During the first hour, they sold ½ of the peaches plus ½ of a p
Lana71 [14]
<em>They took 101 peaches to market.</em>

<u>Check:</u>

In the 1st hour, they sold (101/2 + 1/2) = 102/2 = 51.  They had 50 left.

In the 2nd hour, they sold (50/3 + 1/3)=51/3=17.  They had (50-17)=33 left.

In the 3rd hour, they sold (33/4 + 3/4) = 36/4 = 9.  They had (33-9) = 24 left.

In the final hour, they sold (24/5 + 1/5) = 25/5 = 5.  They had (24-5) = 19 left.  yay!

Fiona and Camilla took their 19 remaining peaches and went home.  Sharing with
their parents and their brother Rowlf, each person had 3.8 peaches for dinner.
There was a lot of activity in the bathroom overnight.

================================================

The key to solving this one is to work it backwards.

-- They had 19 peaches left at the end of the day.

-- During the final hour, the 1/5 of a peach that they sold left them with 19,
so they had 19-1/5 before they sold the 1/5 of a peach.
The 19-1/5 was 4/5 of what they had at the beginning of the final hour.
So, at the beginning of the final hour, they had (5/4)x(19.2) = 24 .

-- During the 3rd hour, the 3/4 of a peach that they sold left them with 24,
so they had 24-3/4 before they sold the 3/4 of a peach.
The 24-3/4 was 3/4 of what they had at the beginning of that hour.
So, at the beginning of the 3rd hour, they had (4/3)x(24.75) = 33 .

Do the same for the 2nd hour.

Then do the same for the 1st hour.

And you'll work your way back up to 101 peaches.


4 0
4 years ago
3 times the amount of x+2? it is worth 10 points and
FinnZ [79.3K]
Not too sure what you're asking, but...

3(x+2) is the expression
8 0
3 years ago
Read 2 more answers
Asian elephants are typically 2.1 feet shorter than African elephants. If an Asian elephant were 9.4 feet tall, how tall would a
amm1812
The elephant would be 11.5 feet tall
7 0
3 years ago
Read 2 more answers
Ryan bought a digital camera with a list price of $150 from an online store offering a 5% discount. He needs to pay $5.50 for sh
zhannawk [14.2K]
I am thinking 150-5% = 142.50 + 5.50 = $148
3 0
4 years ago
What is not a solution of -4 &lt; x
Gnesinka [82]

Answer:

-5

Step-by-step explanation:

because it is less than -4 when it is suppose to be more than-4

8 0
4 years ago
Read 2 more answers
Other questions:
  • Is the answer b? If not then what’s the answer
    8·2 answers
  • if you take out a loan that cost $130.50 over 9 years and interest rate of 10% how much total was the loan for
    7·1 answer
  • Part C: YX = 24 meters and mYX = 120 degrees , then determine the radius of circle H.
    11·1 answer
  • QUESTION 1<br> Express the following ratios as fractions.<br> 4:6
    6·2 answers
  • Write 3.5 x 106 in standard<br>notation​
    14·1 answer
  • Help ASAP i need a lot of help
    8·1 answer
  • Help me! Im having trouble if you can please answer and give an explanation! The best one will get brainlist!
    7·1 answer
  • 2. Graph the solution set to the following inequality:<br> 7-y&lt;2x
    14·1 answer
  • A class is made up of 16 boys and 4 girls. Half of the girls wear glasses. A student is selected at random from the class. What
    14·2 answers
  • Draw the region that satisfies all three of the inequalities; <br>x &lt; 3, y &gt; 2, y &lt; 2x+3​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!