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
Oduvanchick [21]
3 years ago
4

Math help please!!!!! If AO = 21 and BC = 14, what is AB?

Mathematics
2 answers:
trasher [3.6K]3 years ago
5 0
The answer is 28 because line BO is similar to AB 
Viefleur [7K]3 years ago
3 0

Given is a circle O with tangent AB and secant OB.

Given is OA = 21 units and BC = 14 units.

From the diagram, OB = OC + BC.

OC and OA, both are radius, so OC = OA = 21 units.

Now OB = 21 + 14 = 35 units.

<u>In right triangle ΔOAB, using Pythagorean theorem; </u>

OA² + AB² = OB²

⇒ (21)² + AB² = (35)²

⇒ 441 + AB² = 1225

⇒ AB² = 1225 - 441  = 784 square units

⇒ AB = \sqrt{784} =28

⇒ AB = 28 units.

Hence, final answer is AB = 28 units.

You might be interested in
PLSSS HELP ME ON THIS
stiks02 [169]
1. True
2. False
3. True
When ordered for location 1, the values are 34,52,85,86,100 with the median is 85 because it is in the middle of the other values. True

The range of location 2 is from 19 to 65 base don data shown, False

The median for location 2 is (20,29) which is smaller than the 85 for location 1 so location 1 had more participants if based on the median measurement. True

3 0
4 years ago
How to find the mean and standard deviation of the sampling distribution of the sample proportion when a random sample of 100 pe
grigory [225]

Answer:

bvcxz

Step-by-step explanation:

7 0
3 years ago
Which of the following are ordered pairs for the equation y = 1/8x + 11
Anna11 [10]

Answer:

(0, 11) is a solution.

(8, 12)  is a solution.

(16, 13) is a solution

(1, 89/8)  

(2,  45/4)

Step-by-step explanation:

y = 1/8x + 11

for this equation....

y = (1/8) x + 11

let x = 0  get

y = 0 + 11 = 11

(0, 11) is a solution.

(8, 12)  is a solution.

(16, 13) is a solution

(1, 89/8)   because    y = 1/8 + 11 = 1/8 + 88/8 = 89/8

(2,  45/4)

3 0
3 years ago
Carlos is analyzing the results of an experiment on two groups of mice in which he compared the difference in their weight gain
Arlecino [84]
Given:difference in the mean weight gain is 0.60 gramsstandard deviation of the difference in sample mean is 0.305
68% confidence interval for the population mean difference is a) 0.305
0.60 + 1 * 0.3050.60 + 0.305 = 0.9050.60 - 0.305 = 0.295
95% confidence interval for the population mean difference is c) 0.61
0.60 + 2 * 0.3050.60 + 0.61 = 1.210.60 - 0.61 = -0.01

3 0
3 years ago
If Bob has three kids and the product of their ages is 72 and his youngest sons name is Justice how old are his three kids
avanturin [10]
I think a hint is that his youngest kids name is Justice which has 7 letters in it so he is 7 yrs old... That could be a hint but I'm not sure.
8 0
3 years ago
Read 2 more answers
Other questions:
  • The table shows the first 4 terms of the patterns.
    10·2 answers
  • At 9:00 on Saturday morning, two bicyclists heading in opposite directions pass each other on a bicycle path.The bicyclist headi
    12·2 answers
  • On New Years’s Eve, the temperate fell by 24 degrees in a span of 6 hours. By how many degrees did the temperature fall every ho
    15·1 answer
  • State the domain and range of the given relation
    9·1 answer
  • Pease help me quick with ALL the questions ASAP!!!!
    11·2 answers
  • Find the solution to the equation 4r + 2(r - 8) = 4(3 + r).
    12·2 answers
  • The work of a student to solve a set of equations is shown below: m=8+2n; 4m=4+4n. Solve by elimination
    13·1 answer
  • Which graph represents the function f(x) = [X]– 4?
    15·2 answers
  • Write the equation of the line that passes through the given points. (0,-1) and (-11,-4)
    12·1 answer
  • You deposit $1500 in an account that pays 5% interest compounded yearly. Find
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!