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Lady bird [3.3K]
3 years ago
7

The circumstance of a circle is 16 ft The radius is_____ ft

Mathematics
1 answer:
kari74 [83]3 years ago
5 0

Answer:

8ft

Step-by-step explanation:

Circumference of a circle equation; πd or2πr

16π = 2πr you can then divide both sides by π

16 = 2r then you can divide both sides by 2

8 = r

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Which is correct classification for the triangle (A) obtuse (B) acute (C)right (D) equiangular
nexus9112 [7]

Answer:

c) Right

Step-by-step explanation:

An Right triangle is a triangle with an angles being 90 degrees and we know that 2 of the angles are 59 and 31 and we know that the sum of all the angles in a triangle will equal 180 so 180-59-31 = 90 so this triangle has a 90 degree angle making it a right triangle

4 0
3 years ago
Thetime(inhours)requiredtorepairamachineis an exponentially distributed random variable with parameter λ = 1 . What is 2 (a) the
mihalych1998 [28]

Answer:

a) 0.1353

b) 0.3679

Step-by-step explanation:

Let's start by defining the random variable T.

T : ''The time (in hours) required to repair a machine''

T ~ exp (λ)

T ~ exp (1)

The probability density function for the exponential distribution is

(In the equation I replaced λ = L)

f(x)=Le^{-Lx}

With L > 0 and x ≥ 0

In this exercise λ = 1 ⇒

f(x)=e^{-x}

For a)

P(T>2)

P(T>2)=1-P(T\leq 2)

P(T>2)=1-\int\limits^2_0 {e^{-x} } \, dx

P(T>2)=1-(-e^{-2}+1)

P(T>2)=e^{-2}=0.1353

For b)

P(T\geq 10/T>9)

The event (T ≥ 10 / T > 9) is equivalent to the event T ≥ 1 so they have the same probability of occur

P(T\geq 10/T>9)=P(T\geq 1)

P(T\geq 1)=1-P(T

P(T\geq 1)=1-(-e^{-1}+1)=e^{-1}=0.3679

4 0
3 years ago
In country X, the average yearly salary of 50-year-olds with 16 years of education is $50,275, while the average yearly salary o
nika2105 [10]

Answer:

38%

Step-by-step explanation:

The additional wage compared 12 years of education to 16 years of education is:

Extra\ wage\%=\frac{50,275-36,265}{36,265} *100 = 38.6%

3 0
3 years ago
The first step in beginning to control your time is
kotegsom [21]
B. DEVELOPING A TIME LOG is the first step in beginning to control you time.

A. A COMBINATION OF LETTERS AND NUMBERS password is used to ensure security.


Time log is basically you recording or logging the activities you have done in a certain time of a day. As you do this daily and check on the log for a few days, you will notice that you have done things that are either unimportant and time consuming, in short time was wasted.
Time log is very helpful especially is you are very busy. It will not only help you manage your tasks in any given time, it will also show you the things you can do in a shorter amount of time and allow you to schedule time for relaxation.

Passwords should be composed of a combination of letter and numbers. Other use special characters just to tighten password security. It is better that users create passwords that may form a special meaning to them so that they will not forget it regardless of length and combination.
7 0
3 years ago
Read 2 more answers
Rodrigo is sitting on the branch of an apple tree. He tosses an apple to a friend who is sitting on the ground.
Travka [436]

Answer: A. The apple takes 8 seconds to reach the ground.

6 0
3 years ago
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