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disa [49]
3 years ago
13

Find the area of this circle. Use 3.14 to approximate A = ar2 20 ft

Mathematics
2 answers:
trasher [3.6K]3 years ago
6 0

Answer:

314

Step-by-step explanation:

ikadub [295]3 years ago
5 0

Answer:

314

Step-by-step explanation:

R= half of d

d= 20

20/2= 10

r=10

Plug into formula:

3.14(10)^2

= 314

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Which statement completes the proof that the sum of the angles of triangle PRQ is 180°? Statement Justification
vichka [17]
M∠1 + m∠RPQ + m∠5 = 180° Definition of a Straight Angle

proof :  mes1= PRQ (alternate interior)

RPQ = 3 Opposite angle (vertex)
5 =Q  (alternate interior)
PRQ + RPQ + RQP = 180
7 0
4 years ago
Read 2 more answers
The probability of drawing a heart from a standard deck of cards is 0.25. You record the car do you draw and return the car befo
Licemer1 [7]

Answer: C) 0.112

Step-by-step explanation:

In binomial distribution with parameters n (Total trails) and p (probability of getting success sin each trial) , the probability of getting success in x trials is given by :-

P(X=x)=^nC_xp^x(1-p)^{n-x}

Given : The probability of drawing a heart from a standard deck of cards is 0.25

Here , getting heart is the success.

Then p= 0.25

For n= 20

The probability that you will draw a heart seven times i.e. x= 7:

P(X=7)=^{20}C_7(0.25)^7(1-0.25)^{20-7}

P(X=7)=\dfrac{20!}{7!(20-7)!}(0.25)^7(1-0.25)^{20-7}\ \ [\because\ ^nC_r=\dfrac{n!}{r!(n-r)!}]

=\dfrac{20\times19\times18\times17\times16\times15\times14\times13!}{7!13!}(0.25)^7(0.75)^{13}\\\\=77520(0.00006103515625)(0.0237572640181)\\\\=0.112406195476\approx0.112

Hence, the probability that you will draw a heart seven times = 0.112

Thus , the correct answer is C) 0.112 .

8 0
3 years ago
1. If Jeremy found 80% of the collector cards and Tim found 41 of the 45 cards,
baherus [9]

Answer:

Tim has more

Step-by-step explanation:

41/45 when you type it into a calculator is 91% and 91%>80%

6 0
3 years ago
A ball is tossed up in the air at an initial rate of 50 ft/sec from 5 ft off the ground.
Fofino [41]

Answer with Step-by-step explanation:

Since we have given that

Initial velocity = 50 ft/sec = v_0

Initial height of ball = 5 feet = h_0

a. What type of function models the height (ℎ, in feet) of the ball after tt seconds?

As we know the function for height h with respect to time 't'.

h(t)=-16t^2+v_0t+h_0\\\\h(t)=-16t^2+50t+5

b. Explain what is happening to the height of the ball as it travels over a period of time (in tt seconds).

What function models the height, ℎ (in feet), of the ball over a period of time (in tt seconds)?

if it travels over a period of time then time becomes continuous interval . so it will use integration over a period of time

Our function becomes,

h(t)=\int\limits^t_0 {-16t^2+50t+5} \, dt

3 0
3 years ago
Find the prime factor of the number 3825.​
Masja [62]

Answer:

the answer is 3×3×5×5×17=3825 use prime factorization

3 0
3 years ago
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