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alexdok [17]
3 years ago
6

What is the value of x HELPPPPPPPPPP PLZZZZZZZZZZZZ

Mathematics
1 answer:
natali 33 [55]3 years ago
3 0

Answer:

Answer is D.

30

Step-by-step explanation:

all angles add up to 180(applys to triangles)

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What is the solution to the proportion? 9/x=4/12 Answers: A. 13 B. 27 C. 17 D. 3
Oksana_A [137]
9*12=108
4*x=4x
so,  4x/108
4x=108
x=27
7 0
3 years ago
Read 2 more answers
businessText message users receive or send an average of 62.7 text messages per day. How many text messages does a text message
KiRa [710]

Answer:

(a) The probability that a text message user receives or sends three messages per hour is 0.2180.

(b) The probability that a text message user receives or sends more than three messages per hour is 0.2667.

Step-by-step explanation:

Let <em>X</em> = number of text messages receive or send in an hour.

The random variable <em>X</em> follows a Poisson distribution with parameter <em>λ</em>.

It is provided that users receive or send 62.7 text messages in 24 hours.

Then the average number of text messages received or sent in an hour is: \lambda=\frac{62.7}{24}= 2.6125.

The probability of a random variable can be computed using the formula:

P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!} ;\ x=0, 1, 2, 3, ...

(a)

Compute the probability that a text message user receives or sends three messages per hour as follows:

P(X=3)=\frac{e^{-2.6125}(2.6125)^{3}}{3!} =0.21798\approx0.2180

Thus, the probability that a text message user receives or sends three messages per hour is 0.2180.

(b)

Compute the probability that a text message user receives or sends more than three messages per hour as follows:

P (X > 3) = 1 - P (X ≤ 3)

              = 1 - P (X = 0) - P (X = 1) - P (X = 2) - P (X = 3)

             =1-\frac{e^{-2.6125}(2.6125)^{0}}{0!}-\frac{e^{-2.6125}(2.6125)^{1}}{1!}-\frac{e^{-2.6125}(2.6125)^{2}}{2!}-\frac{e^{-2.6125}(2.6125)^{3}}{3!}\\=1-0.0734-0.1916-0.2503-0.2180\\=0.2667

Thus, the probability that a text message user receives or sends more than three messages per hour is 0.2667.

6 0
3 years ago
When BA=10 ft, find the area of the region that is NOT shaded. Round to the nearest whole number. (reply so i can draw it out, p
nexus9112 [7]
The area of the region that is not shaded in the diagram is determined through the following solution:

<span>A = <span>(1 − (<span><span>60°/</span><span>360°</span></span>)*</span>π) * (10 ft ) ^<span>2</span></span> <span>A = <span>56*</span>π*100 [<span>ft2</span>]</span> <span><span>A = <span>250/3 </span>π [<span>ft2</span>]
A = 262 [ft2]</span></span>
5 0
3 years ago
What’s the answer to this please I give 5 star and brainliest
Gemiola [76]

Answer:

I think its a im not 100% sure though.

Step-by-step explanation:

Can i have brainliest

8 0
3 years ago
URGENT] <br>What is the perimeter of the figure? 28 m 22 m 20 m 14 m
egoroff_w [7]

Answer:

20m

Step-by-step explanation:

5+3+1+7+4=20

8 0
3 years ago
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