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worty [1.4K]
3 years ago
12

Can someone help me plz

Mathematics
1 answer:
Ivan3 years ago
6 0
Wouldent the answer be A because all percents are out of 100 so the 1.9 would be 9 over 100
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Determine the solution to the system of equations:
Morgarella [4.7K]
  x - 3y = 1   ⇒ 3x - 9y = 3
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                                   y = ⁴/₇
                            x - 3y = 1
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6 0
3 years ago
Hello please help thanks
Sloan [31]

Answer:

precipitation

Step-by-step explanation:

7 0
2 years ago
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Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution wi
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Answer:

a) E(X)=1

b) σ=1

c) P(X>1)=0.368

d) P(2<X<5)=0.128

Step-by-step explanation:

We have X: "the time between two successive arrivals at the drive-up window of a local bank", exponentially distributed with λ = 1.

a) We have to compute the expected time between two successive arrivals.

The expected value for X as it is exponentially distributed is:

E(X)=\dfrac{1}{\lambda}=\dfrac{1}{1}=1

b) We have to compute the standard deviation of X.

The standard deviation is calculated as:

\sigma=\dfrac{1}{\lambda}=\dfrac{1}{1}=1

c) The probability that X is larger than 1 (P(X>1))

We can express the probability as:

P(X>t)=e^{-\lambda t}\\\\P(X>1)=e^{-\lambda\cdot 1}=e^{-1}=0.368

d) The probability that X is between 2 and 5 (P(2<X<5))

P(X>t)=e^{-\lambda t}\\\\\\P(25)\\\\P(2

4 0
2 years ago
Triangle ABC was dilated using the rule Do,4. Triangle
AysviL [449]

The value of OB based on the information given about the triangle is 3 units.

<h3>How to illustrate the information?</h3>

It should be noted that dilation is the process of enlarging or shrinking of an object.

In this case, the triangle is dilated. Therefore, the length of OB will be:

= 3/4 × 4 = 3 units.

Therefore, the correct option is B.

Learn more about triangle on:

brainly.com/question/16771919

#SPJ1

8 0
2 years ago
The camp cook made 3 3/5 pots of chicken soup. Each serving of soup is 2/5 of a pot. How many servings of chicken soup did the c
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