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pav-90 [236]
3 years ago
11

Use I = PRT to solve. (time in years)

Mathematics
1 answer:
vivado [14]3 years ago
8 0

Simple interest is $ 9

<em><u>Solution:</u></em>

Given that,

P = $ 400

R = 9 \% = \frac{9}{100} = 0.09

T = 0.25 years

<em><u>The formula for simple interest is:</u></em>

I = P \times R \times T

Where,

I is the simple interest earned

R is the rate of interest in decimal

T is the number of years

<em><u>Substituting the values we get,</u></em>

I = 400 \times 0.09 \times 0.25\\\\I = 36 \times 0.25\\\\I = 9

Thus simple interest is $ 9

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(4.1.4) Let X and Y be Bernoulli random variables. Let Z = X + Y. a. Show that if X and Y cannot both be equal to 1, then Z is a
Fynjy0 [20]

Step-by-step explanation:

Given that,

a)

X ~ Bernoulli (p_x) and Y ~ Bernoulli (y_x)

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and Z = 1 when X = 0 and Y = 1 or when X = 1 and Y = 0

If X and Y can not be both equal to 1 , then the probability mass function of the random variable Z takes on the value of 0 for any value of Z other than 0 and 1,

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b)

If X and Y can not be both equal to  1

then,

p_z = P(X=1 or Y=1)\\

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p_z = P(x=1)+P(Y=1)\\\\p_z=p_x+p_y

c)

If both X = 1 and Y = 1 then Z = 2

The possible values of the random variable Z are 0, 1 and 2.

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3 years ago
4(2x + 1) = 2(x - 13)
MakcuM [25]
The answer would be -5.
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What is the solution to the equation 9 cubed x ≈ 7?
yulyashka [42]

<u>Answer</u>

7/729


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The question requires to you to find the value of x.

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729 x = 7

x = 7/729

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