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borishaifa [10]
11 months ago
11

John is 5 years younger than three times his brother’s age. If the sum of their

Mathematics
2 answers:
torisob [31]11 months ago
8 0

Answer:

I think 10

Step-by-step explanation:

Murrr4er [49]11 months ago
8 0

Answer:

John is 9

Step-by-step explanation:

(9*3)-5=22+9=31

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Is it, A, B, C, Or D?
trasher [3.6K]

Answer:

C

Step-by-step explanation:

6(2m+5n)

12m+30n

Jacob had multiplied 6 to 2m right which is 12m but multiplied 6 and 5n wrong as he thought it was 11n yet it is 30n.

4 0
2 years ago
Simplify V45 (square root 45) fully, giving your answer in the form aVb (square root)
inna [77]

Answer:

B

Step-by-step explanation:

7 0
2 years ago
(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)

X + Y = Z

The possible value for Z are Z = 0 when X = 0 and Y = 0

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,

Therefore Z is a Bernoulli random variable

b)

If X and Y can not be both equal to  1

then,

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

p_z = P(X=1)+P(Y=1)-P(=1 and Y =1)

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.

since a  Bernoulli variable should be take on only values 0 and 1 the random variable Z does not have Bernoulli distribution

7 0
3 years ago
Robert climbed 775 steps in 12 1/2 minutes. How many steps did he average per minute
Archy [21]
775 steps across 12.5 minutes = 775/12.5 = 62 steps per minute
6 0
3 years ago
roger has a nail that is 12 centimeters long. he measures and records the length of the nail as 15 centimeters. what is the % er
Marianna [84]
15-12=3. 3/12=1/4=25% error
4 0
2 years ago
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