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Bingel [31]
3 years ago
6

The sum of two numbers is 23. The first number is 3/20 of the second number. What are the numbers?

Mathematics
2 answers:
Lapatulllka [165]3 years ago
7 0

Answer:

3 and 20

Step-by-step explanation:

We have 2 numbers, we will call them a and b.

We have: <u>a = </u>\frac{3}{20}<u>b </u>and <u>a + b = 23</u>

=> \frac{3}{20}b + b = 23

=> \frac{23b}{20} = 23

=> 23b = 460

=> <em>b = 20</em>

=> <em>a = 3</em>

Thepotemich [5.8K]3 years ago
6 0

Answer:

Here's what i know:

x + y = 23

3y / 20 =x

 

Here we can use substitution to help find our answer:

y + 3y/20 = 23

20y/20 + 3y/20 = 23

23y/20 = 23

23y = 23 * 20

y = 23 * 20 / 23

y = 20

 

x + 20 = 23

x = 3

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Fynjy0 [20]

Step-by-step explanation:

Given that,

a)

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

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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)\\

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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

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7 0
3 years ago
If a car can go 300 miles on 12 gallons, how far can it go on 1 gallon
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Answer:

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8 0
3 years ago
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what are two practical products you could add to find 990 x 37 ; 297 693 2970 6930 69300 6330 29700
VMariaS [17]
First evaluate 990 x 37.
990 x 37 = 36630

Test the given numbers to find the pair that adds up to 36630.
Test 297.
The missing pair will be
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Test 693.
36630 - 693 = 35937
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Test 2970.
36630 - 2970 = 33660
Will not work

Test 6930
36630 - 6930 = 29700
This works, because 6930 + 29700 = 36630.

Answer: 6930 and 29700.


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