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ad-work [718]
3 years ago
8

7x + 10y = 96; 5x - 2y = 32

Mathematics
1 answer:
Andrew [12]3 years ago
3 0

Answer:

x=8, y=4

Step-by-step explanation:

7x + 10y = 96

5(5x - 2y = 32)

7x + 10y = 96

25x - 10y = 160

32x = 256

x = 8

7(8) + 10y = 96

56 + 10y = 96

10y = 40

y = 4

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What are the relative frequencies, to the nearest hundredth, of the rows of the two way table?
Nookie1986 [14]

Answer:            A         B

Group A        0.25      0.75

Group B        0.45      0.55

Step-by-step explanation:

Since we have given that

Number of people of A in Group A = 15

Number of people of B in Group A = 45

Number of people of A in Group B = 20

Number of people of B in Group B = 25

Total number of people in Group A = 15+45 = 60

Total number of people in Group B = 20+25 = 45

So, Relative frequencies will be given  below:

Relative frequency of A in Group A is given by

\frac{15}{60}=0.25

Relative frequency of B in Group A is given by

\frac{45}{60}=0.75

Relative frequency of A in Group B is given by

\frac{20}{45}=0.45

Relative frequency of B in Group B is given by

\frac{25}{45}=0.55

Hence,             A         B

Group A        0.25      0.75

Group B        0.45      0.55

5 0
4 years ago
Among all pairs of numbers whose difference is 10
lawyer [7]
11 and 1. 11 times 1 = 11. I double-dare ya to find a different pair with a smaller product.
4 0
3 years ago
Read 2 more answers
Find the inverse of square root f(n) = n – 3.
pogonyaev

Answer:

f'(n) = n + 3

Step-by-step explanation:

Given

f(n) = n - 3

Required

The inverse

f(n) = n - 3

Replace f(n) with y

y = n - 3

Swap positions of y and n

n = y - 3

Make y the subject

y = n + 3

Replace y with f'(n)

f'(n) = n + 3

4 0
3 years ago
You have a bucket with 7 green ping pong balls, 13 black ping pong balls, and 9 red ping pong balls.
elixir [45]

Answer:

Step-by-step explanation:

A. In each drawing, the odds of choosing green is 7 / (7 + 13 + 9) = 7/29

with replacement, the odds in each drawing are the same

7/29•7/29•7/29 = 7³/39³ = 343 / 24,389

B.

Odds of drawing all non black balls is the sum of odds of drawing the following possible patterns

 ggg  +   ggr   +   grg   +   rgg  +   rrg   +    rgr   +    grr   +   rrr

(7•6•5 + 7•6•9 + 7•9•6 + 9•7•6 + 9•8•7 + 9•7•8 + 7•9•8 + 9•8•7) / 29•28•27 = 3,360/21,924

3 0
3 years ago
How to simplify 333/1000
Zolol [24]
This fraction cannot be simplified to a lower fraction because it is alredy in lowest terms

6 0
3 years ago
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