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erma4kov [3.2K]
3 years ago
8

The sum of a number and two times a smaller number is 62. three times the bigger number exceeds the smaller number by 116. the b

igger number is . the smaller number is
Mathematics
1 answer:
Semmy [17]3 years ago
3 0
X+2y=62
3x-2y=116

solving the simultaneous equations by multiplying first equation by 3;
3x+6y=186
3x-y=116

Subtracting equation II from equation I;
7y=70
y=10
 Replacing y in equation I;

x+20=62
x=42

Bigger number is 42 and smaller number is 20.


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sesenic [268]

Answer:

x=2.7142 y=-2.8571,

Step-by-step explanation:

given 4x-8y=12............(1)

14+2x=-6y

2x+6y=-14..........(2)

from equ (2) multiply by 2

4x+12y=-28............(3)

substruct (1) and (3)

4x-8y-4x-6y=12-(-28)

-14y=40 ,y=\frac{40}{-14}=-2.8571

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M=x^3+y^2-6(x-y)-2021
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Answer:

Step-by-step explanation:

m=x^3+y^2-6(x-y)-2021

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A bag contains 15 blue marbles, 5 red marbles, and 11 green marbles. How many blue marbles must be removed

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7 blue marbles

Step-by-step explanation:

15 blue

5 red

11 green

Total = 31

Number of Blue marbles that must be removed to obtain a probability of :

P(blue) = 1/3

Probability = required outcome / Total possible outcomes

Let number of blue marble to be removed = x

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1/3 = (15 - x) / (31 - x)

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