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pentagon [3]
3 years ago
5

Solve the simultaneous equations ! ! 5x+3y=41 ! ! 2x+3y=20

Mathematics
2 answers:
Hatshy [7]3 years ago
7 0

Answer:

1) x= 7 and y =2

Step-by-step explanation:

mark me as brainliest please

iogann1982 [59]3 years ago
4 0

Answer:

x =7

y =2

eqn 1 - eqn2

5x-2x=3x

3y-3y=0

41-20=21

3x=21

x=7

in eqn 1;

5×7)+3y=41

35+3y=41

3y=6

y=2

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-1 mod 19 please show work a =dq+r
kupik [55]

Answer:

The given expression can be written as -1=19(-1)+18.

Step-by-step explanation:

According to quotient remainder theorem:

For any integer a and a positive integer d, there exist unique integers q and r such that

a=d\times q+r

It can also written as

a\text{mod }d=r

The given expression is

-1\text{mod }19

Here a=-1 and d=19.

\frac{-1}{19}=19(-1)+18

-1\text{mod }19=18

If -1 is divides by 19, then the remainder is 18. The value of r is 18.

Therefore the given expression can be written as -1=19(-1)+18.

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4 years ago
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denpristay [2]

Step-by-step explanation:

Sum of 3 by 4 and 7 by 4 is

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Hope it will help :)

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3 years ago
What's 100,994 rounded to the nearest 100?
4vir4ik [10]

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Step-by-step explanation: It would be rounded to 101000 because the nearest 100 would be a 1000.

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3 years ago
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Step-by-step explanation:

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algol [13]

Answer:

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Step-by-step explanation:

Factor the following:

3 x^2 + 20 x + 25

Hint: | Factor 3 x^2 + 20 x + 25 by finding factors of 3×25 whose sum is 20.

Factor the quadratic 3 x^2 + 20 x + 25. The coefficient of x^2 is 3 and the constant term is 25. The product of 3 and 25 is 75. The factors of 75 which sum to 20 are 5 and 15. So 3 x^2 + 20 x + 25 = 3 x^2 + 15 x + 5 x + 25 = 5 (3 x + 5) + x (3 x + 5):

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Factor 3 x + 5 from 5 (3 x + 5) + x (3 x + 5):

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