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3 years ago

X+y=5 2x - y = 1 Need help

Mathematics

2 answers:

erma4kov [3.2K]3 years ago

8 0

Answer:

y = 3

x = 2

Step-by-step explanation:

x+y=5 == -2x - 2y = -10

2x-y = 1 == 2x - y = 1 +

-------------------

-3y = -9

y = 3

x + y = 5

x + 3 = 5

x = 2

Ber [7]3 years ago

5 0

(2,3)

Step-by-Step:

(1) x+y=5
2x-y=1

(2) add column by column (positive y plus negative y cancels out, equaling 0)

3x=6

(3) divide both sides be 3

x=2

(4) sub 2 in for x for either equation ( i chose the top one)

2+y=5

(5) subtract 2 from both sides

y=3

(6) put your answer in ordered pairs

(2,3)

Hope this helps

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Read 2 more answers

Total world consumption of iron was approximately 900 million tons in 1993. If consumption had increased by 2.5% each year and t

Lilit [14]

Step-by-step explanation:

We can model the annual consumption of iron by the equation

c = 900 million tons x $1.025^n$ , where

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An estimate for the total consumption of iron can now be obtained by integrating this equation with respect to a dummy variable, x from 0 to n.

$C = 900*10^6* \int\limits^n_0 {1.025^x} \, dx$

This equation simplifies to

C = 900 million tons x (1.025^n - 1) / ln(1.025), where

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2 years ago

How to Divide 80 into the given Fractions

Virty [35]

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3 years ago

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Answer:

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From this, Null Hypothesis, $H_0$ : $p_1 = p_2$ {means proportion of male and female college students who worked for pay last summer are same}

Alternate Hypothesis, $H_1$ : $p_1\neq p_2$ {means there is a difference in the proportion of male and female college students who worked for pay last summer}

Now, since we know that results were statistically significant at the 1% level.

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3 years ago