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3 years ago

What is the solution to the following system of equations? x+y=5 x-y=1 step by step

1 answer:

8 0

x+y=5
-x -x

Equals:

y=-x+5

Now you have:

y=-x+5
x-y=1

Insert -x+5 into y

x-x+5=1

Combine like terms

2x+5=1

Subtract 5.

2x=-4

Divide 2.

Answer: x=-2

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Define the term isomer

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Physics: each of two or more atomic nuclei that have the same atomic number and the same mass number but different energy states.

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3 years ago

Read 2 more answers

A group of students goes out to lunch. If two have burritos and five have tacos, the bill will be $19.50. If five students have

nikklg [1K]

Answer:

The price of the burrito is $3.5 and the price of the taco is $2.5.

Step-by-step explanation:

2x+5y=19.5

5x+2y=22.5

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

5(2x+5y)=5(19.5)

-2(5x+2y)=-2(22.5)

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

10x+25y=97.5

-10x-4y=-45

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21y=52.5

y=52.5/21=2.5

2x+5(2.5)=19.5

2x+12.5=19.5

2x=19.5-12.5

2x=7

x=7/2=3.5

x=3.5, y=2.5

The price of the burrito is $3.5 and the price of the taco is $2.5.

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3 years ago

Rewrite the following fraction as a decimal. 19/25.

sveticcg [70]

0.76 is by a decimal

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3 years ago

Write an equation of the line that passes through (-1,2) with a slope of 4

Iteru [2.4K]

Step-by-step explanation:

Hey there!

Given;

The points is; (-1 , 2) and slope is 4.

Note: Use one-point formula.

$(y - y1) = m(x - x1)$

~ Put all values.

$(y - 2) = 4(x + 1)$

~ Simplify it.

$(y - 2) = 4x + 4$

$4x - y + 6 = 0$

Therefore, the required equation is; 4x-y+6=0.

<h3>Hope it helps...</h3>

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3 years ago

A number b is at most 9

Travka [436]

b ≤ 9 (b is less than or equal to 9)

Hope this helps! ;)

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3 years ago