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3 years ago

I need x+y=5 and y=2x-4solved algebraically

Mathematics

2 answers:

ipn [44]3 years ago

7 0

X=3, y=2 solved algebraicly

schepotkina [342]3 years ago

4 0

Answer:

x = 3; y = 2

Step-by-step explanation:

x + y = 5

y = 2x - 4

Isolate the y in the first equation

y = 5 - x

y = 2x - 4

Substitute the values

5 - x = 2x - 4

Isolate the Variable

9 = 3x

Simplify

3 = x

Plug that into the first equation

3 + y = 5

Subtract 3 from both sides

y = 2

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Determine whether the function is periodic. If it is, find the period.

Vadim26 [7]

A. periodic; about 6

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4 years ago

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30 POINTS! Combine the like terms of the 2 questions below:

astraxan [27]

Answer:

$\tt 1)\: \boxed{\tt 4y+10}$

$\tt 2)\:\boxed{\tt 0.5x^4+10.5}$

Step-by-step explanation:

1) y + 4 + 3(y + 2)

Expand:-

$\tt y+4+3y+6$

Combine like terms:-

$\tt y+3y+4+6$

$\boxed{\tt 4y+10}$

2) 0.5(x⁴ - 3) + 12

Expand:-

$\tt 0.5x^4-1.5+12$

Add/Subtract Numbers:-

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2 years ago

Compare 2/8 to 1/2 write to explain you step by step

Softa [21]

Answer:

2/8 is one-half as much as 1/2

Step-by-step explanation:

Change the denominators to the same number.

2/8 is already okay

1/2=4/8

now

2/8 would be one-half as much as 4/8

7 0

3 years ago

At a gas station, the price of a regular gas was $3.80 per gallon on monday. the price increased to $3.85 per gallon on tuesday.

notsponge [240]

Monday's gas, $3.80 rounded to the nearest tenth of a dollar would be $3.80 (its already there)
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4 0

4 years ago

Read 2 more answers

Lee spent $36 to purchase a combination of drinks, sandwiches, and chips for himself and his friends. A drink costs $2, a sandwi

valkas [14]

2x+4y+0.50z=36 represents the situation.

Step-by-step explanation:

Let,

Drinks = x

Sandwich = y

And,

Chips = z

Total amount on these items = $36

According to the statement;

$x(cost\ of\ one\ drink)+y(cost\ of\ one\ sandwich)+z(cost\ of\ one\ chips)=\ Total\ amount\ spent\\2x+4y+0.50z=36$

2x+4y+0.50z=36 represents the situation.

Keywords: Linear equations

Learn more about linear equations at:

#LearnwithBrainly

7 0

4 years ago