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spin [16.1K]
3 years ago
10

On a 3-week vacation to Paris, Martha's expenses for food, gifts, and accommodations was 80$ less than 3 times her airfare. If t

he total expenses for the trip was 2, 660, how much was her airfare

Mathematics
1 answer:
Nady [450]3 years ago
5 0
Martha’s airfare is$2410
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3 years ago
Y^2 isolate 19x^2+4y^2=25
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Answer:

Simplifying

x2 + -4y2 = 25

Solving

x2 + -4y2 = 25

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4y2' to each side of the equation.

x2 + -4y2 + 4y2 = 25 + 4y2

Combine like terms: -4y2 + 4y2 = 0

x2 + 0 = 25 + 4y2

x2 = 25 + 4y2

Simplifying

x2 = 25 + 4y2

Reorder the terms:

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Reorder the terms:

-25 + x2 + -4y2 = 25 + -25 + 4y2 + -4y2

Combine like terms: 25 + -25 = 0

-25 + x2 + -4y2 = 0 + 4y2 + -4y2

-25 + x2 + -4y2 = 4y2 + -4y2

Combine like terms: 4y2 + -4y2 = 0

-25 + x2 + -4y2 = 0

The solution to this equation could not be determined.

Step-by-step         sorry if im wrong

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3 years ago
Do alternate interior angles add to 180 degrees
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Yes, they can add up to 180 degrees. Say one angle is 65 degrees, and the other one is 115 degrees. That would equal to 180 degrees.
Hope this helps.
3 0
3 years ago
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andrey2020 [161]

Given:

Normal price of a tv = $200

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To find:

The money saved by Katherine.

Solution:

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3 years ago
Find the sum of -75 and 105​
Elan Coil [88]

Answer:

Sum is 30

Explanation:

6 0
3 years ago
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