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ycow [4]
3 years ago
13

What is the height of the tv and is it square inches or inches ??

Mathematics
2 answers:
fiasKO [112]3 years ago
7 0
To find the height of the TV you first need to realize that the question is giving you dimensions for a triangle. 

Every triangle has a hypotenuse and two sides. To find the hypotenuse you square both sides, add them, and then square root. So to find one of the sides you get the hypotenuse, square it, and subtract the square length of the given side. 

The equation is 25^2-20^2.
Which if simplified is 625-400, the then solution is going to be 225. 
You next will square root 225, 225^(1/2). Which your answer should be 15 inches for the missing side length.
Helen [10]3 years ago
5 0
The answer is 15 inches.  Not squared.  You can use the Pythagorean theorem.   
Since the diagonal is 25, that is the hypotenuse, and the base, which is 20, is the bottom leg, then the missing side is the height.  
20^2 + b^2 = 25^2
400 + b^2 = 625
b^2 = sqrt(625-400)
b = sqrt 225
b=15
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Kimberly goes on a road trip; her car gets 25 miles per gallon (mpg) and gas costs $3.24 per gallon. Let n represent the number
LenKa [72]

Answer:

a) 10.08 gallons and $32.66 of gas

b) gallons used = n/25

c)cost of the gasoline = \frac{n}{25}(3.24)

Step-by-step explanation:

a) We know that Kimberly has traveled 252 miles and we also know that her car gets 25 miles per gallon. We can apply proportions and rule of three:

25 miles ------ 1 gallon

252 miles ----- x gallons

Solving for x:

x gallons = 252 miles(1 gallon)/25 miles= 10.08 gallons.

Thus, she has used 10.08 gallons since she started driving.

Now we need to know the cost of the gasoline that she has used.

We know that each gallon of gas costs $3.24 and she has used 10.08 gallons. Again, we can apply proportions and rule of three:

1 gallon ------ 3.24 dollars

10.08 gallons---- x dollars.

Solving for x we get:

x=(10.08)(3.24)= 32.659=32.66 dollars.

Thus, she has used $32.66 of gas since she started driving.

<u />

<u>b) Write an expression in terms of n that represents the number of gallons of gasoline she has used since she started driving.</u>

If we know that n is the number of miles that she drives, from what we wrote above, an expression to know the number of gallons she has used would be:

Gallons used = n/25 (since her car gets 25 miles per gallon) where n is the number of miles.

<u>c) Write an expression in terms of n that represents the cost of the gasoline that she has used since she started driving.</u>

Again, to know the cost of the gasoline we first need to know how many gallons she has used. From b) we know that the expression to know how many gallons she has used is n/25. Since each gallon costs $3.24 we will multiply this number by n/25 and we will get the cost (like we did in a))

Therefore, the cost of the gasoline = \frac{n}{25}(3.24) where n is the number of miles.

6 0
3 years ago
annalise makes rectangular patchworks quilts out of leftover fabric scraps. the first scrap she is using to make a quilt has a w
tester [92]

The area is given by f(x) = 10x² + 31x + 15.

The function is a rectangle's area function.

Rectangle Area = Length * Width

The length of fabric scrap is 5x. So, the rectangular patchwork's length will be 5x + 3.

Since the width of the fabric scrap will be 2x, the rectangular patchwork's width will be 2x + 5.

Then area = f(x) = (5x + 3)(2x + 5) = 10x² + 25x + 6x + 15 = 10x² + 31x + 15

Therefore the area is given by f(x) = 10x² + 31x + 15.

Learn more about the area here -

brainly.com/question/13293720

#SPJ10

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2 years ago
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77julia77 [94]

Answer:

A=3Bz/2

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Step-by-step explanation:

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1 year ago
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Monica [59]

Answer:

X=13

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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