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patriot [66]
3 years ago
6

The Thompson family and the Evans family each used their sprinklers last summer. The water output rate for the Thompson family's

sprinkler was 20 L per
hour. The water output rate for the Evans family's sprinkler was 25 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a
total water output of 1225 L. How long was each sprinkler used?
Mathematics
2 answers:
maw [93]3 years ago
8 0

Answer:

Thompson 30hrs

Evans 25hrs

Step-by-step explanation:

Just take 25 by 25 and 30 by 20

AlexFokin [52]3 years ago
6 0

Answer:

Sprinkles

Step-by-step explanation:

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The box plots below show attendance at a local movie theater and high school basketball games:
cricket20 [7]

The standard deviation is a better measure of spread for movies than it is for basketball games.

<h3>What is box- plot?</h3>

A box plot is a graphical rendition of statistical data based on the minimum, first quartile, median, third quartile, and maximum.

As, Movies is more centric to mean and not skewed on a particular side whereas basketball games is not centric to mean but is skewed right then left.

Now, Standard deviation just measures the deviation or spread with respect to mean of collected data.

So, In the movies the data is more collected. Thus standard deviation is best suited for movie data.

Now, interquartile range. IQR relies on if the data is skewed.

So, in the basketball data the standard deviation will not give the information.

Hence, the  standard deviation is a better measure of spread for movies than it is for basketball games.

Learn more about this concept here:

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5 0
2 years ago
I need help with these two problems. [9 and 10] FORMULAS GIVEN!!
zaharov [31]
<h2>Question 9:</h2>

1. Use Pythagorean Theorem (a²+b²=c²) to solve for missing side of triangle and rectangle. x²+16²=20², or x²+256=400. So, x²=144, and x=12

2. Use formula: 1/2(h)(b1+b2). 1/2 (12) (30+14).

3. Simplify: 1/2 (12) (44)=1/2(528)=264

Area of whole figure is 264 square mm.

<h2>Question 10:</h2>

Literally same thing but with trigonometry.

1. Use sine to find out length of dotted line: sin(60°)=x/12

2: Simplify: 12*sin(60°)=x. x≈10.4 (rounded to the nearest tenth)

3. Use Pythagorean Theorem to find out last leg of triangle: 10.4²+x²=12²

4: Simplify: 108.16 +x²=144. x²=35.84 ≈ 6

5: Use formula: 1/2(h)(b1+b2). 1/2 (10.4) (30+36)

6: Simplify: 1/2 (10.4) (66) =343.2

7: Area of figure is about 343.2

Remember, this is an approximate answer with rounding, so it might not be what your teacher wants. The best thing to do is do it yourself again.

4 0
3 years ago
What is the y-intercept of y = -3x?
Greeley [361]

Answer:

( 0, 0 )

Step-by-step explanation:

In this equation, you can see that there is not y-intercept, and since there is no y-intercept, that means that it will be "0", and that the line goes straight to the origin ( 0, 0 )

Hope this helped!

Have a supercalifragilisticexpialidocious day!

8 0
3 years ago
josiah is taking his friends to the movies each ticket cost $10, and popcorn is $5 a bag. there is a 3$ service fee for the enti
amid [387]

Answer:

10x+5y+<=75

Step-by-step explanation:

8 0
3 years ago
Tung rotates a square around its horizontal axis of symmetry to make a solid figure. What is the shape of the vertical cross sec
Iteru [2.4K]

The shape of the vertical cross section of the solid figure is Circle , Option A is the right answer.

What is a Circle ?

A circle is a round figure with all the points lying in the same plane .

It is given that

Tung rotates a square around its horizontal axis of symmetry to make a solid figure.

the shape of the vertical cross section of the solid figure will be a circle that can be seen in the image attached

The rotation image is also attached and the horizontal axis is taken as straight to show the formation of a circle.

Therefore Option A is the right answer.

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4 0
2 years ago
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