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lora16 [44]
2 years ago
7

Trisha's swimming pool is 21 meters by 20 meters. She swam from one corner of the pool to

Mathematics
2 answers:
Alik [6]2 years ago
7 0

Answer:

29 Hope this helps!

Vitek1552 [10]2 years ago
5 0

its 29 m

Step-by-step explanation:

as a²= b²+c²

a²=(21)²+(20)²

a²=841

a=√841

a=29

here we need to consider the diagonal angle of the opposite corner that makes up the rectangle so the answer is 29 which is the diagonal length of the rectangle.

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A satellite dish is shaped like a paraboloid of revolution. The signals that emanate from a satellite strike the surface of the
allochka39001 [22]

Answer:

The receiver must be placed at a distance of 6.125 ft from the center.

Step-by-step explanation:

The dish is of parabola shape with the length of 14 feet and 2 feet deep from the center.

A parabola is a curve which is a set of all points in the plane which are at equal distance away from a given point called focus and given line called directrix.

We have to find out the point at which all the waves comes to one point where the receiver must be placed is the focus of the parabola.

The above scenario is shown in the image which can be converted in mathematical graphical representation of the parabolic curve.

The extreme two end points becomes, (-7,2) and (7,2)

The general equation for such parabola is:

x² = 4ay

where, a is the distance from the center and the focus.

Since, (7,2) satisfy the equation so,

7² = 4a×2

a = 49 /8

Thus,

<u>The receiver must be placed at a distance of 6.125 ft from the center.</u>

5 0
3 years ago
Adrian has 5 times as many stickers as Derrick. If Adrian has 325 stickers, how many stickers does Derrick have?
Arte-miy333 [17]

Answer: 65

Step-by-step explanation:

65 x 5= 325

5 0
3 years ago
It's going to be Lindsay's birthday soon, and her friends Sandy, Jay, and Hakeem have contributed equal amounts of money to buy
avanturin [10]
Each individual contributed $x
3x=$19.50
x=$6.50
Each friend contributed $6.50
5 0
3 years ago
Read 2 more answers
Have to find shaded area of the figure please help need ASAP
ladessa [460]

Answer:

199ft2

Step-by-step explanation:

area) H*W

(16ft×20ft)-(11ft×11ft)

=320ft2-121ft2

<h3>=199ft2</h3>

<em>ft</em><em> </em><em>square</em><em> </em><em>=</em><em>ft</em><em>2</em>

6 0
3 years ago
Please help find missing side length
maria [59]

Answer:

The missing side length is 6.

Step-by-step explanation:

Because the two triangles are similar,

the following equation of ratios is true:

m        4

----- = -----

15       10

Cross-multiplying, we get:

10m = 60, or m = 60/10 = 6

The missing side length is 6.

5 0
3 years ago
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