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Reil [10]
3 years ago
9

A 12ft by 15ft rectangular swimming pool has a 3ft wide no slip surface around it. What is the outer perimeter of the no-slip su

rface? . A- 78ft. B-78ft^2. C-198ft. D-198ft^2
Mathematics
2 answers:
ahrayia [7]3 years ago
8 0
First you add 3 twice to both sides of the swimming pool
12 + 6 = 18
15 + 6 = 21

The perimeter is the sum of all sides therefore 

18 + 18 + 21 + 21 = 78

The answer is A
Gnesinka [82]3 years ago
7 0

Answer:

This is the Multiple choice answers.

Step-by-step explanation:

1: 78 ft

2: 4.4 π

3: 36 units

4: 131/3yd²

5: 6.25 π in.²

6:  36

7: (2,0)

Hope this helps!

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Two numbers are greater than 10 but les than 40. Their GCF is 17. What are the numbers?
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2) What is 8% of 24.52? Round your answer to the nearest hundredth.
alexgriva [62]

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4 years ago
Read 2 more answers
The number of people estimated to vote in an election was 7000. The actual number of people who voted was 5600
baherus [9]

Answer:

If you mean the percentage error then look at this

Step-by-step explanation:

% error = <u>Estimated </u><u>-</u><u> </u><u>Actual </u> x <u>100 </u>

Estimated. 1

% error = <u>7000 - 5600</u> x <u>100 </u>

7000. 1

% error = <u>1400 x </u><u>100</u>

7000

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6 0
2 years ago
HELPPP PLEASE!!!<br> What is the interior angle sum of a shape that has 45 sides?
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Hope this helps!
7 0
3 years ago
Question 2 - Signal and System Properties. State whether each of the statements is true or false. Note that a statement is true
gregori [183]

Answer:

  (a) true

  (b) true

  (c) false; {y = x, t < 1; y = 2x, t ≥ 1}

  (d) false; y = 200x for .005 < |x| < 1

Step-by-step explanation:

(a)  "s(t) is periodic with period T" means s(t) = s(t+nT) for any integer n. Since values of n may be of the form n = 2m for any integer m, then this also means ...

  s(t) = s(t +2mt) = s(t +m(2T)) . . . for any integer m

This equation matches the form of a function periodic with period 2T.

__

(b) A system being linear means the output for the sum of two inputs is the sum of the outputs from the separate inputs:

  s(a) +s(b) = s(a+b) . . . . definition of linear function

Then if a=b, you have

  2s(a) = s(2a)

__

(c) The output from a time-shifted input will only be the time-shifted output of the unshifted input if the system is time-invariant. The problem conditions here don't require that. A system can be "linear continuous time" and still be time-varying.

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(d) A restriction on an input magnitude does not mean the same restriction applies to the output magnitude. The system may have gain, for example.

6 0
4 years ago
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