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vichka [17]
2 years ago
11

Which are perfect squares? Check all that apply.

Mathematics
1 answer:
zmey [24]2 years ago
4 0

Answer:16,625,169,9

Step-by-step explanation:

Find the square root of the number and if it’s even and there’s no decimal than it’s a perfect square

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Q2. A train travels at a constant speed of 45 m/s. a) Calculate the distance travelled by the train in:
alex41 [277]

Answer:

i) 1350 m

ii) 5400 m

Step-by-step explanation:

<u>Formula for Speed</u>

\boxed{\sf Speed=\dfrac{Distance}{Time}}

Rearrange the formula so that Distance is the subject:

\implies \sf Distance = Speed \times Time

<h3><u>Question (i)</u></h3>

Given:

  • Speed = 45 m/s (meters per second)
  • Time = 30 seconds

Substitute the given values into the formula for distance:

\implies \sf Distance = 45 \times 30 = 1350\:m

<h3><u>Question (ii)</u></h3>

Given:

  • Speed = 45 m/s (meters per second)
  • Time = 2 minutes

As the time is given in a different unit of time as the speed, we must first convert the time into seconds:

1 minute = 60 seconds

⇒ 2 minutes = 60 × 2 = 120 seconds

Therefore:

  • Speed = 45 m/s (meters per second)
  • Time = 120 seconds

Substitute the values into the formula for distance:

\implies \sf Distance = 45 \times 120 = 5400\:m

3 0
9 months ago
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Find the next term.<br><br> −6, −9, −12, −15, −18, . . .
ycow [4]

Answer:

-21 is the answer , hope it helps

Step-by-step explanation:

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3 years ago
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Figure ABCD is rotated by 180 degrees about the origin in the counterclockwise direction to obtain figure A′B′C′D′:
Gemiola [76]

Answer:

Length of AB = Length of C′D′

Length of CD = Length of B′C′

Step-by-step explanation:

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2 years ago
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Which of the following rational functions is graphed below?
lukranit [14]

<h2>1 \: root \: solving\: f(x) = 0 \\ x = 0 \\  \\ vertical \: asymptote \: at \\ x = 1 \:  \:  \: and \:  \:  \: x =  - 4 \\  \\ f(x) =  \frac{x}{(x  + 4)(x - 1)}</h2><h2>Option C</h2>

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4 0
1 year ago
Type your answer in the box. <br><br> y = 10 b = 6
blondinia [14]

Answer:

The answer is -60 (I believe)

Step-by-step explanation:

3(-10)-5(6)

-30-30 = -30+-30

-30+-30= -60

The answer is -60

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2 years ago
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