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BaLLatris [955]
4 years ago
11

How many three-digit positive integers exist, all of whose digits are 2's and/or 5's?

Mathematics
1 answer:
vfiekz [6]4 years ago
3 0

Answer:

  8

Step-by-step explanation:

There are two choices for each digit, and 3 digits, so 2^3 = 8 possible numbers. Here's a list:

  222, 225, 252, 255

  522, 525, 552, 555

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solong [7]
The actual dimension of the sail are 6 m tall and 4.5 m wide.

The model is 20 cm tall. First we need to find the ratio which Kendall used in his model.

6 meters of actual length is represented in model by 20 cm.

6 meters of actual length is represented in the model by 0.2 m.

1 meter of actual length is represented in the model by 0.2/6 = 1/30 meters

So, the ratio of actual measure to model measure will be:

1 : 1/30

or

30 : 1

The actual width of the sail = 4.5 meters
The width of the sail in the model will be = 4.5 x 1/30 = 0.15 m = 15cm

So, the dimensions of the sail in the model will be 20 cm tall and 15 cm wide.
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3 years ago
Stacy’s goal is to run at an average speed of 1 mile per 10 minutes. What is the number of laps that she must run in 1/2 hour to
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
Explain how solving -7y &gt; 161 is different from solving 7y &gt; -161. <br><br> 15 points
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Is the following relation a function?<br> (1,4),(-1,-2),(3,10),(5,16)
algol [13]

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3 years ago
The lines graphed below are parallel the slope of the red line is 3 what is the slope of the green line
Veseljchak [2.6K]

Answer:

\large\boxed{m=3}

Step-by-step explanation:

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8 0
3 years ago
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