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natita [175]
2 years ago
5

Jerimiah records lap times at the track meet on Saturday. He records a time of 85 seconds for Jennifer's lap, but she really com

pleted the lap in 84.25 seconds.
What is the approximate percentage of error in Jerimiah's measure?
Mathematics
2 answers:
rosijanka [135]2 years ago
8 0

Answer:

I'm not sure. What I would do, though, is find the difference of the two times and then find the percentage of that within the original time. So the difference is .75. So the percentage would be .25%. Just an educated guess.

VMariaS [17]2 years ago
6 0

Answer:

To be honest I'm not sure.

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Solve the system of equations using any method. HELP ME PLEASEEEEE!!!!!!
almond37 [142]

The answer is D, (1/3, 4).

Hope this helped!


7 0
3 years ago
A poker hand consisting of 7 cards is dealt from a standard deck of 52 cards. Find the probability that the hand contains exactl
77julia77 [94]

Answer:

The probability is 2,010,580/13,378,456

Step-by-step explanation:

Here is a combination problem.

We want to 7 cards from a total of 52.

The number of ways to do this is 52C7 ways.

Also, we know there are 12 face cards in a standard deck of cards.

So we are selecting 3 face cards from this total of 12.

So also the number of cards which are not face cards are 52-12 = 40 cards

Out of all these 40, we shall be selecting exactly 4. The number of ways to do this 40C4

Thus, the required probability will be;

(40C4 * 12C3)/52C7 = (91,390 * 220)/133,784,560

= 20,105,800/133,784,560 = 2,010,580/13,378,456

7 0
3 years ago
What is the median of the data?
eimsori [14]
<span>20, 19, 13, 23, 16, 15, 17, 17, 15, 15, 22, 19

</span>To find the Median, place the numbers in value order<span> and find the </span>middle<span>.
</span>
13, 15, 15, 15, 16, 17, 17, 19, 19, 20, 22, 23

There are 12 numbers and so we don't have just one middle number, we have a pair of middle numbers:


13, 15, 15, 15, 16, (17, 17), 19, 19, 20, 22, 23

<span>To find the value halfway between them, add them together and divide by 2:
</span>
17 + 17 = 34
34 ÷ 2 = 17

So the median is A) 17.

8 0
3 years ago
What is m∠A ?<br><br><br><br> Enter your answer in the box<br><br> |___|
Ilya [14]
We know that the sum of all angles in a triangle = 180°

Angle (A+B+C) = 180°

or

(3x°+13) + (x°-8) + x° = 180

5x° + 5 = 180°===> 5x° = 175° &  x =35°
7 0
3 years ago
Read 2 more answers
The square root of 181 lies between?
Sergeeva-Olga [200]

Answer: 13 and 14

Step-by-step explanation:

13^2=169

14^2=196

181 is between 169 and 196.

Thus, the square root of 181 is between 13 and 14

Hope it helps <3

7 0
3 years ago
Read 2 more answers
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