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baherus [9]
3 years ago
14

Melissa’s birthday is next week and she has been receiving cards in the mail with different amounts of money. She has received 5

cards with the following amounts: $10, $20, $ 25, $30, $40. If Melissa receives one more card in the mail with $25, which of the following will happen?
Mathematics
1 answer:
nasty-shy [4]3 years ago
3 0

Currently, the standard deviation is 10, because on average the cards were $10 away from the mean.

Adding another card with value $25 would decrease the standard deviation because it is closer to the mean the the current standard deviation.
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natali 33 [55]

Answer:

37in.^2

Step-by-step explanation:

So if the triangles at the top have a hypotenuse of 5, and a length of 4, then doing reverse Pythagorean theorem, you find out that the width is 3.a^{2} +b^{2} =c^{2}. so reverse of that for this problem would be c^{2} -b^{2} =a^{2} and if we plug it in, we get 25 -16=9 and the square root of 9 is 3. so if we find the are of the triangle, 3*4*1/2=6 and there are 2 triangles so 12 for both triangles. The square is 5*4=20. and the smaller triangles on the side are 1*5*1/2=2.5, and there are 2 traingles so 2.5*2= 5. So 5+20+12=37. You can do this on most calculators, and please put my answer as the brainliest.✌

4 0
2 years ago
Can I get these answers asap, please?
ASHA 777 [7]

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1) -5b + 16

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
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sladkih [1.3K]

Answer:

6- 8- 10 triangle with 10 as the hypotenuse

Step-by-step explanation:

In any right triangle the hypotenuse must be the longest side.

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Also using Pythagoras' identity

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Firdavs [7]

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