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Blizzard [7]
4 years ago
8

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?
The standard deviation will
Select a Value
A) decrease.
B) increase.
C) stay the same.
Mathematics
2 answers:
Nataly_w [17]4 years ago
7 0

Answer:decrease, stay the same

Step-by-step explanation:

Mashutka [201]4 years ago
6 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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Given: circle k(O), ED diameter, m∠OEF=32°, m EF=(2x+10)°. Find: x
Snezhnost [94]

Answer:

The value of x is 53\°

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of arc DF

we know that

The inscribed angle measures half that of the arc comprising

so

m

we have

m

substitute

32\°=\frac{1}{2}(arc\ DF)\\ arc\ DF=64\°

step 2

Find the measure of x

we know that

arc\ DF+arc\ EF=180\° ---> is a semi circle

we have

arc\ DF=64\°\\ arc\ EF=(2x+10)\°

substitute

64\°+(2x+10)\°=180\°\\ 2x\°=180\°-74\°\\ 2x\°=106\°\\ x=53\°

4 0
3 years ago
then difference between the cubes of two numbers is twice the value of the perfect square of a possitive Intiger
PSYCHO15rus [73]
There are many solutions. But what do you mean with a perfect square of a number. I thought a number IS a perfect square or not.

For example, the difference between 2² and 4² = 12, which is twice the number 6, which is √36

The difference between 2² and 6² = 32, which is twice the number 16, which is a perfect square.

So choose depending on your interpretation of the question... ;-)
8 0
4 years ago
This distance time graph represents a journey made by Sue.
rosijanka [135]

Answer:

stationary time is 2 hours 30 minutes

Traveling time is 3 hours 30 minutes

Step-by-step explanation:

There are two distinct line types on the graph

the horizontal ones and the ones going towards the upper part

The horizontal ones represent the stationary positions while the climbing one represent the traveling time

The horizontal ones are;

3 to 3:30

4-5

6:30 to 7:30

Time here is ;

30

minutes + 1 hour + 1 hour = 2 hours 30 minutes

The traveling time;

2 - 3

3:30 to 4

5 to 6:30

7:30 to 8

1 + 30 min + 1hr 30 + 30

= 3 hours 30 minutes

3 0
3 years ago
Find the greatest common factor (GCF) for each number set. 56,63<br> 1. 1<br> 2. 6<br> 3. 7
Masteriza [31]
The greatest common factor is 7 .
6 0
3 years ago
this is confusing and my stomach really hurts rn and im not in the mood to do geometry so can someone please help me
nlexa [21]

Answer:

Sorry I don't know about your math but for your stomach you should:

Drink water

Avoiding lying down

Mint

Taking a warm bath or using a heating bag

8 0
3 years ago
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