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Oduvanchick [21]
3 years ago
12

I need help, we are doing riddles in math class and Im confused.) 1. Buddy and Hermey were both born on christmas eve. When budd

y was 6 years old, hermey was half his age. If buddy turns 100 this christmas eve, how old is hermey going to be?) 2.At a holiday market, the total cost for a cup of hot cocoa and a cookie is $1.80. If a cup of hot cocoa costs $1.00 more than the cookie, how much does a cup of hot cocoa cost?) 3.
Dasher spent half as much as prancer did on holiday presents this year and cupid spent 3 times more than dasher. If the total spent between the three of them was $720, how much did they each spend on gifts?
Mathematics
1 answer:
andreev551 [17]3 years ago
8 0

Answer:

Step-by-step explanation:

for the first one the answer is 97 for the second one the it is hot coco cost 1.40$ and a cookie costs 0.40$ and for the last one it is dasher spent 120$ prancer spent 240$ and cupid spent 360$.

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I need help with this. Both Standard Deviation and the Mean. Both have answer choices of Decrease, Increase, or stay the same.
almond37 [142]

Answer:

The mean will stay the same.

The standard deviation will decrease.

Step-by-step explanation:

For the 5 cards, she has received, the mean will be:

μ=(∑x)/n

=125/5

=25

The mean is 25 and the standard deviation is 10.  

σ=10

If a new card is received with $25, then the sum will be $150  

So the new mean will be:

μ'=(∑x)/n

=150/6

=25

And the new standard deviation will be:  

σ'= 9.12

We can clearly see that  

μ= μ'

and

σ> σ'

So the mean will remain the same and standard deviation will decrease. .

4 0
3 years ago
You will need to flip the inequality sign when you subtract 4 from each side in the inequality + 4 < 9. True False
Len [333]
False, you only flip the inequality if you divide out a negative.
6 0
4 years ago
The two-way table shows the number of people ages 20 and 50 who belong to Group A or B.
BabaBlast [244]
If what you mean by the "percent of people 50 years old belong to group A" is the percentage of 50-year old people with respect to the total number of people belonging to group A, then the answer is

32/(19+32) * 100 = 63%

But, if what you mean is the percentage of 50-year old people in group A with respect to the total number of 50-year old people, then the answer will be

32/(32+24) * 100 =  57%
8 0
3 years ago
‼️‼️‼️‼️‼️ is two correct? Also what’s number 3?‼️‼️‼️‼️
LenaWriter [7]

Answer:

C) P AND E

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please answer the slope of this graph
Lady bird [3.3K]

Answer:

The slope of the line = m = 2

Step-by-step explanation:

Taking two points from the line graph

  • (0, 0)
  • (1, 2)

Determining the slope between (0, 0) and (1, 2)

  • (x₁, y₁) = (0, 0)
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Using the formula

Slope = m =  [y₂ - y₁] /  [x₂ - x₁]

               =  [2 - 0] / [1 - 0]

               = 2 / 1  

               = 2

Thus, the slope of the line = m = 2

7 0
3 years ago
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