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konstantin123 [22]
3 years ago
12

Ethan is saving money in his piggy bank for his upcoming trip to Disney World. On the first day, he put in $12 and plans to add

seven more dollars each day.
Part A: Write an explicit formula that can be used to find the amount of money saved on any given day.

Part B: How much money will he have on the 18th day?
Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
7 0

Answer:

A

12+7x=a

x=days

a=amount of money

B 12+7x=a

Step-by-step explanation:

7(18)=126

12+126=a

138=a

Dovator [93]3 years ago
7 0

Step-by-step explanation:

part A:12+7x

first day 12+7=$19

second day 19+7=$26

third day 26+7=$33

....

so

number of moneys on x day will be

12+7*x where x represent the number of days

so

for three days

12+7*3=12+21=33

part B:138

12+7x where x=18

12+7*18=12+126=$138

He will have $138 on the 18th day.

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A rectangular garden must have a perimeter of 150 feet and an area of at least 1200 square feet. describe the possible lengths o
blagie [28]
The possible lengths of the garden would be all of the common factors of 1200.
1 , 1200
2 , 600
3 , 400
4 , 300
5 , 240
6 , 200
7 , 171.43
8 , 150
9 ,  133.33
10 . 120
11 . 109.09
12. 100
13. 92.31
14. 85.71
15. 80
16. 75
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18. 66.67
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And so on. (all of the above are in pairs)
5 0
3 years ago
Read 2 more answers
. A hat contains 100 coins, where 99 are fair but one is double-headed (always landing Heads). A coin is chosen uniformly at ran
SOVA2 [1]

Answer:0.565

Step-by-step explanation:

Hat contain 100 coins out of which 99 is fair and one is double headed.

Probability of getting 7 heads is sum of Head through fair coin+heads through biased coin

Probability of getting a head through a fair coin=0.5

P(7 heads)=0.99\times 0.5^7+0.01\times 1

P(Double head |7 heads )=\frac{Probability\ of\ 7\ heads\ and\ double\ headed}{probability\ of\ 7\ heads}

P(Double head |7 heads )=\frac{0.01\times 1}{0.99\times 0.5^7+0.01\times 1}

=\frac{0.01}{0.99\times 0.0078+0.01}=0.565

8 0
3 years ago
. Choose the correct means and standard deviations for the Sincere and Insincere conditions. Make sure to round to two decimal p
tensa zangetsu [6.8K]

Answer:

C. The rudely disagrees condition has a mean of 4.16 and a standard deviation of 0.85 while the politely disagrees condition has a mean of 3.82 and standard deviation of 0.97

Step-by-step explanation:

The given data is  

                                          x`             Std. Dev      

R. disagrees                  4.16       0.854        

P. disagrees                 3.82       0.967        

From this data we see that the R. disagrees has a mean of 4.16 and standard deviation of 0.854

while

the P. disagrees has a mean of 3.82 and standard deviation of 0.967.

Same figures are given only in option C because

Rounding 0.854 gives 0.85

Rounding 0.967 gives 0.97

So only option C is the best choice.

C. The R. Disagrees condition has a mean of 4.16 and a standard deviation of 0.85 while the P. Disagrees condition has a mean of 3.82 and standard deviation of 0.97

8 0
3 years ago
the graph linear function f passes through the point (1,-9) and a slope.of -3. what is the zero of f?
gizmo_the_mogwai [7]

Answer:

m = 5  ,  ( 1 , 1 ) − 3  ,  ( 1 , 3 ) 3  ,  (2 ,9 )

Step-by-step explanation:

5 0
3 years ago
3. Write 0.368 in<br> scientific notation.
cricket20 [7]

Answer:

3.68 x 10^-1

Step-by-step explanation:

............

5 0
3 years ago
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