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salantis [7]
3 years ago
10

Currently you have $80 and your sister has $145. You decide to save $6 of you allowance each week, while your sister decides to

spent her whole allowance plus $7 each week. How long will it be before you have the same about of money
Mathematics
1 answer:
Bas_tet [7]3 years ago
7 0

You can solve the problem this way:

Your money is increading $6 a week while sister's is decreasing $7 a week (because she isn't saving any and is spending $7 of what she has weekly)

Your money each additional week vs sister''s:

80/145 (Week 0)

86/138 (Week 1)

92/131 (Week 2)

98/124 (Week 3)

104/117 (Week 4)

110/110 (Week 5) The amounts are the same in 5 weeks.

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HELP ASAP PLZ
marishachu [46]

Answer:

There are 604,800 possible permutations.

Step-by-step explanation:

The order in which the digits are chosen is important, which means that the permutations formula is used to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

P_{(n,x)} = \frac{n!}{(n-x)!}

In this question:

7 digits from a set of 10(10 digits to 0-9). So

P_{(10,7)} = \frac{10!}{(10-7)!} = 604800

There are 604,800 possible permutations.

4 0
3 years ago
Read 2 more answers
Carlos's father bought him a 18-foot board to cut into shelves for his bedroom. Carlos plans to cut the board into 7 equal size
IRINA_888 [86]
If he cuts the board into 7 pieces, that will require 6 cuts with his saw. Therefore, he will lose 6 * .125, or .75 feet for all of the cuts, resulting in 17.25 feet in total after the cuts.
7 0
3 years ago
Can someone help me. Thanks
Alina [70]

Answer:

150ft

Step-by-step explanation:

LxW

you already have the width which is 15

the missing length is 10 which is the same as the bedroom so you mutiply both numbers to get 150ft

8 0
3 years ago
The first 5 terms of a sequence are shown below:
nirvana33 [79]

Step-by-step explanation:

To find the formula for the nth term ,

First , find the common difference or common ratio.

Common difference =

T_2-T_1 \\  - 2 - 3 \\  =  - 5

Common ratio =

T_2/T_1 \\  \frac{ - 2}{3}

The common difference applies to the other given numbers for example :

T_3- T_2  =  - 7 - ( - 2) \\  =  - 7 + 2 =  - 5

this proves that it is an arithmetic sequence and the given formula for the nth term of an arithmetic sequence is

T_n =a(n-1)d

Where n = no of terms

a= first term

d= common difference

6 0
3 years ago
HELP ME PLS!!!!
Marina CMI [18]

Answer:

10°

Step-by-step explanation:

360/36 = 10

3 0
3 years ago
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