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dybincka [34]
3 years ago
13

Compare the average score of a student at the beginning of a month and at the end of that month, if at first, it increased by 40

%, then decreased by 25%
Mathematics
2 answers:
-BARSIC- [3]3 years ago
6 0

Answer: 5%

Step-by-step explanation:

Leno4ka [110]3 years ago
4 0

Answer:

122.5

Step-by-step explanation:

Let the student normal score be 100

In the beginning score increased by 40%

Hence score at the beginning =100+40 = 140%

Now before end score decreased by 25%

Decrease = 25% of 140 = 35

Hence score at the end of month = 140-35 = 105

Average score for the month

= Total of scores of end and beginning month /2

= \frac{140+105}{2} \\=122.5

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gizmo_the_mogwai [7]

Answer:

Annually: Total Amount = 1611.76, Interest Amount = 711.76

Semiannually: Total Amount = 1625.50 , Interest Amount = 725.50

Quarterly: Total Amount = 1632.62 , Interest Amount = 732.62

Step by Step Explanation:

We can see from the table that the factor that we need to multiply with 900 in order to get amount for compounded annually is 1.7908477. Therefore, our total amount is 1.7908477*900 = 1611.76 and interest earned is 1611.76-900 = 711.76.

The factor that we need to multiply with 900 in order to get amount for compounded semiannually is 1.8061112. Therefore, our total amount is 1.8061112*900 = 1625.50 and interest earned is 1625.50-900 = 725.50.

The factor that we need to multiply with 900 in order to get amount for compounded semiannually is 1.8140184. Therefore, our total amount is 1.8140184*900 = 1632.62 and interest earned is 1632.62-900 = 732.62.

6 0
3 years ago
Evaluate the related series described 4 - 12 + 36 - 108 n=6
Arada [10]

Answer:

11/54 is n did you want it in decimal form 0.2037 bar on top of 03

6 0
2 years ago
Two numbers rolled can be added to get a sum. Find P(sum is even.)
azamat
When you roll two numbers you have four kinds of outcomes: EE, EO, OE, OO (where E = even, O = odd).

You get an even sum only if you sum two numbers that are both even or both odd, therefore the outcomes wanted are two: EE and OO.

Therefore:
P(sum is even) = 2 / 4 = 0.5

Hence, there is a 50% probability that, when you roll two numbers, their sum will be even.
6 0
2 years ago
Use substitution to solve the system of equations.<br> -1=2x-y<br> 8x-4y=-4
sineoko [7]

Answer:

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Step-by-step explanation:

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2 years ago
Can someone help me plz
WINSTONCH [101]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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