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GREYUIT [131]
2 years ago
7

Interest after 1 year:

Mathematics
2 answers:
jasenka [17]2 years ago
5 0

which class is this because I am in 7th class so that's why I can't give

alexira [117]2 years ago
5 0
For simple interest, the equation is
i = prt
interest = (principal/amount deposited) • (rate in decimal form) • (time in years)

To change the 2 1/2% interest to decimal form, first it becomes 2.5% interest, then divide by 100 (moving the decimal place 2 to the left), = 0.025

To calculate interest after 1 year, the equation blanks they gave you left off the time, which is 1, because it won’t change the equation.

0.025 • 250 = $6.25

Interest after 8 years:

i = (250)(0.025)(8)
i = $50

Hope this helps. Let me know in the comments if you have questions, or want to include the rest of the “convince me” section.
You might be interested in
​One-third of a number is 1 more than ​one-fourth of the same number.<br> What is the number?
konstantin123 [22]

Answer:

  12

Step-by-step explanation:

1/3 of 12 = 4

1/4 of 12 = 3

4 is 1 more than 3.

The number is 12.

_____

If this does not immediately come to mind, you can solve for the number, x:

  x/3 -x/4 = 1 . . . . the difference between 1/3 of x and 1/4 of x is 1

  x/12 = 1 . . . . . . . collect terms: (1/3 -1/4 = 4/12 -3/12 = 1/12)

  x = 12 . . . . . . . . multiply by 12

7 0
3 years ago
5#The distribution of scores on a standardized aptitude test is approximately normal with a mean of 480 and a standard deviation
kirza4 [7]

We want to find the value that makes

P(X\ge x)=0.2

To find it we must look at the standard normal table, using the complementary cumulative table we find that

P(Z\ge z)=0.20045\Leftrightarrow z=0.84

Then, using the z-score we can find the minimum score needed, remember that

z=\frac{x-\mu}{\sigma}

Where

σ = standard deviation

μ = mean

And in our example, x = minimum score needed, therefore

\begin{gathered} 0.84=\frac{x-480}{105} \\  \\ x=0.84\cdot105+480 \\  \\ x=568.2 \end{gathered}

Rounding to the nearest integer the minimum score needed is 568, if you get 568 you are at the top 20.1%.

7 0
1 year ago
The image point of A after a translation right 4 units and up 3 units is the point
e-lub [12.9K]

Answer:

(--6,-1)

Step-by-step explanation:

Right 4 units, to go back, left 4 units

Up 3 units, to go back, down 3 unites

Left : -2 - 4  = -6

Down : 2 - 3 = -1

4 0
3 years ago
Help me with this text please
saw5 [17]
I think the boxes must be filled with
1/3 and -1/5.
3 0
3 years ago
Read 2 more answers
Liz flips a coin 80 times. The coin lands heads up 32 times and tails up 48 times. Complete each statement. The theoretical prob
schepotkina [342]

Answer:

40%

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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