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hodyreva [135]
2 years ago
14

What is the rate of change?

Mathematics
1 answer:
eduard2 years ago
4 0

Answer:

12

Step-by-step explanation:

12 +30= 42

42+12=54

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Sydney borrowed $5500 from the bank to pay for her first semester of college. The loan has a simple interest rate of 6% for the
sergij07 [2.7K]

Answer:

$330

Step-by-step explanation:

7 0
3 years ago
Question 1 of 10 Diana invested $3000 in a savings account for 3 years. She earned $450 in interest over that time period. What
dangina [55]

Hey there!!

The question states that a sum is invested which is $3000 and hence, this would be counted as the principle amount or the principle sum.

The term given is 3 years, which gives us the idea that this interest is being counted or being active for 3 years.

She ( Diana ) earned the sum $450 at the end of three years. This means, the simple interest is $450.

Never get confused with the principle amount, principle sum and interest.

<u><em>Principle amount = Principle sum + The interest. </em></u>

Formula given :

I = prt

'p' is denoted as the principle sum, r is the rate and the t is the term or the number of years.

Now, plugging in all the values :

... <em>450 = 3000×r×3 </em>

... <em>450 = 9000×r </em>

... <em>r = 450 / 9000</em>

... <em>r = 0.05 </em>

... <em>r = 5% </em>

As we need the answer in the decimal form, the answer would be <em><u>0.05</u></em>

Hope my answer helps!!<em> </em>

4 0
2 years ago
What percent of 12.4 is 12.4
NARA [144]
To find a percentage divide the first number by the second.

\frac{12.4}{12.4}=\frac{1}{1}=1.00

Now that you have your number, move the decimal point over 2 to the right and add your percentage sign.

100.00%

Your answer is 100%
3 0
3 years ago
Read 2 more answers
Four more than six times a number is at least 40. Find the possible range of values.
Setler [38]
1. Let x = #
2. "Five less than six times a number" can be written as: 6x - 5
3. "is at least" is the same as "greater than or equal to" and can be written as: >=
4. "nine subtracted from two times that number" can be written as: 2x - 9
5. the equation is: 6x - 5 >= 2x - 9
6. solve for x by grouping the x variable terms on one side and the constants on the other side:
6x - 5 >= 2x - 9
-2x +5 -2X +5
4x >= -4
7. divide each side by 4, and you get: x = -1
5 0
3 years ago
A car travels at an average speed of 52 miles per hour. How long does it take to travel 234 miles
mars1129 [50]
Speed = distance/time

so to work out time you do distance/ speed

234/52= 4.5hours
7 0
2 years ago
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