3 years ago

Petra invests $10,800. After 4 years she has earned $3240 in interest.

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

6 0

Answer:

Rate =interest*100/principal*time

Rate = 7.5%

Step-by-step explanation:

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The cashier has been directed to sell an item for half off its regular price of$1.98.what is the sale price

galben [10]

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3 years ago

1.)12.5+(-31.5)=<br>2.)-31.91+(-16.7)=<br>3.)1/6+(-11/12)+2/3=<br>4.)29+(-15.7)+(-31.05)=

Xelga [282]

1. = Step 1. Simplify Brackets and you get $12.5 - 31.5$ Step 2. Simplify and you get $-19
$ which is your answer.

2. = Step 1. Simplify Brackets and you get $-31.91-16.7$ Step 2. Simplify and you get $-48.61$

3. = Step 1. Simplify Brackets and you get $\frac{1}{6} - \frac{11}{12} + \frac{2}{3}$ Step 2. Simplify and you get $- \frac{1}{12}$

4. Step 1. = Simplify Brackets and you get $29-15.7-31.05$ Step 2. Simplify and you get $-17.75$