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xz_007 [3.2K]
3 years ago
12

Write an expression for "n decreased by 3"

Mathematics
1 answer:
hichkok12 [17]3 years ago
5 0
N decreased by 3 is n-3
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Julie invested 3000 in a simple interest account for 2 years. At the end of the 2 years, she had earned $75 in interest. What wa
Dahasolnce [82]

The simple interest rate was: 1.25%

Step-by-step explanation:

Simple interest is given by:

A = Prt\\Here\\A  => Interest\\P=>Principal\ Amount\\r => Rate\\t => Time\ in\ years

Given

Principal amount =$3000

Time = t = 2 years

Interest amount = A = $75

putting the values in the formula

75 = 3000 * r * 2\\75 = 6000r

Dividing both sides by 6000

\frac{6000r}{6000} = \frac{75}{6000}\\r = 0.0125\\

So,

The rate is:

0.0125 * 100 = 1.25%

Hence,

the simple interest rate was: 1.25%

Keywords: Simple interest, percentage

Learn more about interest at:

  • brainly.com/question/5720422
  • brainly.com/question/5565320

#LearnwithBrainly

5 0
3 years ago
You score 84 points in six games.Find the unit rate
Nitella [24]
14 points per game is the unit rate

4 0
3 years ago
A car traveling at 32 m/s starts to decelerate steadily. It comes to a complete stop in 14 seconds. What is its acceleration?
valentina_108 [34]
We have:

Initial velocity (u) = 32 m/s
Final velocity (v) = 0 m/s ⇒ The value is zero because the car comes to stationary position when it stops
Time = 14 seconds

We can use one of the constant acceleration equation:
v=u+at where a is the acceleration

0=32+14a
32=-14a
a=- \frac{32}{14}=-2.3m/s^{-2}

The acceleration is 2.3 m/s⁻² and the negative sign shows deceleration
3 0
3 years ago
Read 2 more answers
Plums are $3.25 for 2 pounds, i need 4 pounds. how much will it cost
olasank [31]
<u />\frac{3.25}{2lbs} = \frac{x}{4lbs}  \\  \frac{3.25}{2} *  \frac{2}{2} = \frac{x}{4}  \\  \frac{3.25 * 2}{2*2} = \frac{x}{4}  \\ 3.25*2 = x \\ x = 6.50
It will cost $6.50 for four pounds of plums.

Hope this helps!
4 0
3 years ago
In which step did Melanie make the first error, and which expression should she have written in that step?
Debora [2.8K]

Melanie made the first error in step 4; csc(x) .

5 0
3 years ago
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