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FromTheMoon [43]
3 years ago
9

You pawn a guitar and receive $880. One month later, you get the guitar back by paying $1250. If this is simple interest, then w

hat annual interest rate did you pay?
Mathematics
1 answer:
Lemur [1.5K]3 years ago
6 0
Interest=1250-880=370
I=PRT
P=principal
r=rate in deicmal
t=time in years

1 month so t=1/12
P=880
I=370

370=880*r*1/12
370=220/3r
times both sides by 3
1110=220r
divdie both sides by 220
5.04545=r
505% interest
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What is -1/3+w=5 3/8 express in simplest form
Elodia [21]
Let's solve your equation step-by-step.<span><span><span><span>
</span></span></span></span>\frac{-1}{3}<span><span>+w</span>=<span>5</span></span><span>\frac{3}{8}</span>
Step 1: Simplify both sides of the equation.<span><span>
w+</span></span>\frac{-1}{3}<span>=</span><span>\frac{43}{8}</span>
Step 2: Add \frac{1}{3} to both sides.<span><span><span>
w+</span></span></span>\frac{-1}{3}<span><span>+</span></span><span>\frac{1}{3}</span><span>=</span>\frac{43}{8}<span>+</span><span>\frac{1}{3}</span><span>
w=</span><span>\frac{137}{24}</span>


Answer:<span>w=5</span><span>\frac{17}{24}</span>
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3 years ago
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Semenov [28]
That is dependent because it is changing.independent stays the same
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At the moment a hot cake is put in a cooler, the difference between the cake's and the cooler's temperature is 50° Celsius. This
dybincka [34]

Answer:

D(t)=50(0.8)^t

Step-by-step explanation:

We are given that

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r=\frac{1}{5}/min

We have to find the function that gives the temperature difference in degrees Celsius D(t).

We know that

D(t)=a(1-r)^t

Substitute the values

D(t)=50(1-\frac{1}{5})^t=50(1-0.2)^t

D(t)=50(0.8)^t

This is required function that gives the temperature difference in degrees Celsius.

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Allie deposited $80 in a savings account earning 10% interest, compounded annually. To the nearest cent, how much will she have
77julia77 [94]

Answer: $96.8

Step-by-step explanation:

Formular for Compounding annually :

A =P ( 1 + r/n) ^nt

Where p is the Principal given as $80

r is the rate given as 10% = 10/100 = 0.1

n is the number of times the principal was compounded, given as 1

t is the time, given as 2 years:

Slot the values into the formula:

A= $80 ( 1 + 0.1/1) ^ (1 × 2)

A= $80 ( 1 + 0.1) ^2

A= $80 ( 1.1) ^2

A= $80 (1.21)

A= $80 x 1.21

A= $96.8

96.8 is already rounded to the nearest cent.

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Step-by-step explanation:

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