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mamaluj [8]
3 years ago
12

A ​used-boat dealership buys a boat for ​$2900 and then sells it for ​$4500. What is the percent​ increase?

Mathematics
1 answer:
Alenkinab [10]3 years ago
3 0

Alright, so we have the difference = 4500-2800=1700. To find the percent increase, we do 1700/2800=around 0.61 = around 61% percent. Hope I helped! ☺☼

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A store is having a sale in which all items are reduced by 20%. Including tax, Jennifer paid $21 for a pair of shorts. If the sa
Tju [1.3M]

Answer: the original price of the shorts was $25

Step-by-step explanation:

Let x represent the original price of the shorts.

The store is having a sale in which all items are reduced by 20%. This means that the amount of discount on the shorts is

20/100 × x = 0.2x

The price of the shorts would be

x - 0.2x = 0.8x

If the sales tax is 5%, then the amount of sales tax charged is

5/100 × 0.8x = 0.04x

The final cost of the shorts would be

0.8x + 0.04x = 0.84x

Including tax, Jennifer paid $21 for a pair of shorts. This means that

0.84x = 21

x = 21/0.84

x = 25

5 0
3 years ago
Here is an equation for a circle: (x-3)^2 + (y+10)^2 = 81.
saw5 [17]

Answer: 2.

Step-by-step explanation: Write the equation of the circle using h = 2, k = –1, and r = ... (x – 1). 2. + y. 2. = 4 is a circle with center (1, 0) and a radius of 2.

7 0
2 years ago
50 POINTS!!!
r-ruslan [8.4K]

housing: 900/4500 = 0.2 = 20%

transportation: 650 / 4500 = 0.14 = 14%

utilities: 120/4500 = 0.026 = 2.6% ( round to 3% maybe)

food: 475/4500 = 0.105 = 10.5% (round to 11% maybe)

savings: 1600 / 4500 = 0.355 = 35.5% (round to 36% maybe)

Student Loan: 270 / 4500 = 0.06 = 6%

Other expenses: 485 / 4500 = 0.107 = 10.7% (round to 11% maybe)



 You didn't say if they needed to be rounded so I gave you the options on the ones that may need it.

8 0
3 years ago
The radius r of a sphere is increasing at a constant rate of 0.04 centimeters per second. (Note: The volume of a sphere with rad
-Dominant- [34]

Answer:

The rate of the volume increase will be \frac{dV}{dt}=50.27 cm^{3}/s

Step-by-step explanation:

Let's take the derivative with respect to time on each side of the volume equation.

\frac{dV}{dt}=4\pi R^{2}\frac{dR}{dt}

Now, we just need to put all the values on the rate equation.

We know that:

dR/dt is 0.04 cm/s  

And we need to know what is dV/dt when R = 10 cm.

Therefore using the equation of the volume rate:

\frac{dV}{dt}=4\pi 10^{2}0.04

\frac{dV}{dt}=50.27 cm^{3}/s

I hope it helps you!

3 0
2 years ago
Maria would like to leave a tip (D) of at least 15% of her total dinner bill (3). Which inequality could Maria use to calculate
jeyben [28]

An

Step-by-step explanation:

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