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Mamont248 [21]
3 years ago
9

Simple interest = P × r × t

Mathematics
1 answer:
kaheart [24]3 years ago
5 0

<em>HOPE</em><em> </em><em>THIS</em><em> </em><em>WILL</em><em> </em><em>HELP</em><em> </em><em>U</em><em>.</em><em>.</em><em>.</em><em>.</em>

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karen received some gift cards for music and movie downloads for her birthday. Using one of them, she downloaded eight songs and
finlep [7]

One song download costs $2 and one movie download costs $11.

Step-by-step explanation:

Let,

Price of one song download = x

Price of one movie download = y

According to given statement;

8x+9y=115     Eqn 1

15x+9y=129   Eqn 2

Subtracting Eqn 1 from Eqn 2

(15x+9y)-(8x+9y)=129-115\\15x+9y-8x-9y=14\\7x=14

Dividing both sides by 7

\frac{7x}{7}=\frac{14}{7}\\x=2

Putting x=2 in Eqn 1

8(2)+9y=115\\16+9y=115\\9y=115-16\\9y=99

Dividing both sides by 9

\frac{9y}{9}=\frac{99}{9}\\y=11

One song download costs $2 and one movie download costs $11.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/1289682
  • brainly.com/question/12932203

#LearnwithBrainly

3 0
3 years ago
Each base of a triangular prism is a right triangle with side lengths 3 inches, 4 inches, and 5 inches. The height of the prism
Gnom [1K]
<span>Area of the base = 3*4 / 2 = 6
</span><span>Area of BOTH bases = 12 sq inches
Area of one face = 3 * 7 = 21 sq inches
</span>Area of 2nd face = 4 * 7 = 28 <span>sq inches
</span>Area of 3rd face =  5 * 7 = 35 <span>sq inches

TOTAL Area = 96 </span><span>sq inches</span>

6 0
3 years ago
A fisherman yanks a fish vertically out of the water with an acceleration of 2.5! !! using very light fishing line that has a br
Artyom0805 [142]

Two forces act on the fish, and these are:


1) Its weight mg, downwards and 


2) pressure in the string, T, upwards which is 22 N when the string breaks. 
In the result of these two forces, the fish had an acceleration of 2.5 m/s^2 in the upward way. 


So, T - mg = m*2.5


=> m = T / (2.5 + g)


=> m > 22 / (2.5 + 9.8) ( when the string snaps ) 


=> m > 1.79 kg. 


As a result, the mass of the fish is more than 1.79 kg as the line has been broken.

6 0
3 years ago
The graph shows the temperature of ice cream in an ice chest during an overnight trip. What is the domain of this function?
mariarad [96]

Let

x-------> the number of hours

y------> the temperature in degrees Fahrenheit

we know that

For x=0\ hours

y=-10\°\ F

For x=30\ hours

y=30\°\ F

The domain of the function is the interval----------> [0,30]

0\ hours \leq x\leq 30\ hours

The range of the function is the interval----------> [-10,30]

-10\°\ F \leq y\leq 30\°\ F

therefore

<u>the answer is</u>

The domain is all real numbers 0 through 30

4 0
3 years ago
Read 2 more answers
David writes down the sequence 2, 6, 10, 14<br><br>he says the sequence is n+4 <br><br>is he correct
Sonja [21]
He is, since each number is 4 more in value than the previous number
7 0
3 years ago
Read 2 more answers
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