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Snowcat [4.5K]
3 years ago
5

iris has 120 songs on her playlist each week she downloads 4 new songs. write an expression to show the total number of songs on

iris's playlist after W weeks.
Mathematics
1 answer:
Leni [432]3 years ago
6 0

Answer:

4 W = n of songs on her playlist

n \leqslant 120

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The incline of a roller coaster is 2 times as long as its elevation, and the horizontal length of the roller coaster is 11 m mor
Gelneren [198K]
Let 
x-------> t<span>he horizontal length of the roller coaster
y------> </span>the elevation of the roller coaster
c------> t<span>he incline of a roller coaster
</span>
we know that
applying the Pythagoras theorem
c²=x²+y²-----> equation 1
c=2y-----> equation 2
x=11+y----> equation 3

substitute equation 2 and equation 3 in equation 1
[2y]²=(11+y)²+y²
4y²=11²+22y+y²+y²
2y²-22y-121=0

using a graph tool-----> to resolve the second order equation
see the attached figure

the solution is 
y=15.026 m

c=2*y-----> c=2*15.026----> c=30.052 m

the answer is
30.05 m


7 0
3 years ago
$10 000 is borrowed at 10.5% per annum interest. How much interest is owed at the end of the first 10 months?
Leviafan [203]

Answer:

$875 is the interest owed at the end of the first 10 months

Step-by-step explanation:

In this question, we are to calculate how much interest is owed in the first ten months.

There are several routes to this but the one i will like to use is as follows.

we shall calculate the amount owed for a year, afterwards we did use this amount by 12 since there are 12 months in a year. Now we multiply whatever answer we have by 10 to get the amount owed in 10 months.

To calculate the interest, we use the simple interest formula.

Mathematically;

I = PRT/100

where P is the amount borrowed which is $10,000

R is the interest rate which is 10.5% per annum

T is the time which we agreed we would be using 1 year first.

I = (10,000 * 10.5 * 1)/100 = $1050

This is the amount in 12 months. In a single month, this will be 1050/12 = $87.5

This amount in 10 months will be 87.5 * 10 = $875

8 0
3 years ago
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Deffense [45]
16 only goes into 20 once
3 0
3 years ago
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2 + 2 = ______________________________________________
kumpel [21]

Answer:4

Step-by-step

3 0
3 years ago
Plot two points that are 3 units from Point A and also share the same x-coordinate as Point A.
Karolina [17]

Answer:

5,3 and 5,9

Step-by-step explanation:

and it is right trust me if its not blame me all you want

6 0
3 years ago
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