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harina [27]
3 years ago
11

Jonathon has $2.50. He has 7 more dimes than nickels. How many of each does he have? Only an alegebraic solution will be accepte

d
Can you show the steps for the problem thanks :)
Mathematics
1 answer:
Zina [86]3 years ago
4 0
2.50 = .15x + .7
-.7               -  .7
1.8 = .15x
12 = x
7 more dimes so 12 nickels and 19 dimes


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ANSWER

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EXPLANATION

From the Pascal's triangle,

The coefficients are :

1, 5, 10,10, 5,1

Because of the negative sign, the expansion will alternate sign.

(x - y) ^{5}  =  {x}^{5}  - 5 {x}^{4} y + 10 {x}^{3}  {y}^{2}  - 10 {x}^{2}  {y}^{3}  + 5x {y}^{4}  -  {y}^{5}

We now put y=5 into the expansion to get,

(x - 5) ^{5}  =  {x}^{5}  - 5 {x}^{4} (5) + 10 {x}^{3} ( {5}^{2})  - 10 {x}^{2}  ({5})^{3}  + 5x( {5})^{4}  - {5}^{5}

(x - 5) ^{5}  =  {x}^{5}  - 25 {x}^{4} + 250 {x}^{3}   - 1250 {x}^{2} + 3125x- 3125

3 0
3 years ago
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M is proportional to the cube of r. when r=3m,m=216.when r=5 find the value of m
klio [65]

Answer:

The value of m is 1000 for r=5

Step-by-step explanation:

Given that m is proportional to the cube of r

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When the proportionality symbol is removed a proportionality constant is introduced in the equation.

Let k be the proportionality constant

m = kr^3

Given

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The equation will now become

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borishaifa [10]

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A histogram is a visual representation of data.

In the given histogram we can see that

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In order to find the number of movies which are 120 minutes long or less than 120 minutes we will add up all the number of movies with 120 length and less than that

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Learn more about histograms at:

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sineoko [7]
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