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3 years ago

First five multiples of 15

Mathematics

2 answers:

BARSIC [14]3 years ago

6 0

The first 5 multiples of 15 are: 0, 15, 30, 45, 60

skad [1K]3 years ago

3 0

Answer:

To get the first five multiple of 15, you add 15 to 15 five times as shown below. I hope this answers your question! :)

Step-by-step explanation

15+15+30

30+15=45

45+15=60

60+15=75

75+15=100

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A rectangular parcel of land has an area of 3,000 ft2. A diagonal between opposite corners is measured to be 10 ft longer than o

Kazeer [188]

Answer:

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Step-by-step explanation:

Let x be the one side ( in feet ) of the rectangular parcel,

So, the diagonal between opposite corners = ( x + 10 ) feet,

Let y be the other side of the rectangle ( adjacent to side x ),

The area of the rectangle,

A = x × y,

According to the question,

A = 3000 square ft,

$\implies xy = 3000\implies y=\frac{3000}{x}$

∵ In a rectangle,

$D^2=a^2+b^2$

Where, a and b are the adjacent side of the rectangle and D is the diagonal,

$(x+10)^2 = x^2 + y^2$

$(x+10)^2 = x^2 + \frac{9000000}{x^2}$

$x^2(x+10)^2 = x^4 + 9000000$

$x^2(x^2+100+20x) = x^4 + 9000000$

$x^4+100x^2 + 20x^3 = x^4 + 9000000$

$20x^3 + 100x^2 - 9000000=0$

$x^3 + 5x^2 - 450000 = 0$

By graphing the equation,

We found that,

The only real zeros of the equation is at x = 75,

Hence, the one side of the rectangle = 75 ft,

And, second side = $\frac{3000}{75}$ = 40 ft

Hence, the dimension of the land is 40 ft × 75 ft

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koban [17]

Answer:

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Step-by-step explanation:

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According to one of the law of indices,

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sleet_krkn [62]

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Likurg_2 [28]

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Step-by-step explanation:

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