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3 years ago

Khan Question :) Please do help no links pls

Mathematics

1 answer:

musickatia [10]3 years ago

3 0

Answer:

sqrt(41)

Step-by-step explanation:

Using pythagoras theorem

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You and your friend each collect rocks and fessis your friend collects three times as many roots and half as many fossils as you

n200080 [17]

Answer:

Number of rocks and fossils collected by you is 1 and 24 respectively

Number of rocks and fossils collected by your friend is 3 and 12 respectively

Step-by-step explanation:

Let the number of Rocks you collect be x

Let the number of Fossils you collect be y

Then the total number pf objects you collected will be

x + y = 25

x = 25 - y------------------------------(1)

Your friend collects three times as many rocks and half as many fossils as you.

This can be written as

3x + y (1/2) = 15

3x + (y/2) = 15-------------------(2)

Substituting (1) in (2)

3(25 - y) + (y/2) = 15

75 - 3y + (y/2) = 15

Grouping the like terms we get,

75 - 15 = 3y = (y/2)

60 = ( 6y - y /2)

60 x 2 = 6y -y

120 = 5y

y = 120/5

y = 24

Substituting y value in equation(1) we get

x = 25 - 24

x= 1

y= 24

Friends collects 3 times rock

so collects 3x =3(1) = 3rocks

Also he collects half as many fossils

That is

y/2 = 24/2 = 12 fossils

Hope this help you! :)

5 0

2 years ago

What is 2X^2+9x-1=0 ?

Andreyy89

I have no clue whatsoever sorry

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3 years ago

Which is greater 3% or 0.3

Degger [83]

They are both equal. 3% converted to a fraction is .3

6 0

3 years ago

Read 2 more answers

The least common denominator of three fraction is 100. one of the fractions are 7/10. what are the other fractions.

yaroslaw [1]

The asnwer is play robl0x

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2 years ago

Find a cubic polynomial in standard form with real coefficients, having the zeros 4 and 5i. Let the leading coefficient be 1.

SCORPION-xisa [38]

If one of our zeros is 4, then the factor is x-4. If the second zero is 5i, then the conjugate root theorem says there HAS to be a root that is -5i. So our 3 factors are (x-4)(x+5i)(x-5i). We will FOIL out these factors to get the polynomial. Let's start with the ones that contain the imaginary numbers. Doing that mutliplication we get x^2-25i^2. i^2 is equal to -1, so what that expression simplifies down to is $x^{2} +25$ . Now we will multiply in that last factor of (x-4): $(x^2+25)(x-4)$ . FOILing out we have $x^3-4x^2+25x-100$ . There you go!

3 0

3 years ago