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3 years ago

This is (compound) probability: Picking two numbers from 1-10 and getting a multiple of 3 both times.

Mathematics

1 answer:

NemiM [27]3 years ago

7 0

Answer:

There are 10 counters in the bag and you want the 4

As their is only one for the probability is

1/10

There are now 9 counters left in the bag.

You only want the even ones , which are 2 6 8 and 10 ( four has been taken out)

There are only four even counters in the bag of nine counters so the probability is

4/9

As you want both of these to occur, you need to multiply them

1/10 x 4/9 = 49/90

Step-by-step explanation:

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wolverine [178]

Step-by-step explanation:

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3 years ago

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Answer:

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2 years ago

Given: ∆ABC –iso. ∆, m∠BAC = 120°

lidiya [134]

Answer: $P\triangle ADH = (a+b+\sqrt{a^2+b^2} )$ unit

Step-by-step explanation:

Since Here Δ ABC is a isosceles triangle.

Also, $AH\perp BC$ and $HD\perp AC$

Thus, ∠ ADH = 90°

That is, Δ ADH is the right angle triangle.

In which, AD = a unit and HD = b unit

And, By the definition of Pythagoras theorem,

$AH^2 = HD^2 + AD^2$

⇒ $AH^2 = a^2 +b^2$

⇒ $AH = \sqrt{a^2+b^2}$

Since, the perimeter of a triangle = sum of the all sides of the triangle.

Therefore, perimeter of ΔADH = AD + DH + AH

= $a + b + \sqrt{a^2+b^2}$ unit

4 0

3 years ago

(Please someone help me!) (No links!)<br> I don't know what to do!!

NeTakaya

Answer:

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Step-by-step explanation:

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2 years ago

Pls help, write an equation then solve for x

tamaranim1 [39]

Answer:

x= $\frac{1}{6}n+\frac{\sqrt{2} }{4}$

Step-by-step explanation:

mutiply both sides of the equation by 6

12x-2n=3 $\sqrt{2$

move the bariable to the right hand side and change its sign

12x=3 $\sqrt{2$ +2n

divide both sides

x= $\frac{\sqrt{2} }{4}$ +1/6n

use commutative propert to reorder the terms

x= 1/6n + $\frac{\sqrt{2} }{4}$

and thats it, i hope this helps ya!

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2 years ago