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svlad2 [7]
4 years ago
9

Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest

Mathematics
2 answers:
mafiozo [28]4 years ago
3 0

Answer:

3.  83%, or A

Step-by-step explanation:

First you have to create the variables.

If you need to find the probablility of two items, then you first add them.

11+14 = 25.

Now, you add all the numbers.

22+14+5 = 30.

Using that, make a fraction then simplify.

25/30 = 5/6

4: D

Using the same process, add everything but the green balls.

11+5 = 17.

Now add them all up.

11+14+5 = 30

Form a fraction, then simplify.

17/30 = approximately 8/15

sergij07 [2.7K]4 years ago
3 0

Answer:

Question 3: 5/6

Question 4: 8/15

Step-by-step explanation:

Yellow = y

Green = g

Red = r

Question 3) Hat:

5 red balls, 14 green balls, and 11 yellow balls

What is the probability that a yellow or green ball is chosen?

Write an equation:

y + g / y + g + r

Substitute

11 + 14 / 11 + 14 + 5

Add/Simplify

25/30

Divide both the numerator and denominator by 5 to simplify

25 ÷ 5 / 30 ÷ 5

5/6

Question 4) Bag:

5 red balls, 14 green balls, and 11 yellow balls

What is the probability that John does not choose a green ball?

Write an equation

y + r / y + r + g

Substitute

11 + 5 / 11 + 5 + 14

16/30

Divide both the numerator and denominator by 2

16 ÷ 2 / 30 ÷ 2

8/15

Hope this helps :)

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If f(x) = -7x + 5x2 + 10, what does f(-2) equal?
Iteru [2.4K]

Answer:

44

Step-by-step explanation:

f(x) = -7x + 5x^2 + 10

f(-2) = -7(-2) + 5(-2)^2 + 10

= 14 + 20 + 10

= 44

6 0
3 years ago
The circumference of a circle is 65n. In terms of pi, what is the area of the circle
vagabundo [1.1K]

Answer:

In order to answer this you would need to use this equation: <em>A = πr² </em> (See explanation)

Step-by-step explanation:

So, The circumference of the circle is 65n?

What you need to do is <em>A = πr² </em>

Let's divide 65n by Pi (65/3.14)

That equals 20.70n

Now we have the diameter of the circle. We need the radius for <em>A = πr² .</em>

We need to divide the diameter by two (20.70/2)

We now have the radius of the circle: 10.35n

Now we need to plug 10.35n in our Area equation :<em>A = π10.35² </em>

So now we multiply the Radius by Pi (π * 10.35)

This means that the area of our circle is: A = 32.49

Your answer Is 32.49n

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E%7B2%7D%20%2B4x%2B4" id="TexFormula1" title="\sqrt{x^{2} +4x+4" alt="\sqrt{x^{2}
Anna35 [415]

Answer:

Given,

\sqrt{ {x}^{2}  + 4x + 4}  - 3 = 0 \\  =  >  \sqrt{ {x}^{2}  + 4x + 4}  = 3 \\  =  >  {( \sqrt{ {x}^{2}  + 4x + 4} })^{2}  =  {3}^{2}  \\  =  >  {x}^{2}  + 4x + 4 = 9 \\  =  >  {x}^{2}  + 4x + 4 - 9 = 0 \\  =  >  {x}^{2}  + 4x - 5 = 0 \\  =  >  {x}^{2}  + 5x - x  - 5 = 0 \\  =  >  x(x + 5) - 1(x  + 5) = 0 \\  =  > (x - 1)(x  + 5) = 0 \\  \\  \sf \: either \: x - 1 = 0 \:  \:  \:  \:  \\  =  > x = 1 \:  \:  \\  \\  \sf \: or \\ x + 5 = 0 \\  =  > x =  - 5 \\  \\ \green{ \boxed{  \bf \:  \:  \:  \: \: x = 1 \:  \: or \:  - 5}}

But if we put the value of x = 5 then it doesn’t satisfy the equation.

So,

X = 1

5 0
3 years ago
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This question is out of context
7 0
2 years ago
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What is the value of x in the solution to the system<br> x+y=10<br> x-y=4
ANEK [815]

Answer:

x = 7; y = 3

Step-by-step explanation:

I used the Trial and Error Method and found that x = 7 and y = 3

=> 7 + 3 = 10

=> 10 = 10. ✔

=> 7 - 3 = 4

=> 4 = 4. ✔

Therefore, x = 7 and y = 3

Hoped this helped.

6 0
2 years ago
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