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2 years ago

8

8 black balls and 7 red balls in an urn. 5 are withdrawn without replacement. What is probability exactly 2 black balls will be

drawn?

1 answer:

densk [106]2 years ago

6 0

6 black balls to 4 red balls

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f the points (-4, 1) and (2, 1) are the endpoints of a diameter of a circle, where is the center? A) (-7, 1) B) (-1, 1) C) (1, -

Ulleksa [173]

Answer:

B

Step-by-step explanation:

The centre is at the midpoint of the endpoints of the diameter.

Using the midpoint formula, then

centre = ( $\frac{-4+2}{2}$ , $\frac{1+1}{2}$ ) = (- 1, 1 ) → B

4 0

2 years ago

Emily is 2 years older than Alysson. The product of their age is 440. How old are they?

Nuetrik [128]

Call Emily's age is x, we have:
x * (x - 2) = 440
So x = 22
So Emily's 22 years old, Alysson's 20 years old.\\
Brainliest?

5 0

2 years ago

Is 5 + 3x1 - x) equivalent to 8 – 8x?

nalin [4]

Answer:

no

Step-by-step explanation:

5+3x is equal to 8x.

if there is no number in front of a variable, it is understood to be a one. so 1-x would basically be 1-1. this cancels out the x, making it impossible for the equivalent equation to be 8 - 8x

3 0

2 years ago

Calculate the area of triangle ABC with altitude BD, given A (−6, 0), B (0, 0), C (0, 6), and D (−3, 3).

nata0808 [166]

Answer:

18 unit²

Step-by-step explanation:

If BD is altitude then AC is the base.

<u>The length of AC is:</u>

AC = $\sqrt{6^2+6^2} = 6\sqrt{2}$

<u>The length of BD is:</u>

BD = $\sqrt{3^2 + 3^2} = 3\sqrt{2}$

<u>The area is:</u>

A = 1/2bh
A = 1/2 * $6\sqrt{2} *3\sqrt{2}$ = 18 unit²

4 0

2 years ago

Read 2 more answers

True or false domain,first element and y-value all have the same meaning

Delvig [45]

The answer is false. :) and do u need points to ask questions?

6 0

3 years ago

Read 2 more answers