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3 years ago

20 question ach containing three answers quiz probability of getting no points? worksheet

1 answer:

5 0

The probability of getting no points on any given question is 2/3, so for 20 independent questions, it is (2/3)^20 ≈ 3.007*10^-4.

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The square pyramid has a volume of 27 cubic inches. What is the value of X?

wolverine [178]

Answer:

9 inches

Step-by-step explanation:

base is rectangular in shape

Side of base of square pyramid is X inches

height of square pyramid is 1/9 X

Volume of any pyramid is 1/3 *(area of base* height of pyramid)

area of base of square pyramid = Side of base * Side of base

as area of square is equal to side * side

area of base of square pyramid = x* x square inches = $x^2 sq.\ inches$

Volume of pyramid = 1/3 *(area of base* height of pyramid)

substituting given value of of volume of pyramid , height of pyramid and area of base calculated above we have

$27 = 1/3(x^2)*(1/9 x)\\\\27*3*9 = x^3\\729 = x^3\\x = \sqrt[3]{729} \\x = 9$

Therefor value of x is 9 inches.

5 0

3 years ago

Help a girl out!! Can you explain how you got the answers as well?

balandron [24]

Answer:

I think its H, 2.5%

Step-by-step explanation:

5 0

2 years ago

2/3 times what equals 10?

Aleks [24]

You have to divide 10 by $\frac{2}{3}$

$\frac{10}{1}$ ÷ $\frac{2}{3}$ ⇒ $\frac{10}{1}$ x $\frac{3}{2}$

You use a method called "flip-flop and multiply" where you flip the second fraction to multiply
$\frac{10}{1}$ × $\frac{3}{2}$ ⇒ $\frac{30}{2}$

Now divide the numerator (top) by the denominator (bottom)

$30
$ ÷ $3=15$

Now lets check:

$\frac{2}{3} * \frac{15}{1} = \frac{30}{3}$

$30$ ÷ $3=10

$

Answer: $\frac{2}{3}$ × $15=10$

8 0

3 years ago

Read 2 more answers

Mrs. Thornton is teaching a 5th grade class. She is standing 15 meters in front of Hillary. Avisha is sitting 8 meters to Hillar

kykrilka [37]

15+8=23, i think is the answer

5 0

3 years ago

2x +3y = 12<br><br>Complete the missing value in the solution to the equation<br><br>(__, 8)

Alex

Answer:

The two solutions of the equation is (0,-4)(6,0).

4 0

2 years ago