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Katyanochek1 [597]
2 years ago
11

A class was conducting a series of probability experiments.

Mathematics
1 answer:
leva [86]2 years ago
6 0
I believe the answer would be B, since both situations give you 6 chances at drawing/rolling the right number/marble.
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In △XYZ , XZ=9 , YZ=4 , and XY=7 .
Mamont248 [21]

Answer:

A=6\sqrt{5}\ units^2

Step-by-step explanation:

we know that

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.  

so

A=\sqrt{s(s-a)(s-b)(s-c)}

where

a, b and c are the length sides of triangle

s is the semi-perimeter of triangle

we have

a=9\ units,b=4\ units,c=7\ units

Find the semi-perimeter s  

s=\frac{9+4+7}{2}=10\ units

Find the area of triangle

A=\sqrt{10(10-9)(10-4)(10-7)}

A=\sqrt{10(1)(6)(3)}

A=\sqrt{180}\ units^2

Simplify

A=6\sqrt{5}\ units^2

8 0
3 years ago
Can anyone please help me with these
DochEvi [55]

Answer: Natural/Counting = 1, 0, 6, 3,

Whole = 1234, 135

Integers = -42,260, -97

Rational = 0.5432, 14.4, 6.2, 6.5892,

-14.4, 7.7777777, -13.574,

3.14, 0.4, 6.2, 0.4, 0.34,

12/6, -8/4, -10/5, -3/4, -3/8,

3/7, -4/8, 6/2, -8/4

Irrational = √34, -√34, -√ 36, 2π, √81,

√300, √1, π.

;Hope this Helped with both Pages:)

4 0
3 years ago
A can of pineapple juice is a cylinder with a radius of 2.4in.and a height of 11 in. what is the area of the label around the ca
chubhunter [2.5K]
\bf \textit{lateral surface area of a cylinder}\\\\
A=2\pi r h\qquad \begin{cases}
r=radius\\
h=height\\
-----\\
r=2.4\\
h=11
\end{cases}\implies A=2\pi (2.4)(11)\implies A=52.8\pi
4 0
3 years ago
Write a fraction that is less than 5/6 and has a denominator of 8
grandymaker [24]

Answer:

1/8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The population of a town is 13,000. It decreases at a rate of 5% per year. In about how many years will the population be less t
just olya [345]

This is an exponential decay problem.

Using the equation Y = a *(1-rate)^time

where Y is the future value given as 12,000 and a is the starting value given as 13,000.

The rate is also given as 5%.

The equation becomes:

12,000 = 13,000(1-0.05)^x

12,000 = 13,000(0.95)^x

Divide each side by 13000:

12000/13000 = 0.95^x/13000

12/13 = 0.95^x

Use the natural log function:

x = ln(12/13) / ln(0.95)

x = 1.56 years. ( this will equal 12,000

Round to 2 years it will be less than 12000.

3 0
3 years ago
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