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eimsori [14]
3 years ago
8

You're a 7th grade math teacher and you want to create an experiment for your class with red, yellow and purple marbles in the b

ag. You want the theoretical probability of getting red to be 1/2. The theoretical probability of drawing yellow be 1/3 and the theoretical probability of drawing purple being 1/6. If you want a total of 1260 marbles in the bag.
1. How many red marbles are you going to put in to the bag and why?
2.How many marblesare yout going to put into the bag and why?
3. How many purple marbles are you going to put into the bag and why?
Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
8 0

630 red marbles

420 yellow marbles

210 purple marbles

because 1260 x 1/2 = 630, 1260 x 1/3 = 420, 1260 x 1/6 = 210

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What is the solution to the equation below?
lara31 [8.8K]

Answer:

x=4096, Option B

Step-by-step explanation:

Given, \log_{8}x=4

Formula needed,

\log_{a}b=\frac{\log b}{\log a}

Therefore,

\log_{8}x=\frac{\log x}{\log 8}

\frac{\log x}{\log 8}=4

{\log x}=4{\log 8}

\log x={\log 8^4}

x=8^4

x=4096

Option B is correct.

8 0
4 years ago
Find the area of the polygon​
Evgesh-ka [11]

Answer:

784m^2

Step-by-step explanation:

is a rectangle with sides of 40m and 20m, in the upper right corner a right triangle has been removed with the legs of: 40 - 32 = 8m and 20 - 16 = 4m, we find the area of ​​the rectangle (b * h).

40 * 20 = 800m ^ 2, then we find the area of ​​the right triangle

1/2 b * h: 1/2 8 * 4 = 16 m ^ 2.

we remove the area of ​​the triangle from the rectangle and we have the area of ​​the figure: 800 - 16 = 784m^2

3 0
2 years ago
Find the nth term of this quadratic sequence<br> 3, 11, 25, 45, .
Hoochie [10]

The term of the given quadratic sequence is found to be 3n² - n + 1 using the principle of mathematical induction.

Given,

In the question:

The quadratic sequence is :

3, 11, 25, 45, ...

To find the nth term of the quadratic sequence.

Now, According to the question;

The first term of the sequence is 3, the second term is 11, the third term is 25, and the fourth term is 45.

The difference between the first and second terms can be calculated as follows:

11-3 = 8

The difference between the second and third terms can be calculated as follows:

25-11 = 14

The difference between the third and fourth terms can be calculated as follows:

45-25 = 20

The sequence is expressed as follows:

3,3+8,11+11,25+20,...

The difference between consecutive terms expands by 6.

Use the principle of mathematical induction.

6(\frac{n(n+1)}{2} )

= 3n(n+1)

The sequence's nth term can be calculated as follows:

term = 3n(n+1) - 4n + 1

             = 3n² - n + 1

Hence, the term of the given quadratic sequence is found to be 3n² - n + 1 using the principle of mathematical induction.

Learn more about Principle of mathematical induction at:

brainly.com/question/29222282

#SPJ1

6 0
1 year ago
Steve works as a football referee for 10 hours a week, and as a bus driver for 30 hours per week.if both jobs pay $21 per hour,h
arsen [322]

Answer:

$840

Step-by-step explanation:

First, add 30 to 10.

Then, multiply your answer (40) by 21.

Finally, you get your final answer of $840.

6 0
3 years ago
C= 5/9 (F−32)
Grace [21]

Answer:

C = 5/9 (F - 32)

This is a temperature scale change comparison.

By this we understand, that ,

1°C = 5/9°F

Which is equal to, 5/9°F = 1°C

These two statements are satisfied by I. and II.

So, the correct answers are, I. and II.

If my answer helped, kindly mark me as the brainliest!

Thank You!!

5 0
3 years ago
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