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3 years ago

There are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag.

Mathematics

2 answers:

RUDIKE [14]3 years ago

5 0

Answer:

52%

Step-by-step explanation:

bogdanovich [222]3 years ago

3 0

Answer:

52%

Step-by-step explanation:

First we have to find the total:

5 + 8 + 12= 25

Now we have to add how many red and how many blue marbles.

5 + 8 = 13.

Now you can tell that 13 > 12 so we can predict that the answer is 52%

However, lets go ahead and divide 13 from 25

13/25 = .52

This means that the answer is 52%!

~<em>CaityConcerto</em>

You might be interested in

If 64 is added to a number, the result is 40 less than three times the number. Find the number.

damaskus [11]

Answer:

Step-by-step explanation:

Let the required number be x.

According to the given description:

x + 64 = 3x - 40

64 + 40 = 3x - x

104 = 2x

x = 104/2

x = 52

Thus, the required number is 52.

8 0

3 years ago

Please help 10 points

Margarita [4]

Answer:

The value of x is -2 and 2.

Step-by-step explanation:

When solve an expression, you have to make the expression equals to 0 by moving all the terms to one side :

x² - 3x - 1 = -3x + 3

x² - 3x - 1 + 3x - 3 = 0

x² - 4 = 0

Next, you have to factorize and solve it :

x² - 4 = 0

x² + 2x - 2x - 4 = 0

x(x + 2) - 2(x + 2) = 0

(x + 2)(x - 2) = 0

x + 2 = 0

x = -2

x - 2 = 0

x = 2

6 0

3 years ago

Can you pls help me with this plsss

Gelneren [198K]

Sure! So you need to make an addition problem, for example, 200+25; that equals 225, right? Now you need to subtract from 225. For example, 225-10= 215. Hope I helped!

8 0

3 years ago

I will mark u brainliest

shutvik [7]

Answer:

2a...true

2b...false

2c....false

2d....false because you are supposed to add and not multiply

8 0

3 years ago

In response to the increasing weight of airline passengers, the Federal Aviation Administration in 2003 told airlines to assume

kobusy [5.1K]

Answer:

The probability that the total weight of the passengers exceeds 4222 pounds is 0.0018

Step-by-step explanation:

The Central limit Theorem stays that for a large value of n (21 should be enough), the average distribution X has distribution approximately normal with mean equal to 182 and standard deviation equal to 30/√21 = 6.5465. Lets call W the standarization of X. W has distribution approximately N(0,1) and it is given by the formula

$W = \frac{X - \mu}{\sigma} = \frac{X - 182}{6.5465}$

In order for the total weight to exceed 4222 pounds, the average distribution should exceed 4222/21 = 201.0476.

The cummulative distribution function of W will be denoted by $\phi$ . The values of $\phi$ can be found in the attached file.

$P(X > 201.0476) = P(\frac{X-182}{6.5465} > \frac{201.0476 - 182}{6.5465}) = P(W > 2.91) = 1-\phi(2.91) = \\1-0.9982 = 0.0018$

Therefore, the probability that the total weight of the passengers exceeds 4222 pounds is 0.0018.

Download pdf

6 0

3 years ago