Answer the questions for 2.) please! (the Science Test Scores question)

Mathematics

1 answer:

Burka [1]2 years ago

8 0

The median is 65
$60 + 70 = 130 \\ 130 \div 2 = 65$
the 2nd and third quartile is 65
$50 + 60 + 70 + 80 = 260 \\ 260 \div 4 = 65$

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2.25meter long and 1.8 meters wide what is the area

Alexxandr [17]

I'm assuming that you're talking about the dimensions of a rectangle. To find the area, you can multiply the length (2.25 meters) by the width (1.8 meters).

2.25*1.8=4.05
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10. A bag contains 4 red balls, 6 green balls and some white balls. If the probability of not drawing a white ball in one draw b

klasskru [66]

Answer:

No of white balls = 5

Step-by-step explanation:

Given that,

Total no of red balls = 4

Total no of green balls = 6

The probability of not drawing a white ball in one draw be, $P=\dfrac{2}{3}$

We need to find the number of white balls. Let there are x balls.

The probability of drawing a white ball = 1 - the probability of not drawing a white ball

= 1 -2/3

= 1/3

Using the formula for solving probability of having a white ball.

$P=\dfrac{\text{favorable outcome}}{\text{total no of outcomes}}\\\\\dfrac{1}{3}=\dfrac{x}{4+6+x}\\\\\dfrac{1}{3}=\dfrac{x}{10+x}\\\\10+x=3x\\\\10=2x\\\\x=5$

Hence, there are 5 white balls.

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2 years ago

Which correctly identify a pair of congruent line segments? A)GH and JK B)GH and LM C)LM and NP D) AB and NP

Mnenie [13.5K]

Answer:The answer is B:GH and LM because they are the same length

Step-by-step explanation:

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2 years ago

Read 2 more answers

The following observations 40, 42, 45, x-1, x +1, 51, 54, 62 are arranged in

Harlamova29_29 [7]

Step-by-step explanation:

Here n = 8 (even number)

$\therefore \: \frac{n}{2} = \frac{8}{2} = 4 \\ \\\&\:\: \frac{n}{2} + 1 = 4 + 1 = 5 \\ \\ hence \: \\ median = \frac{ {4}^{th} term + {5}^{th} term}{2} \\ \\ \therefore \: 49 = \frac{x - 1 + x + 1}{2} \\ \\ \therefore \: 49 = \frac{2x}{2} \\ \\ \therefore \: 49 = x \\ \\ \huge \purple { \boxed{\therefore \: x = 49}}$