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bulgar [2K]
3 years ago
11

A right pyramid with a square base has a base length

Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0

Answer:

1/3 x^2(x+2) is the expression ...

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Need help pleaseI was bad at math in school so lwant to learn
aleksklad [387]

The probability of an event is expressed as

Pr(\text{event) =}\frac{Total\text{ number of favourable/desired outcome}}{Tota\text{l number of possible outcome}}

Given:

\begin{gathered} \text{Red}\Rightarrow2 \\ \text{Green}\Rightarrow3 \\ \text{Blue}\Rightarrow2 \\ \Rightarrow Total\text{ number of balls = 2+3+2=7 balls} \end{gathered}

The probability of drwing two blue balls one after the other is expressed as

Pr(\text{blue)}\times Pr(blue)

For the first draw:

\begin{gathered} Pr(\text{blue) = }\frac{number\text{ of blue balls}}{total\text{ number of balls}} \\ =\frac{2}{7} \end{gathered}

For the second draw, we have only 1 blue ball left out of a total of 6 balls (since a blue ball with drawn earlier).

Thus,

\begin{gathered} Pr(\text{blue)}=\frac{number\text{ of blue balls left}}{total\text{ number of balls left}} \\ =\frac{1}{6} \end{gathered}

The probability of drawing two blue balls one after the other is evaluted as

\begin{gathered} \frac{1}{6}\times\frac{2}{7} \\ =\frac{1}{21} \end{gathered}

The probablity that none of the balls drawn is blue is evaluted as

\begin{gathered} 1-\frac{1}{21} \\ =\frac{20}{21} \end{gathered}

Hence, the probablity that none of the balls drawn is blue is evaluted as

\frac{20}{21}

8 0
1 year ago
Please answer these<br> i need this
Len [333]

Answer:

1. no

2. 8

Step-by-step explanation:

1. 20 does not equal 4/5

2. 6x=48 divide 6 on both sides

x=8

5 0
3 years ago
Read 2 more answers
2. The Soccer Club is selling T-shirts and washing cars to raise money for a summer trip. Last week, the club raised $292.50 by
Rudik [331]
15x = 292.50
Divide 15 from both sides
X= 5.85
1 T-shirt = $5.85

45x = 747.50
Divide 45 from both sides
X= 16.61

1 T-shirt = $ 16.61
7 0
3 years ago
I'd really appreciate it if someone could help me with these square problems :/
adelina 88 [10]
I would but I don’t want to ;/
3 0
3 years ago
"What is the difference between a ratio and its related rate and unit rate?"
Vinil7 [7]

Answer:

Step-by-step explanation:

The ratio is the relationship of two numbers. ... A rate is a little bit different than the ratio, it is a special ratio. It is a comparison of measurements that have different units, like cents and grams. A unit rate is a rate with a denominator of 1.

7 0
2 years ago
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