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nadya68 [22]
4 years ago
9

How many edges does a rectangular pyramid have

Mathematics
2 answers:
leva [86]4 years ago
7 0
It has (8 edges) 5 vertices and 5 faces
timofeeve [1]4 years ago
3 0
A rectangular pyramid has 8 edges.
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Fifty balls are numbered 1 to 50 and red dot is painted on those balls that are a multiple of 8. the balls are mixed into a bag
vaieri [72.5K]
Total number of balls = 50
Balls numbered as multiple of 10 = 5
Balls with red dot on them = 6
Balls numbered as multiple of 10 and having red dot on them = 1 (i.e. Ball with number 40 on it)

Probability of Ball being numbered as multiple of 10 = P(T) = 5/50 = 1/10

Probability of Ball being marked by the dot = P(D) = 6/50 = 3/25

Probability of Ball being numbered as multiple of 10 and having a red dot on it = P (T ∩ D) = 1/50

The "or" ,"union" of two events can be expressed as:

P(T ∪ D) = P(T) + P(D) - P (T ∩ D)

Using the values, we get:

P(T ∪ D) = \frac{1}{10} + \frac{3}{25}- \frac{1}{50}=1/5

Thus, the probability that the ball is numbered with a multiple of 10 or has a red dot is 1/5 or 0.2
8 0
3 years ago
The price of a four-star dinner was $100 two decades ago. A report says that a dinner is 250% of what it was 20 years ago, how m
Nina [5.8K]

The dinner will cost $250 today.

<u><em>Explanation</em></u>

The price of a four-star dinner was $100 two decades ago and now the cost of the dinner is 250% of what it was 20 years ago.

So for finding the current cost, we will find 250% of $100 .

First we need to make 250% as decimal form after dividing it by 100. So....

250% = \frac{250}{100}= 2.50

Now we will multiply this 2.50 with $100 for getting the current cost of the dinner.

Thus, the current cost =(100* 2.50)dollar = 250 dollar



7 0
3 years ago
A company orders supplies from M distributors and wishes to place n orders (n &lt; M). Assume that the company places the orders
harkovskaia [24]

Answer:

a) 0.06048 b) 0.001344 c) 0.000294

Step-by-step explanation:

number of distributors = 10;

number of orders = 7

a)

There are 10 distributors for each order, so the no. of ways the 7 orders could be placed are = 10⁷ =10000000

no. of ways that orders goes to different distributors = ¹⁰C₇*7! = 604800

Probability = 604800/10000000 = 0.06048

b)

number of ways distributor 1 gets exactly 2 and distributor 2 gets exactly 3 orders = ⁷C₂*⁵C₃*8² = 13440

probability = 13440/10000000 = 0.001344

c)

number of ways distributor 1, 2,3 get exactly 2,3 and 1 order(s) = ⁷C₂*⁵C₃*²C₁*7¹ = 2940

probability = 2940/10000000 = 0.000294

3 0
4 years ago
12 to Write the equation of the plane passing through the points M(1, 2, 0) and N(2, 1, 1) parallel to the vector
Ksju [112]
You haven't given us the vector, and there an infinite number of planes through the two points.
5 0
3 years ago
How do I solve this
s344n2d4d5 [400]
The formula for the surface area of a cylinder is pi×2rh+2pi(r^2)
In this problem, r is 4 in and h is 16 in
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3 years ago
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