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Pani-rosa [81]
2 years ago
9

Five friends all brought some cakes with them when they met. Each of them gave a cake to each of the others. They then ate all t

he cakes they had just been given. As a result, the total number of cakes they had between them decreased by half. How many cakes did the five friends have at the start?
Mathematics
1 answer:
Sergeeva-Olga [200]2 years ago
8 0

Answer:

1/2 i hope i helped

Step-by-step explanation:

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josh is 49 inches tall. his father is 70 inches tall. what percent of his father's height is josh's height
DedPeter [7]

Answer:

Josh is 70% of his fathers height

Step-by-step explanation:

49/70=0.70

0.70 into a percent is 70%

6 0
3 years ago
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How do you solve 3px=2q (r-5x) , Solve for x ??
VashaNatasha [74]
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2 years ago
Six hundred paving stones were examined for cracks, and 20 were found to be cracked. The same 600 stones were then examined for
spin [16.1K]

Answer:

a) probability that is cracked=1/30 (3.33%)

b) probability that is discoloured = 29/600 (4.83%)

c) probability that is cracked and discoloured =  11/600 (1.83%)

Step-by-step explanation:

assuming that each stone is equally likely to be chosen then defining the events C= the stone is cracked , D= the stone is discoloured , N= the stone is neither cracked or discoloured, then

P(C)= number of favourable outcomes/total number of outcomes = 20 stones/600 stones = 1/30 (3.33%)

P(D)= number of favourable outcomes/total number of outcomes = 29 stones/600 stones = 29/600 (4.83%)

the probability that is discoloured and cracked is P(C∩D) , where

P(C∪D)=P(C) + P(D)-P(C∩D)

and

P(C∪D)= 1- P(N)

thus

1- P(N)=P(C) + P(D)-P(C∩D)

P(C∩D)= P(N)+P(C)+P(D) -1

replacing values

P(C∩D)= P(N)+P(C)+P(D)=562/600 + 20/600 + 29/600 -1= 611/600 -1 = 11/600

thus

P(C∩D)=  11/600 (1.83%)

3 0
2 years ago
!! PLEASE I NEED HELP ASAP, I WILL MARK THE FIRST PERSON THAT ANSWERS WITH THE RIGHT ANSWER THE BRAINIEST !!!
Tasya [4]

Answer:

A is the answer

Step-by-step explanation:

7 0
3 years ago
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Vikki [24]
Do 65/100. Gives you 0.65 right.
So then do 0.65*40 = 26
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