2 years ago

Three less than three times a number is three more than five times that same number . What is the number

Mathematics

1 answer:

Pachacha [2.7K]2 years ago

4 0

Answer: -3

Solution:

Let n be that number.

So,

Three less than 3*no = 3 more than 5*no

3*n-3=5*n+3

5n-3n=-3-3

2n=-6

n=-3

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Divide 180 in a ratio of 4:5:9

Amiraneli [1.4K]

Ratio in which 180 should be divided is 4:5:9
firstly we need to find the total number of portions
this we can find by adding all the numbers making up the ratio
4 + 5 + 9 = 18
180 is made of 18 portions
size of 1 portion = 180 / 18 = 10
when dividing 180 into the respective ratio 4:5:9 the portions are as follows
4 x 10 = 40
5 x 10 = 50
9 x 10 = 90
therefore when we divide 180 in the ratio 4:5:9
the answer we get is
40 :50: 90

7 0

3 years ago

Read 2 more answers

A survey of 125 households was done to investigate whether households have laptops, tablets, or

riadik2000 [5.3K]

Answer:

3) 0.326

Step-by-step explanation:

Total Number of surveyed households =125

We want to determine the probability that a randomly selected household would have a laptop given that it does not have a tablet.

Written in Probability notation: P(Laptop|No Tablet)

$P(Laptop|No Tablet)=\dfrac{P(L\cap T')}{P(T')} \\=\dfrac{31/125}{95/125}\\=\dfrac{31}{95}\\\\=0.326$