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4 years ago

What is 19/20 as a decimal

2 answers:

7 0

You have to turn 19/20 into ?/10 so you have to divide 20 by 2 to get 10 so you have to do the same with 19 so 19 divide by 2 is 9.5. As a fraction it is 9.5/10 but it has to be decimal so u times each number by 10. 9.5 x 10 = 95, 10 x 10 = 100

So it is 0.95

NikAS [45]4 years ago

7 0

It is 0.95 because 19/20 is the same as 19 divide by 20.
19 '/. 20 = 0.95

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In a class 22 of students, 14 have a brother and 9 have a sister. There are 2 students who do not have any siblings. What is the

djyliett [7]

I believe this is the way to solve it.
22 - 2 = 20
20 is 90.9% of 22
So the probability of choosing a student with a sibling at random should be 90.9% (or you can round up to 91%)

I hope this helps :)

5 0

4 years ago

A pattern exists among the units digit of the posers of 8 as shown in the diagram.

guajiro [1.7K]

Answer:

B) 4

Step-by-step explanation:

We can solve this by observing some pattern.

The powers ending in 4 as unit digit are:

${8}^{2} , {8}^{6} , {8}^{10} , {8}^{14} , {8}^{20} ,...$

The exponents form the sequence:

2,6,10,14,20,...

We need to check if 62 belongs to this sequence.

This is an arithmetic sequence with a common difference of 4 and a first term of 2.

The explicit formula is

$2 + 4(n - 1)$

We equate this to 62 and solve for n.

$2 + 4(n - 1) = 62 \\ 4(n - 1) = 60 \\ n - 1 = 15 \\ n = 16$

Since n is a natural number, 62 belongs to the sequence.

Hence

${8}^{62}$

will have a unit digit of 4.

4 0

3 years ago

Doug earns $3.00 per hour working at a restaurant. On Friday, he spent 1 3/4 hours cleaning, 2 1/3 hours doing paperwork, and 1

enyata [817]

Answer:

Step-by-step explanation:

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3 years ago

Two well-known aviation training schools are being compared using random samples of their graduates. it is found that 70 of 140

andreyandreev [35.5K]

In a two-tailed test, the p-value is 0.0275, so this means that at a value of 0.025 we should reject the hypothesis of equal proportion. This is because as p = 0.0275 and we follow the rule P-value < p

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4 years ago

Is 22π a whole number

FrozenT [24]

Answer:

No it is irrational number.

Step-by-step explanation:

because 2pie cannot be expressed as a quotient of interger.

5 0

3 years ago