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2 years ago

What is 51.8 rounded to the nearest one

Mathematics

2 answers:

Thepotemich [5.8K]2 years ago

8 0

The answer is 52

In the number 51.8 the 8 is 5 or higher so it rounds up to 52 not down to 51

Vilka [71]2 years ago

3 0

Answer:

Step-by-step explanation:

51.8

We are rounding to the ones place, so we look at the digit in the tenths place, the 8.

8>5 so we round the ones digit up

51.8 becomes 52

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Choose the product. -7p 3(4p 2 + 3p - 1)

DIA [1.3K]

Answer:

14p -3

Step-by-step explanation:

-7p 3(4p 2+3p - 1)

3x4= 12p

3x3=9p

12+9= 21

21-7=14p

3x2=6

3x-3=-9

-9 +6= -3

= 14p -3

hope this helps :)

7 0

1 year ago

A recent survey shows that the probability of a college student drinking alcohol is 0.6. further, given that the student is over

Murrr4er [49]

Answer:

0.24

Step-by-step explanation:

These events are not mutually exclusive; this means they can happen at the same time.

For two events A and B that are not mutually exclusive,

P(A and B) = P(A) * P(B|A)

Let A be the event "over 21 years old" and B be the event "drinks alcohol".

The probability that a student is over 21 years old is 0.3; this is because 30% of the students are over 21 years old.

The probability that a student drinks alcohol given they are over 21 is 0.8.

This gives us

P(A and B) = 0.3(0.8) = 0.24

8 0

2 years ago

Read 2 more answers

Vanna is saving for a trip. The hotel room will be $298.17 for 3 nights, and there will be additional fees. What is her daily co

docker41 [41]

Answer:

Step-by-step explanation:

Total cost for the three nights

Total_3 = $298.17 + 3*u

Where u represents the unknown fees for a single day

To find the daily cost, we divide the previous equation by three

Daily cost = ($298.17 + 3*u)/3

Daily cost = ($99.39 + u)

So, if we create an inequality for the daily cost

Let x = Daily cost

x > $99.39

She will pay more than $99.39 per night

7 0

2 years ago

How to factorise 5h^2-12hg

bonufazy [111]

Answer:

$h(5h-12g)$

Step-by-step explanation:

$5h^2-12hg$

When we factor expressions, we look for factors within the terms that are alike, or in other words, we look for common factors. Here, $5h^2$ and $12hg$ only have one common factor: $h$ . Therefore, to factorize this expression, divide both terms by $h$ .

$= h(\frac{5h^2}{h}-\frac{12hg}{h} )\\= h(5h-12g)$

Now, we've "carried" $h$ out of the expression and have therefore factored it.

I hope this helps!

7 0

2 years ago

Two different samples will be taken from the same population of test scores where the population mean and standard deviation are

Alenkinab [10]

Answer:

The sample consisting of 64 data values would give a greater precision.

Step-by-step explanation:

The width of a (1 - α)% confidence interval for population mean μ is:

$\text{Width}=2\cdot z_{\alpha/2}\cdot \frac{\sigma}{\sqrt{n}}$

So, from the formula of the width of the interval it is clear that the width is inversely proportion to the sample size (n).

That is, as the sample size increases the interval width would decrease and as the sample size decreases the interval width would increase.

Here it is provided that two different samples will be taken from the same population of test scores and a 95% confidence interval will be constructed for each sample to estimate the population mean.

The two sample sizes are:

n₁ = 25

n₂ = 64

The 95% confidence interval constructed using the sample of 64 values will have a smaller width than the the one constructed using the sample of 25 values.

Width for n = 25:

$\text{Width}=2\cdot z_{\alpha/2}\cdot \frac{\sigma}{\sqrt{25}}=\frac{1}{5}\cdot [2\cdot z_{\alpha/2}\cdot \sigma]$

Width for n = 64:

$\text{Width}=2\cdot z_{\alpha/2}\cdot \frac{\sigma}{\sqrt{64}}=\frac{1}{8}\cdot [2\cdot z_{\alpha/2}\cdot \sigma]$

Thus, the sample consisting of 64 data values would give a greater precision

5 0

2 years ago

Read 2 more answers