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2 years ago

A number is chosen at random from 1 to 50. Find the probability of selecting numbers less than 13

Mathematics

1 answer:

Oksanka [162]2 years ago

4 0

Answer:

6/25

Step-by-step explanation:

Less than 13, there is 12 numbers in total

Probability = favourable outcomes/ total outcomes

= 12 / 50

= 6/25 or 0.24 is the probability of selecting numbers less than 13

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The mean time it takes for workers at a factory to insert a delicate bolt into an engine is 15 minutes. The standard deviation o

faust18 [17]

Answer:

required probability is 0.8413

Step-by-step explanation: Given mean $\mu =15$ minutes, standard deviation $\sigma =4$ seconds, we need to find $P\left ( X\leq 19 \right )$ . Using z score

$z=\frac{X-\mu }{\sigma }\\=\frac{19-15}{4}\\=1$

So,

$P\left ( X\leq 19 \right )\\=P\left ( Z\leq 1 \right )\\=0.8413$

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3 years ago

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2 years ago

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3 years ago

Read 2 more answers

Round to the nearest hundredth? A 4 ? 35° с B

DaniilM [7]

The length of the unknown side length, |AB|, is 6.97

<h3>Trigonometry</h3>

From the question, we are to determine the value of the unknown side length

The unknown side length is the hypotenuse

Using SOH CAH TOA

We can write that

sin 35° = 4/|AB|

∴ |AB| = 4 /sin35°

|AB| = 4 /sin35°

|AB| = 6.97

Hence, the length of the unknown side length, |AB|, is 6.97

Learn more on Trigonometry here: brainly.com/question/22099203

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1 year ago

Write the slope intercept form of a line through (6, -7) and parallel to y= x - 9

AveGali [126]

Answer:

y = x - 13

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = x - 9 ← is in slope- intercept form

with slope m = 1

Parallel lines have equal slopes, thus

y = x + c ← is the partial equation of the parallel line

To find c substitute (6, - 7) into the partial equation

- 7 = 6 + c ⇒ c = - 7 - 6 = - 13

y = x - 13 ← equation of parallel line

7 0

3 years ago