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Trava [24]
2 years ago
6

What does x equal In this equation?

Mathematics
1 answer:
Oliga [24]2 years ago
6 0
\frac{x}{15} = \frac{4}{5} \\ Change\ both\ fractions\ to\ a \\ common\ denominator, \\ \\ \frac{x}{15} = \frac{4 \times 3}{5 \times 3} \\ \frac{x}{15} = \frac{12}{15} \\ x = 12
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The average amount of time to finish this quiz is 26 minutes with a standard deviation of 1.2 minutes. What is the probability t
boyakko [2]

Answer:

What is the probability that you will finish this quiz in 23.84 minutes or less?

0.03593

Write your answer as a percentage with 2 decimals

= 3.59%

Step-by-step explanation:

The z score formula is given as:

z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

Mean = 26 minutes

Standard deviation = 1.2 minutes.

The probability that you will finish this quiz in 23.84 minutes or less(≤) is calculated as:

z = (x-μ)/σ

z = 23.84 - 26/1.2

z = -1.8

Probability value from Z-Table:

P(x ≤ 23.84) = 0.03593

Converting to percentage

0.03593 × 100

= 3.593

Approximately to 2 decimal places = 3.59%

7 0
3 years ago
Multiple and simplify 4/7•35
allsm [11]

Answer:

20

Step-by-step explanation:

4/7 x 35 = 4 x 5

5 0
3 years ago
Read 2 more answers
Good strategy for using slope formula
Fantom [35]
I personally use y2-y1 over x2-x1 because it's simple.  Plot two y values and two x values.  The first ones you plotted are x1 and y1, the others are x2 y2.  Now subtract y2-y1 and x2-x1.  Afterwards, divide the y value by the x value, that will give you slope.
3 0
3 years ago
What is a proportion (please don't explain it like a teacher)?
dlinn [17]

Answer:

a number to another number

Step-by-step explanation:

One number in comparison to another number

for example 3/4=4/5x

4 0
3 years ago
Read 2 more answers
Which of the following best describes an irrational number?
Furkat [3]

Answer:

Option D is correct.

D- A number that cannot be expressed as a fraction, , where p and q are integers

Step-by-step explanation:

Irrational number:

An irrational number can not be expressed as a fraction or ratio of  integers, like \frac{p}{q} where p and q are integers

And also it can not be expressed as terminating decimal or repeating decimal

Example of the irrational number is given below.

\sqrt{8}= 2.82842

\pi = 3.14285..

\sqrt{3}= 2.82842

Therefore option D (A number that cannot be expressed as a fraction, , where p and q are integers) is correct .  

8 0
3 years ago
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