Can anyone tell me how to work out 4/7 of 5 ????

Mathematics

2 answers:

Alja [10]4 years ago

8 0

4/7*5 which is 2 6/7

HACTEHA [7]4 years ago

7 0

Here, 4/7 * 5
Multiply numerators together, and denominators together
It would be: 4 * 5 / 7 * 1 = 20/7

So, your final answer is 20/7

Hope this helps!

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Could someone please help? Maybe with an explanation? Thank you :)

goblinko [34]

The first one because angle one is the same degrees as angle 8, which proves why p is parallel to q

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4 years ago

The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000

mel-nik [20]

Answer:

0.018 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 60,000 miles

Standard Deviation, σ = 1500 miles

We are given that the distribution of tread life is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(brand will last between 56,850 miles and 57,300 miles)

$P(56850 \leq x \leq 57300) = P(\displaystyle\frac{56850 - 60000}{1500} \leq z \leq \displaystyle\frac{57300-60000}{1500}) = P(-2.1 \leq z \leq -1.8)\\\\= P(z \leq -1.8) - P(z < -2.1)\\= 0.0359 - 0.0179 = 0.018= 1.8\%$

$P(56850 \leq x \leq 57300) = 1.8\%$

0.018 is the probability a certain tire of this brand will last between 56,850 miles and 57,300 miles.

7 0

3 years ago

Mrs.smells math class has 20 questions worth 100 points. if the multiple choice are worth 3 points and the short answer is worth

andreyandreev [35.5K]

Let, Number of multiple choice = x
Number of short answer question = y

Now, x + y = 20
& 3x + 11y = 100

Multiply 1st equation by 3, and subtract from eq,2,
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After subtraction,
8y = 40
y = 40/8
y = 5

Now, substitute in eq (1),
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In short, There are 15 Multiple choice & 5 short answer questions

Hope this helps!

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3 years ago

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inysia [295]

Mark me as brainliest and follow me

use this formula