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4 years ago

Pleaseee HELPPP will mark Brainly

Mathematics

2 answers:

nirvana33 [79]4 years ago

6 0

Answer:

KE length: 17

x = 3

Step-by-step explanation:

In this, the length of KE and EM should be the same. So we can put the numbers we have into an equation:

4x + 5 = 6x - 1

Then we just simplify

1 + 5 = 6x - 4x

6 = 2x

x = 3

Now we should find the length of KE with the expression used for KE:

4(3) + 5

12 + 5

Therefore, the length of KE is 17

RoseWind [281]4 years ago

3 0

Answer:

KE=17

Step-by-step explanation:

X=3

12+5=17

18-1=17

hope this helps :)

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How do you solve fire x.

makkiz [27]

Answer:

x = 10

Step-by-step explanation:

Sum of all the angle of triangle = 180

71 + 50 + 6x - 1 = 180

71 + 50 -1 + 6x = 180

120 + 6x = 180

6x = 180 - 120

6x = 60

x = 60/6

x = 10

3 0

3 years ago

How much is 7 cups in pints Write your answer as a whole or mixed number in simplest form

katrin [286]

The answer is: 3 1/2

8 0

3 years ago

Suppose x has a distribution with μ = 10 and σ = 9. (a) If a random sample of size n = 43 is drawn, find μx, σ x and P(10 ≤ x ≤

JulsSmile [24]

Answer:

P(10 ≤ x ≤ 12) = 0.4274

Step-by-step explanation:

Population mean = u = 10

Population Standard Deviation = $\sigma$ = 9

Sample size = n = 43

Sample mean( $\mu_{x}$ ) is equal to the population mean. So,

Sample mean = $\mu_{x}$ = 10

Sample standard deviation( $\sigma_{x}$ ) is equal to population standard deviation divided by square root of sample size. So,

Sample standard deviation = $\sigma_{x}$ = $\frac{9}{\sqrt{43}}=1.372$

We have to find the probability that for a random sample of n = 43, the value lies between 10 and 12 i.e. P(10 ≤ x ≤ 12)

P(10 ≤ x ≤ 12) = P(x ≤ 12) - P( x ≤ 10)

We can find P(x ≤ 12 ) and P(x ≤ 10) by converting these values to z scores.

The formula for z score is:

$z=\frac{x-\mu_{x}}{\sigma_{x}}$

For x =12, we get:

$z=\frac{12-10}{1.3725}=1.457$

For x =10, we get:

$z=\frac{10-10}{1.3725}=0$

So,

P(x ≤ 12) - P( x ≤ 10) = P(z ≤ 1.457) - P(z ≤ 0)

From the z table,

P(z ≤ 1.457) = 0.9274

P(z ≤ 0) = 0.5

So,

P(x ≤ 12) - P( x ≤ 10) = P(z ≤ 1.458) - P(z ≤ 0) = 0.9274 - 0.5 = 0.4274

So,

P(10 ≤ x ≤ 12) = P(x ≤ 12) - P( x ≤ 10) = 0.4274

Therefore,

The probability that for a random sample of size 43, the mean lies between 10 and 12 is 0.4274.

8 0

3 years ago

Evaluate the expression when b=30 and c=6.

Reptile [31]

Step-by-step explanation:

Hey there!!

During evaluating the expression, you must follow,

put the value as given.
work according to the mathematical operation sign.

Here,

$i). \: b + {c}^{2}$

$= 30 + {6}^{2}$

= 30+36

= 66.

ii). b-4c

= 30 - 4×6

= 30 - 24

= 6

Hope it helps...

5 0

4 years ago

Where are all the tutors at??? Like it won’t even let me ask a tutor

BlackZzzverrR [31]

Answer:

It depends I think... do you have the app or website?

Step-by-step explanation:

I have the website and it does not have that option ://

I hope you work it out tho :)

Have a ncie day <3

7 0

3 years ago