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Helga [31]
3 years ago
9

ILL BRAINLIEST YOU PLEASE HELP ME

Mathematics
1 answer:
Margaret [11]3 years ago
8 0

Answer: x = 34

Step-by-step explanation: ok so when you put 2 triangles together and make a rectangle the length and width will still be the same! so the answer is 34ft

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X<br> f(x) =<br> x2 + 4x<br> .<br> x2_4
PtichkaEL [24]
The answer is 1/(x+4)
Explanation:
You would factor out the denominator
So,
(X-4)(x+4)=x^2-16
So, x-4/(x+4)(x-4)
Then x-4 cancels each other out from the numerator and denominator
Leaving 1/x+4
6 0
2 years ago
A production process is checked periodically by a quality control inspector. the inspector selects simple random samples of 30 f
777dan777 [17]

Answer:

Population Mean = 2.0

Population Standard deviation = 0.03

Step-by-step explanation:

We are given that the inspector selects simple random samples of 30 finished products and computes the sample mean product weight.

Also, test results over a long period of time show that 5% of the values are over 2.1 pounds and 5% are under 1.9 pounds.

Now, mean of the population is given the average of two extreme boundaries because mean lies exactly in the middle of the distribution.

So,   Mean, \mu = \frac{1.9+2.1}{2} = 2.0

Therefore, mean for the population of products produced with this process is 2.

Since, we are given that 5% of the values are under 1.9 pounds so we will calculate the z score value corresponding to a probability of 5% i.e.

             z = -1.6449 {from z % table}

We know that z formula is given by ;  

                Z = \frac{Xbar - \mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

              -1.6449 = \frac{1.9 - 2.0}{\frac{\sigma}{\sqrt{n} } }     ⇒  \frac{\sigma}{\sqrt{n} }  = \frac{-0.1}{-1.6449}  

                                           ⇒ \sigma = 0.0608 * \sqrt{30}  {as sample size is given 30}

                                           ⇒ \sigma = 0.03 .

Therefore, Standard deviation for the population of products produced with this process is 0.0333.

7 0
3 years ago
Simplify (6+5x)+(7x+3)
emmasim [6.3K]

Answer: 12x + 9

Step-by-step explanation:

<u>Given </u>

(6 + 5x) + (7x + 3)

<u>Put like terms together</u>

=5x + 7x + 6 + 3

<u>Combine like terms </u>

=\boxed {12x+9}

Hope this helps!! :)

Please let me know if you have any questions

8 0
3 years ago
What's 9.98 in word form
Komok [63]
Nine and ninety-eight hundreths
5 0
3 years ago
Solve for R. P=R−C What is R equal to?
kykrilka [37]

Answer:

R = P+C

Step-by-step explanation:

P = R-C

+C    +C

R = P+C

6 0
3 years ago
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