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4 years ago

Can you help me with this please. Please show your work. Thx in advance

Mathematics

2 answers:

avanturin [10]4 years ago

8 0

First Draw Picture ====> <JKL

Draw Ray =====> KM

Equation:

===> m<JKM + m<MKL = m<JKL

Solve:

9x - 10 + 83 = 127

Steps:

9x - 10 + 83 = 127

Add/Subtract the Numbers:

-10 + 83 = 73

9x + 73 = 127

Subtract 73 from both sides:

9x + 73 - 73 = 127 - 73

Simplify:

9x = 54

Divide both sides by 9:

9x/9 = 54/9

x = 6

Answer =======> The Value of ======> x = 6

Hope that helps!!!! : )

pentagon [3]4 years ago

4 0

That is correct I think it is

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I need help with this question

balu736 [363]

Answer and Step-by-step explanation:

What the question is asking is that it wants you to make the equation show equal to n.

We can do that by dividing both sides by RT, to get n by itself.

$PV = nRT\\\\\\\frac{PV}{RT} = n$ ⇔ This is the answer.

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3 years ago

Are he two expression equivalent if x=5. 7x+3x. 9x+5

a_sh-v [17]

Answer:

yes, the two expressions are equivalent when x = 5

Step-by-step explanation:

7(5)=35

3(5)=15

35+15=50

9(5)=45

45+5=50

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3 years ago

Read 2 more answers

Assume that X is a binomial random variable with n = 27 and p = 0.90. Calculate the following probabilities. (Do not round inter

Yuki888 [10]

Answer:

a) $P(X=26) = 27C26 (0.9)^{26} (1-0.9)^{27-26}= 0.1744$

b) $P(X=25) = 27C25 (0.9)^{25} (1-0.9)^{27-25}= 0.2520$

c) $P(X=25) = 27C25 (0.9)^{25} (1-0.9)^{27-25}= 0.2520$

$P(X=26) = 27C26 (0.9)^{26} (1-0.9)^{27-26}= 0.1744$

$P(X=27) = 27C27 (0.9)^{27} (1-0.9)^{27-27}= 0.0582$

And addind the values we got:

$P(X\geq 25)= P(X=25)+P(X=26)+P(X=27)=0.2520+0.1744+0.0582=0.4846$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=27, p=0.9)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

Part a

We want this probability:

$P(X=26)$

And we can use the probability mass function and we got:

$P(X=26) = 27C26 (0.9)^{26} (1-0.9)^{27-26}= 0.1744$

Part b

We want this probability:

$P(X=25)$

And we can use the probability mass function and we got:

$P(X=25) = 27C25 (0.9)^{25} (1-0.9)^{27-25}= 0.2520$

Part c

We want this probability:

$P(X\geq 25)= P(X=25)+P(X=26)+P(X=27)$

And we can use the probability mass function and we got:

$P(X=25) = 27C25 (0.9)^{25} (1-0.9)^{27-25}= 0.2520$

$P(X=26) = 27C26 (0.9)^{26} (1-0.9)^{27-26}= 0.1744$

$P(X=27) = 27C27 (0.9)^{27} (1-0.9)^{27-27}= 0.0582$

And addind the values we got:

$P(X\geq 25)= P(X=25)+P(X=26)+P(X=27)=0.2520+0.1744+0.0582=0.4846$

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3 years ago

Which graph represents the solution to this inequality? -1/4(12x+8)<2x+11

bekas [8.4K]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Factorize : x^2-12x-28+16y-y^2

bija089 [108]

Answer:

x=14

x=−2

Step-by-step explanation:

Factoring x2-12x-28

The first term is, x2 its coefficient is 1 .

The middle term is, -12x its coefficient is -12 .

The last term, "the constant", is -28

Step-1 : Multiply the coefficient of the first term by the constant 1 • -28 = -28

Step-2 : Find two factors of -28 whose sum equals the coefficient of the middle term, which is -12 .

-28 + 1 = -27

-14 + 2 = -12 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -14 and 2

x2 - 14x + 2x - 28

Step-4 : Add up the first 2 terms, pulling out like factors :

x • (x-14)

Add up the last 2 terms, pulling out common factors :

2 • (x-14)

Step-5 : Add up the four terms of step 4 :

(x+2) • (x-14)

Which is the desired factorization

6 0

3 years ago