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zlopas [31]
3 years ago
8

What is the value of the expression shown below?

Mathematics
2 answers:
myrzilka [38]3 years ago
7 0

Answer:

8 and 1 over 6 . Check it if you can , I wouldn't want you to get it wrong :)

Step-by-step explanation:

Eduardwww [97]3 years ago
7 0
Answer:

8 and 1 over 6

Explanation: Sorry if it’s wrong but I think it’s correct :3
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What is the domain of the function y=3/x-1?<br> O<br> -00 O-1 O 0 O 1
viktelen [127]

Answer:

x ≠ 1.

Step-by-step explanation:

In mathematics, anything divided by 0 is null. It is not valid. And so, in this case, x - 1 must never equal 0, but it can be any number other than 0.

x - 1 = 0

x = 1

That means that the domain of the function is x ≠ 1.

Hope this helps!

6 0
2 years ago
Consider a binomial distribution of 200 trials with expected value 80 and standard deviation of about 6.9. Use the criterion tha
mote1985 [20]

Answer:

The correct answer is option 'a' : 120 is more than 2.5 standard deviations above the expected value.

Step-by-step explanation:

For an exponential distribution we have

The expected value μ = 80

No of trails n = 200

Thus we have

p=\frac{80}{200}=0.4

The deviation is related to expected value and probability as

\sigma =\sqrt{np(1-p)}\\\\\therefore \sigma =\sqrt{200\cdot 0.4\cdot (1-0.4)}=6.9

Thus the values between the given deviation is

x_{1}=80-2.5\times 6.9=62.75\\\\x_{2}=80+6.9\times 2.5=97.25

Now since 120 successes are out of the range of [62.75,97.25] thus 120 is more than the expected value.

5 0
3 years ago
Please I need actual help with these!!!! I will mark brainliest if right! Please don't answer if you don't know it!!(I will repo
MrMuchimi

Answer:

Step-by-step explanation:

first pic

Statement.                     Reasons

1. AC is congruent to     1.Given

  HF

2.BC is congruent to.     2. Given

FE

3. Measure angle ACB.   3. Right angles are congruent

is congruent to Measure

angle HFE

4. Triangle ABC is

congruent to Triangle HEF 4. SAS, side angle side

second pic

statement.                          reason

1.Angle K is congruent       1. Given

to angle M

2.KL equals ML.                  2. Given

3.Measure angle KLJ.         3.Vertical angles are congruent

is congruent to Measure

angle MLP

4Triangle JKL is congruent.  4. ASA, angle side angle

to triangle PML

third pic

statement.                    reason

1. Already stated.          1. Already stated

2 PT congruent to RS.   2. Given

3. Angle PQT congruent 3. Verticle angles are congruent

to Angle RQS

4. trianlge PQT is congruent to Triangle RQS.  4. ASA, angle side angle

( hope this helps! )

3 0
2 years ago
Read 2 more answers
Austin buys $10 worth of food for his dog each week. There are 52 weeks in a year.
ololo11 [35]

Answer:

b i think

Step-by-step explanation:

8 0
2 years ago
What is the length of angle EF in the right triangle below
salantis [7]

Answer:

E.  √180

Step-by-step explanation:

Using Pythagoras' theorem

a^2 + b^2 = c^2 (c = hypotenuse, a and b are legs)

a^2 = c^2 - b^2

a^2 = 18^2 - 12^2

a^2 = 324 - 144

a^2 = 180

a = √180

Answer

E.  √180

6 0
3 years ago
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