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2 years ago

Help MOI Again PLEASE lol

Mathematics

2 answers:

natima [27]2 years ago

8 0

Answer:

-2

Step-by-step explanation:

-5a+20a+-4a_-6=-16

20a-9a+6=-16

11a+6=-16

11a=-16-6

11a=-22

a=-22/11

a=-2

Evgesh-ka [11]2 years ago

4 0

Answer:

-5a + 20a +-4a - -6= -16

Answer- a= -2

Step-by-step explanation:

Hope this helps!

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Need help . This is multiply and dividing rational expressions

Lemur [1.5K]

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3 years ago

Seven customers enter a clothing store and are observed to determine if they will make a purchase. The store owner states that t

blondinia [14]

Answer: Mean = 5.25

Variance = 1.3125

Standard deviation = 1.456

Step-by-step explanation:

The mean and variance of a binomial distribution with parameters n (number of trials) and p ( the probability of getting success in each trial) is given by :-

$\text{Mean}=np\\\\\text{Variance}=np(1-p)$

Given : The total number of enter a clothing store : n=7

The probability of a customer making a purchase= 0.75

Now,

$\text{Mean}=7(0.75)=5.25\\\\\text{Variance}=7(0.75)(0.25)=1.3125\\\\\Rightarrow\ \text{Standard deviation}=\sqrt{1.3125}=1.14564392374\approx1.1456$

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3 years ago

Which statement is true?

ch4aika [34]

I believe C is correct,
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3 years ago

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Lelu [443]

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2 years ago

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Sharma is building a shed and wants to determine the measurements for the roof. The span of the roof will be 10 feet and she pla

Stolb23 [73]

Answer:

In the figure below :

d = 2.08, e = 5, c = 5.42 , a = 22.78°, b = 67.22°

Step-by-step explanation:

Side lengths :

$2\cdot e=10\\ \Rightarrow e=5 feet\\\frac{d}{e}=\frac{5}{12}\\\Rightarrow d=\frac{25}{12}\approx 2.08 feet$

By pythagoras theorem,

$c^2=d^2+e^2\\c^2=29.33\\c\approx 5.42 feet$

Now to find angles,

$a+b+90^{\circ}=180^{\circ}\\\Rightarrow a+b=90^{\circ}\\\tan a=\frac{d}{e}\\\Rightarrow \tan a =0.42\\\Rightarrow a=22.78^{\circ}\\\Rightarrow b=67.22^{\circ}$

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2 years ago