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kvasek [131]
3 years ago
10

I need help! would appreciate it

Mathematics
2 answers:
pashok25 [27]3 years ago
8 0
Give the person above brainly
I only answered so they could get brainly
Good luck
Ad libitum [116K]3 years ago
5 0

Answer:

x = 0.6

Step-by-step explanation:

We use tangent because the given numbers are opposite and adjacent from x

So, tangent (x) = opposite/adjacent

<u>tan(x) = 8.78/12</u>

<u />tan^{-1}(\frac{8.78}{12}) = x

x = 0.631664

Round to nearest tenth:

x ~ 0.6

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Trapezoid ABCD was dilated to create trapezoid A'B'C'D'.
Firdavs [7]

Answer:

  • True, True, False, False, True

Step-by-step explanation:

Trapezoid ABCD was dilated to create trapezoid A'B'C'D'.

Scale factor is 1/2 according to the coordinates.

<h3>The answer options</h3>

<u>The length of side AD is 8 units.</u>

  • AD = 4 - (-4) = 8
  • True

<u>The length of side A'D' is 4 units.</u>

  • A'D' = 2 - (-2) = 4
  • True

<u>The image is larger than the pre-image.</u>

  • False. It is 2 times smaller.

<u>Sides CD and C'D' both have the same slope, 2.</u>

Slopes of CD and C'D' are same: m = (0 - 4)/(4 - 2) = -4/2 = -2

  • False

<u>The scale factor is One-half.</u>

  • True
3 0
2 years ago
Read 2 more answers
Been stuck on this for a while
ozzi

Answer:

volume = 502.4 cm³

Step-by-step explanation:

volume = 4²π(10) = 160π = 502.4 cm³

4 0
3 years ago
Brenda had a balance of -$52 in her account. The bank charged her a fee of $10 for having a negative balance. What is her new ba
mart [117]
-$62, -52 minus another 10 would be -62
3 0
3 years ago
Read 2 more answers
What is the value of x in 2x+8+3x+5=123
notsponge [240]

Answer:

5x + 13 = 123

     - 13   - 13

5x = 110

5x/5 = 110/5

x = 22

3 0
3 years ago
We have n = 100 many random variables Xi ’s, where the Xi ’s are independent and identically distributed Bernoulli random variab
777dan777 [17]

Answer:

(a) The distribution of X=\sum\limits^{n}_{i=1}{X_{i}} is a Binomial distribution.

(b) The sampling distribution of the sample mean will be approximately normal.

(c) The value of P(\bar X>0.50) is 0.50.

Step-by-step explanation:

It is provided that random variables X_{i} are independent and identically distributed Bernoulli random variables with <em>p</em> = 0.50.

The random sample selected is of size, <em>n</em> = 100.

(a)

Theorem:

Let X_{1},\ X_{2},\ X_{3},...\ X_{n} be independent Bernoulli random variables, each with parameter <em>p</em>, then the sum of of thee random variables, X=X_{1}+X_{2}+X_{3}...+X_{n} is a Binomial random variable with parameter <em>n</em> and <em>p</em>.

Thus, the distribution of X=\sum\limits^{n}_{i=1}{X_{i}} is a Binomial distribution.

(b)

According to the Central Limit Theorem if we have an unknown population with mean <em>μ</em> and standard deviation <em>σ</em> and appropriately huge random samples (<em>n</em> > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.  

The sample size is large, i.e. <em>n</em> = 100 > 30.

So, the sampling distribution of the sample mean will be approximately normal.

The mean of the distribution of sample mean is given by,

\mu_{\bar x}=\mu=p=0.50

And the standard deviation of the distribution of sample mean is given by,

\sigma_{\bar x}=\sqrt{\frac{\sigma^{2}}{n}}=\sqrt{\frac{p(1-p)}{n}}=0.05

(c)

Compute the value of P(\bar X>0.50) as follows:

P(\bar X>0.50)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}>\frac{0.50-0.50}{0.05})\\

                    =P(Z>0)\\=1-P(Z

*Use a <em>z</em>-table.

Thus, the value of P(\bar X>0.50) is 0.50.

8 0
3 years ago
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