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3 years ago

5

Anthony leans a 28-foot ladder against a wall so that it forms an angle of 76^{\circ} ∘ with the ground. What’s the horizontal d

istance between the base of the ladder and the wall? Round your answer to the nearest tenth of a foot if necessary.

1 answer:

sveticcg [70]3 years ago

3 0

I hope this helps you feel free to contact me

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Women athletes at the university of colorado, boulder, have a long-term graduation rate of 67% (source: the chronicle of higher

Elodia [21]

The solution would be like this for this specific problem:

H0: p = p0, or <span>
H0: p ≥ p0, or
H0: p ≤ p0 </span>

find the test statistic z = (pHat - p0) / sqrt(p0 * (1-p0) / n)

where pHat = X / n

The p-value of the test is the area under the normal curve that is in agreement with the alternate hypothesis. <span>
H1: p ≠ p0; p-value is the area in the tails greater than |z|
H1: p < p0; p-value is the area to the left of z
H1: p > p0; p-value is the area to the right of z </span>

Hypothesis equation:

H0: p ≥ 0.67 vs. H1: p < 0.67

The test statistic is: <span>
z = ( 0.5526316 - 0.67 ) / ( √ ( 0.67 * (1 - 0.67 ) / 38 )
z = -1.538681 </span>

The p-value = P( Z < z ) <span>
= P( Z < -1.538681 )
<span>= 0.0619</span></span>

6 0

3 years ago

Solve for Z. 42=-7(z-3)

elixir [45]

42/7=Z-3

6=Z-3

Z=6+3

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3 years ago

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4 = 3x -x-4<br> I need steps to how to do this

vesna_86 [32]

Step-by-step explanation:

so first you combine like terms , 3x-x-4=4 turns into 4x-4=4 then u add 4 to both sides [inverse operations]

4x-4=4

+4 +4

--------------

4x= 8

----------

4. 4

×=2

then u use inverse operations. agian and divide 4 into 8 and you get 2 !! x = 2

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3 years ago

Read 2 more answers

A department store, on average, has daily sales of 28,651.79. the standard deviation pf sales is $1000. On Tuesday, the store so

adelina 88 [10]

Answer:

Tuesday's Z-score is 7.56

Step-by-step explanation:

We are given that a department store, on average, has daily sales of 28,651.79 and the standard deviation of sales is $1000.

Also, it is given that on Tuesday, the store sold $36,211.08 worth of goods.

Let X = Daily sales of goods

So, X ~ N( $\mu = 28,651.79, \sigma^{2} =1000^{2}$ )

The z-score probability distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ standard normal N(0,1)

Now, Tuesday,s Z-score is given by;

Z = $\frac{36,211.08-28,651.79}{1000}$ = 7.56

Yes, Tuesday was an unusually good day as on this day more worth of sales takes place as compared to the average daily sales of $28,651.79 .

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The radius of a circle is 3.5 inches. What is the area of the circle? Use pi = 3.14 3.5 sq.inches 21 sq.inches 35.45 sq.inches 3

Talja [164]

21 sq inches bc it just is i think :))

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