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qwelly [4]
3 years ago
5

PLEASE HELP WiLL MAKE BRAINLIEST> A bird sits on top of a lampost. The angle of depression from the bird to the feet of an ob

server standing away from the lampost at 35 degrees. The distance from the bird to the observer is 25 meters. How tall is the lampost? Draw a diagram, label it, and show how to find this value.

Mathematics
1 answer:
Lisa [10]3 years ago
4 0

See the attached picture:

You might be interested in
6+8x2=5x<br><br> A. –2<br><br> B. –1<br><br> C. 1/3<br><br> D. \(3\)
VMariaS [17]
From order of operations, we do multiply/divide first, then add/subtract. So:
(I assume that is 8 times 2, and 5 times x, solving for x)

6+8<span>⋅</span>2 = 5x
6 + 16 = 5x
22 = 5x
x = 22/5 (twenty two fifths)
3 0
3 years ago
Kayla brought 80 packs of cat food to feed the cats outside.
Akimi4 [234]

Answer:

It's 24 packs of cat food

Step-by-step explanation:

You have to think of it as 30% of 80.

30      ?

----- = ----

100    80

Now you have to find out what is in the blank by doing 80 times 30 to find what that equals. That equals 2,400. Now you have to find what times a 100 gets you 2,400. You divide a 100 by 2,400 to get 24. There's your answer

5 0
3 years ago
Read 2 more answers
If you borrow $100 at 50% interest, how much interest do you think you will have to pay?
Elena L [17]

Answer:

the answer is 50 dollars

Step-by-step explanation:

because your interest is only 50% so whats 100 divided into 2 its 50

6 0
3 years ago
Read 2 more answers
Find the height of the building to the nearest foot in the diagram below. Show work.
stira [4]

Answer:

height : 150 feet

Step-by-step explanation:

\sf \sf tan(x)= \dfrac{opposite}{adjacent}

using tan rule:

\hookrightarrow \sf tan(62)= \dfrac{b}{80}

\hookrightarrow \sf b = tan(62)*80

\hookrightarrow \sf b =150.46 \ feet

5 0
2 years ago
Read 2 more answers
Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical fact
scZoUnD [109]

Answer:

Explained below.

Step-by-step explanation:

The claim made by an expert is that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)².

(1)

The hypothesis for both the test can be defined as:

<em>H</em>₀: The variance of speeds does not exceeds 75 (mph)², i.e. <em>σ</em>² ≤ 75.

<em>Hₐ</em>: The variance of speeds exceeds 75 (mph)², i.e. <em>σ</em>² > 75.

(2)

A Chi-square test will be used to perform the test.

The significance level of the test is, <em>α</em> = 0.05.

The degrees of freedom of the test is,

df = n - 1 = 55 - 1 = 54

Compute the critical value as follows:

\chi^{2}_{\alpha, (n-1)}=\chi^{2}_{0.05, 54}=72.153

Decision rule:

If the test statistic value is more than the critical value then the null hypothesis will be rejected and vice-versa.

(3)

Compute the test statistic as follows:

\chi^{2}=\frac{(n-1)\times s^{2}}{\sigma^{2}}

    =\frac{(55-1)\times 94.7}{75}\\\\=68.184

The test statistic value is, 68.184.

Decision:

cal.\chi^{2}=68.184

The null hypothesis will not be rejected at 5% level of significance.

Conclusion:

The variance of speeds does not exceeds 75 (mph)². Thus, concluding that driving conditions are not dangerous on this highway.

7 0
3 years ago
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