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Lana71 [14]
3 years ago
5

Find the angle of elevation of the sun when a 7.6-meter flagpole casts an 18.2-meter shadow. Round to the

Mathematics
1 answer:
Gnoma [55]3 years ago
7 0

Answer:22.7

Step-by-step explanation:

Okay so the situation given shows a right triangle with the two sides being 7.6 and 18.2. So we can find the angle of elevation using tangent, which is tan-1*7.6/18.2. I got 22.66 so 22.7

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Given the picture, what is the length of AC? A) 4.5 B) 5 C) 7.5 D) 8
drek231 [11]

we know that

triangles BCD and ACE are similar

so, their ratios of sides must be equal

Calculation of y:

\frac{BC}{AC}=\frac{CD}{CE}

we can see that

AC=AB+BC

AC=y+3

CE=CD+DE

CE=4+6

CE=10

now, we can plug values

\frac{3}{y+3}=\frac{4}{10}

now, we can solve for y

3*10=4*(y+3)

30=4y+12

30-12=4y+12-12

18=4y

y=4.5

Calculation of AC:

we know that

AC=y+3

we can plug y

and we get

AC=4.5+3

AC=7.5...................Answer


7 0
3 years ago
What is the slope of the line passes through the pair of points (-4.1,7.4), (4.3,3.2)
Paladinen [302]
Hi there! The formula for finding the slope is y2 - y1/ x2 - x1. This means you subtract the first x and y-coordinates form the second x and y-coordinates. (-4.1, 7.4) is the first coordinate and (4.3, 3.2) is the second coordiante. Set it up like this:

3.2 - 7.4 / 4.3 - (-4.1)

Now, let's subtract. 3.2 - 7.4 is -4.2. 4.3 - (-4.1) is 9.4. -4.2/9.4 is -0.5 when simplified. There. The slope of the line is -0.5. The answer is C: -0.5.

Note: When you subtract a negative number, you're actually adding. So if an expression is 2 - (-3), the answer is 5, because you add 3 into 2.
3 0
3 years ago
Ivanhoe Company is considering buying a new farm that it plans to operate for 10 years. The farm will require an initial investm
Ludmilka [50]

The  NPV of this investment if the discount rate is 10 percent is: 1.58%.

<h3>Net present value (NPV)</h3>

Year Cash flow  PVIF 10%  Present value

0         ($11.86)     1.000           ($11.86)

1           1.90          0.909           $1.73

2          1.90          0.826           $1.57

3          1.90           0.751           $1.43

4          1.90           0.683          $1.30

5          1.90           0.621           $1.18

6          1.90           0.564          $1.07

7          1.90            0.513          $0.98

8          1.90           0.467          $0.89

9          1.90           0.424          $0.81

10         6.45          0.386         $2.49

NPV                                          $1.58

1.9+5.25-2×35%=6.45

Hence, the NPV is $1.58.

Learn more about NPV here:brainly.com/question/17185385

#SPJ1

3 0
2 years ago
Is 3.61 less than 3.87
My name is Ann [436]

Step-by-step explanation:

yes because 61 is less than 87

5 0
3 years ago
A number cube has sides that are labeled 1 to 6. Jamal rolls the number cube. What is the probability that he will roll a 22?
Tems11 [23]

-- The probability of rolling a 22 is zero.  That result is impossible, because the sides are labeled with single digits 1 through 6 .  Since 22 is not printed anywhere on the cube, it can never come up.

-- The probability of rolling a<em> 2</em> , however, is <em> 1/6</em> . <em>(B)</em>

<em></em>

The -probability of rolling something you want is always

<em>(the number of different possible results that you like) </em>

divided by

<em>(the total number of different possible results)</em>

4 0
3 years ago
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