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charle [14.2K]
2 years ago
12

A man stands on a balcony 140 feet up and sees a bus stop at a 75 degree angle How far is the bus stop to the man in nearest fee

t

Mathematics
2 answers:
enyata [817]2 years ago
7 0

Answer:

145 feet  far is the bus stop to the man in nearest feet.

Step-by-step explanation:

Let the height of the balcony from the ground be h and the distance from the bus stop to the man be x.

As per the statement:

A man stands on a balcony 140 feet up and sees a bus stop at a 75 degree angle.

⇒ h = 140 feet and angle of depression= 75^{\circ}

We know that:

Angle of elevation(\theta) = Angle of depression = 75 degree

using the sine ratio we have;

\sin 75^{\circ} = \frac{140}{x}

⇒x = \frac{140}{\sin 75^{\circ}}

⇒x = \frac{140}{0.96592582628}

Simplify:

x = 144.938665 feet

Therefore, 145 feet  far is the bus stop to the man in nearest feet.

lakkis [162]2 years ago
4 0
D = 140 sec Θ models the distance from the man 
<span>to any object given his angle of sight theta. 
</span>after working it out you will find out that the awnser is <span>541 feet</span>
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The following curve passes through (3,1). Use the local linearization of the curve to find the approximate value of y at x=2.8.
Artist 52 [7]

d/dx (2 x^2 y + y = 2x + 13) 4xy + 2x^2 y' + y' = 2 4xy + y'(2x^2 + 1) = 2 y' = (2- 4xy)/(2x^2 +1)

<span>ow we can use this in a linear equation for a slope Ty = -5x/8 +5(3)/8 +8/8 = -5x/8 +(15+8)/8 = -5x/8 +23/8 this will gives us an approximation at x=2.8 now</span>

3 0
2 years ago
Read 2 more answers
A falcon flying 55 mph crosses a lake in 1 minute. How long would it take a hummingbird flying 45 mph to cross the same lake?
OverLord2011 [107]

Answer:

1 2/9 minutes

Step-by-step explanation:

55 mph

55 / 60 = 11/12

11/12 of a mile = 1 minute

45 mph

45 / 60 = 3/4

3/4 of a mile = 1 minute

11/12 divided by 3/4

11/12 * 4/3

We can cross-cancel

11/3 * 1/3 = 11/9 = 1 2/9

It takes 1 2/9 minutes for the hummingbird to cross the lake

Hope this helps!

(Please let me know if I did something wrong!)

7 0
2 years ago
Read 2 more answers
Pls explain your work!
mylen [45]

Answer:

find total volume to find what amount is 20%

hack, is put the 20% in alreadyy to find 20% volume

20%=1/5

so

vcone=1/3(hpir^2)

times thath by 1/5

vcone=1/15(hpir^2)

d/2=r

given

4.8=d

4.8/2=d/2=r=2.4

10=h

V=1/15(10pi2.4^2)

V=1/15(10pi5.76)

V=1/15(57.6pi)

V=3.84pi

V=12.0637 cubic inches=20% of vase

0.5 cubc inches per min

0.5 times t=12.0637

divide both sides by 0.5

t=24.1237

about 24 minutes

Step-by-step explanation:

6 0
2 years ago
Lorena calculated the slope of the linear function that is represented by the table of values as shown. x y –10 15 –8 27 –6 39 –
Anvisha [2.4K]

She made a mistake when she subtracted x1 from x2.

Step-by-step explanation:

Step 1 :

a)

The formula used by Lorena to calculate the slope between 2 points is correct

So the statement given in option 1 is not the reason for her mistake

Step 2:

b)

She has taken the fourth and fifth point and correctly used the x and y co ordinates to calculate the slope

Hence the statement in second option is not true

Step 3:

c)

While calculating the slope the denominator is -2 - (-4) . This gives 2 as the answer. But she has made a mistake in this subtraction giving -6 as the answer.

Hence she has made a mistake in subtracting x1 from x2 and this statement is true

Step 4:

d)

She has not made any mistake in subtracting y1 from y2. Hence this statement is not true

4 0
2 years ago
Read 2 more answers
Please, i need help :(
ollegr [7]

Answer:

First of all, find x from the Pythagorean theorem a^2+b^2=c^2, which c is the hypotenuse. 

7^2+24^2=c^2

49+576=c^2

c^2=625

c=25 or x=25

Next, we have to figure out the value of y and z. So, you need to use inverse trigonometric functions.

arctan(\frac{7}{24})=y=16.3 degrees. arctan(\frac{24}{7})=z=73.7 degrees.

All in all, the values are

x=25

y=16.3

z=73.7

Hope this helps and have a nice day!

7 0
2 years ago
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