Mathematics High School

the angle of a elevation of the top of a tree from an observer standing 10m away from the foot of the tree is 56°. Calculate the height of the tree.

Explain your answer pls,thx

Answers

Answer 1

Answer:

14.83 meters

Step-by-step explanation:

Given that :

Angle of elevation (α) = 56°

Distance between observer and foot of tree = 10 meter.

Height of tree =?

Using trigonometry :

The height (h) of the tree can be obtained using :

Tan α = opposite / Adjacent

Tan(56°) = h / 10

1.4825609 = h / 10

Multiply both sides by 10

1.4825609 * 10 = h

14.8256 = h

Hence, the height of the tree is 14.83 m(2 decimal places).

The Angle Of A Elevation Of The Top Of A Tree From An Observer Standing 10m Away From The Foot Of The

Related Questions

Original Equation: -5x + 2 = 5
First Step: --5x = 3

distributive property of multiplication over addition
subtraction property of equality associative property of addition
division property of equality​

Answers

Answer:

subtraction property of equality.

Step-by-step explanation:

the change made in the equation is that you subtracted 2 on both sides, which cancels out the 2 on the left and equals the 3 on the right. hope this helps :)

forgot to put photo but this is a repost HELP EMEBAHNDJFKG

Answers

Answer:

a

Step-by-step explanation:

Please solve and explain

Answers

Answer:

The value of x = 15

Hence,

AB = x = 15 inBC = 2x+1 = 2(15)+1 = 30+1 = 31 inAC = x-3 = 15 - 3 = 12 in

Step-by-step explanation:

We know that the perimeter of a triangle is the sum of all the sides of a triangle.

Given

Perimeter = 58 in

AB = x

BC = 2x+1

AC = x-3

so the equation becomes

Perimeter = AB + BC + AC

    58        = x + 2x+1 + x-3

     58        = 4x - 2

     4x  = 58+2

     4x = 60

     4x/4 = 60/4

      x = 15

Thus, the value of x = 15

Hence,

AB = x = 15 inBC = 2x+1 = 2(15)+1 = 30+1 = 31 inAC = x-3 = 15 - 3 = 12 in

VERIFICATION

Perimeter = AB + BC + AC

58 = 15+31+12

58 = 58

Determine the measure of the unknown angle in the triangle.

Answers

you add 78 plus 37 then subtract from 180

Answer:

65°

Step-by-step explanation:

Let the unknown angle be ∠ABC

∠ABC + 78° + 37° = 180° (angle sum property of a triangle)

∠ABC + 115° = 180°

∠ABC = 180° - 115°

∠ABC = 65°

∴the unknown angle in the triangle is 65°

I need help Fast!!!!

Answers

Answer:

option 3 i believe

Step-by-step explanation:

HELP ME OUT PLS!!!!!!!!

Answers

Answer:

C is better

Step-by-step explanation:

42mph is greater than 32mph

Answer:

the answer is b

Step-by-step explanation:

how many miles per gallon can the car get.

find a counter example for the following statement all triangles have one 90 degree angle

Answers

This is false because you can have obtuse triangles (25-25-130) and acute (60-60-60)

proportional constant

Answers

Answer:

The value of the proportionality constant (y to x) is: 3/10

Step-by-step explanation:

We know the slope of any graph where 'y' varies directly with 'x' gives us the constant of proportionality 'k'.

i.e. y = kx

and k = y/x

Given the points

(100, 30)(300, 90)(500, 150)

We know that the proportionality constant (y to x) is:

k = y/x

For the point (100, 30)

k = 30/100=3/10

For the point (300, 90)

k = 90/300=3/10

For the point (500, 150)

k = 150/500=3/10

As the value of proportionality constant (y to x) is the same.

i.e. k = 3/10

Thus, the value of the proportionality constant (y to x) is: 3/10

can someone please help me!!!!!! and don't steal meh points

Answers

Answer:

-6

Step-by-step explanation:

Please help! NEED FAST Will give brainliest

Answers

Answer:

25+3b/4

Step-by-step explanation:

9+7 because 9 is how many miles the first guy biked in 45 minutes and the 7 is how many miles apart they were in the first place.

9+7+9+3b/4

Step-by-step explanation:

The answer is 25+3b/4


Find the square root of the fraction 4/49.
A 2/7
B 7/2
C Cannot be done

Answers

Answer:

A

Step-by-step explanation:

2 times 2 = 4

7 times 7 = 49

2/7 = 4/49

Hope this helps!!!

ASAP HELP FOR BRAINLIEST!!!

A basketball player's goal was to score at least 275 points in the season. So
far, he has scored 212. If there is one game left, how many points must he
score to reach his goal? Be sure to include an inequality to represent this
scenario.

Answers

Answer:

63 more points

Step-by-step explanation:

275(goal) - 212(current points) = 63(points needed)

Check your work: 212+63=275

He needs to score 63 points

If a = –2 – 5i and b = –i, then find the value of the ab^3 in fully simplified form.

Answers

Answer:

5 + 2i

We were given the complex numbers;

a = - 2 - 5i

and

b = - i

We want to find the product;

ab^3                            ^ = Exponent

We substitute the complex numbers into the expression and simplify

( - 2 - 5i ) (i)^3                     ^ = Exponent            

This is rewritten as:

( - 2 - 5i) (i)^2     x  i                           ^ = Exponent

Note that

i^2 = - 1                                            ^ = Exponent

We substitute to obtain:

( - 2 - 5i )  x  - i                

Let us expand to get:  

- 2 x - i + 5i  x  - i

This simplifies to:

2i - 5i^2                           ^ = Exponent

This gives:

2i - 5 ( - 1 ) = 2i + 5

Hope This Helps

DOH! My Brian Hurts

The value of ab³ in simplified form is;  -250(i + 1).

What is an equation?

Equations are mathematical expressions that have two algebras on either side of an equal (=) sign. The expressions on the left and right are shown to be equal, demonstrating this relationship. L.H.S. = R.H.S. (left-hand side = right side) is a fundamental simple equation.

From the given values in the question we have;

a = -2 + 2i

b = -5i

Thus

ab³ = (-2 + 2i) × (-5 i)³

=  (-2 + 2i) (-125 i³)

=  (-2 + 2i) (-125 (-i))

=  (-2 + 2i) (+125 i)

= 125 i(-2) + 125 i(2i)

= -250 i + 250 i²

= -250 i -250 or,

ab³ = -250 (i+1)

To know more about equation:

brainly.com/question/10413253

#SPJ2

Please help me soon thxs

Answers

Answer: Vertical angles

Step-by-step explanation:

Answer:

Vertical Angles

Step-by-step explanation:

Vertical angles are "any opposite pairs of angles made by intersecting lines."

Also, if 2 angles are vertical, they are also congruent.

The side of a cube is increasing at a rate of 2 kilometers per hour. At a certain instant, the side is 1.5. What is the rate of change of the volume of the cube at that instant (in cubic kilometers per hour)?

Answers

Answer:

dV/dt = 13,5 [Km³/h]

Step-by-step explanation:

The volume f the cube is:

V = x³                 where x is a side of the cube, then tacking derivatives with respect to  time on both sides of the equation

dV/dt = 3*x² dx/dt

dx/dt = 2 km/h

at the time when the side x =  1,5 Km

dV/dt = 3* (1,5)²*2   [km³/h]

dV/dt = 13,5 [Km³/h]

A map key shows that a map distance of 1/3 inch represents an actual
distance of 4/7 mile. Find the actual distance represented by 1 inch on the
map."

Answers

Answer: 12/7 or 1 5/7 of a mile

Step-by-step explanation: To get to 1 mile, you multiply 1/3 by 3. Then multiply 4/7 by 3. That should give you your answer. Hope this helped!

please help I'll give brainliest​

Answers

Answer:

y + 1 = 4(x - 2)

y = 4x + 11

8x - 2y = 6

Step-by-step explanation:

Following equations are parallel to the graph 4x - y = 6, because their slopes are equal (4).

y + 1 = 4(x - 2)

y = 4x + 11

8x - 2y = 6

Emily's car broke down the weekend before she started a new job. She borrowed $880 from her parents, at an annual interest rate of 3%, to quickly pay for the car repairs. If Emily paid her parents a total of $893.20 in six months, how much simple interest did she pay?

Answers

Answer:

$13.2

Step-by-step explanation:

Step one:

given data

principal=$880

rate= 3%

final amount = $893.2

time t= 6 months =0.5 years

Step two:

Required

Simple interest

SI=PRT/100

SI=880*3*0.5/100

SI=1320/100

SI=13.2

She paid Simple interest of $13.2

Heather rode her bike at a rate of 15 feet per second. Which graph best represents the relationship between the time in seconds Heather rode her bike, x, and the distance in feet she rode, y?​

Answers

the graph that goes up the most

Answer: D

Step-by-step explanation:

Because it said she rode her bike 15 feet per second and per means 1 so for every second she rode 15 distance(feet)

I Hope This helped :)

See the attached photo

Answers

It is (4,0) ............………………

Answer: D

Step-by-step explanation:

X is 0 so it would be intercepting the graph at -2

Please help. If this isn't done by today i'm grounded :(

A _____ magnet can be made by rubbing a permanent magnet the same way
along an item. The alignment of atoms does not last long.
permanent
temporary
atomic
polar

Answers

Answer:

B. temporary

Step-by-step explanation:

The last sentence says that the alignment of atoms does not last long.

Answer:

B. temporary

 

Step-by-step explanation:

From a graph, how do you identify the solution of a system of equations?

Answers

Answer: Wherever the all graphs of the equations intersect, or cross each other, that is a solution to the system of equations.

Step-by-step explanation:

Say something stupis if you want a brainlest answer.

Answers

Answer:

something stupis if you want a brainlest answer.

l o l

s t  u p i d enough for ya X D

ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha

the area of the retangler piece of foil is 11 1/4 square inches its length is 4 1/2 inches what is the width of the foil?

Answers

Answer:

The width of the foil = w = 2.5 inches

Step-by-step explanation:

We know that the Area of a rectangular piece:

[tex]A=wl[/tex]

Here:

'w' is the width 'l' is the length

Given that area of the rectangular piece of foil:

Area = A = 11 1/4 square inches

               = 45/4 square inches

               = 11.25 square inches  

                                                                         

Length = l = 4 1/2 inches

                 = 9/2 inches

                 = 4.5 inches

Using the Area formula

[tex]A=wl[/tex]

[tex]w\:=\:\frac{A}{l}[/tex]

    [tex]=\frac{11.25}{4.5}[/tex]

    [tex]= 2.5[/tex] inches

Thus, the width of the foil = w = 2.5 inches

Answer:

Step-by-step explanation:

I think it would be 5

A 30-foot electric line is suspended between the tops of two 20-foot electric poles on ground level. The lowest point of the line is 5 feet above the ground. What is the distance between the two electric poles?

Answers

Answer:

The appropriate response will be "Zero (0)". A further explanation is given below.

Step-by-step explanation:

This does not make any logical sense, it seems to be 15 feet from either the peak including its poles to something like the edge of that same wire, therefore half including its 30 would be 15 feet. This always implies that perhaps there is no space seen between points, the poles must've been interacting or overlapping.

The response is therefore "0".

You created a Gingerbread house out of the same dough. Each side of the house is a 4 x 6 rectangle. How much Gingerbread dough would you need to create the entire house including the floor? Hint: find the surface area.

Answers

Answer:144

Step-by-step explanation:

4x6x6=144

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Answers

Answer:

you are asking what dont understand

Step-by-step explanation:

I have another question:
If triangle GFE~ to triangle ABC, Find FG.

Answers

Answer:

45

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

If u are at a store and the original price of a product is $28.95 and the sales tax is %6.5 what is the final price

Answers

Answer:

$30.83

Step-by-step explanation:

Before Tax Price: $28.95

Sale Tax: 6.50% or $1.88

After Tax Price: $30.83

Hope this helped :)

Answer:

$30.83

Step-by-step explanation:

1. Circle the largest number.
|- 45 and 6

Answers

Answer:

6 is larger unless -45 is in brackets then its bigger

Step-by-step explanation:

No negative number is bigger than positive numbers, unless it has brackets

Answer:

-45

Step-by-step explanation:

The negative is in brackets making it positive and 45 is greater than 6

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