Answer:
21 feet
Step-by-step explanation:
Given :
Height of the tripod above the ground = 5 ft
Elevation = 8°
Distance of the tree from the tripod = 120 ft
Therefore from the figure, we can find the height of the tress as:
[tex]$\tan 8 ^\circ = \frac{BC}{AB}$[/tex]
[tex]$0.1405 = \frac{BC}{120}$[/tex]
∴ BC ≈ 16
Therefore, CE = BC+BE
= 16 + 5
= 21
Therefore the height of the tree is 21 feet.
The tree is 21.87 ft tall.
Kirsten's distance from the tree, D, the height of the tripod above the ground h and the line of sight of the top of the tree from the tripod form a right-angled triangle with hypotenuse side, Kirsten's line of sight, opposite side, height of the tripod above the ground and adjacent side, Kirsten's distance from the tree.
Since the angle of elevation above the horizontal of the top of the tree is 8°, we have that
tan8° = h/D
h = Dtan8°
Since D = 120 ft,
h = Dtan8°
h = 120tan8°
h = 120 × 0.1405
h = 16.87 ft
Since the tripod is 5 ft above the ground and the top of the tree is h = 16.87 ft above the top of the tripod, the height of the tree H = 5 + h
= 5 ft + 16.87 ft
= 21.87 ft
So, the tree is 21.87 ft tall.
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Help ASAP 15 points
a) What is the length of the side of the small square? Do NOT put units in your answer and round to the tenths.
b) What is the area of the small square? Do NOT put units in your answer and round to the tenths.
Answer:
Step-by-step explanation:
a) Let's [tex]x[/tex] the length of the side of the small square.
Thus,
[tex]x^{2} + (\sqrt{40})^2 = (\sqrt{50})^2[/tex]
[tex]x^{2} + 40 = 50[/tex]
[tex]x^{2} = 50 - 40[/tex]
[tex]x^{2} = 10[/tex]
[tex]x = \sqrt{10}[/tex]
[tex]x=3.16[/tex]
b) Now, the area of the small square is
[tex]A= x^{2}[/tex]
[tex]A=(3.16)^2[/tex]
[tex]A=9.99[/tex]
3.
Choose an appropriate metric unit for the length of a pencil.
A. milliliter
B. liter
C. milligram
D. centimeter
Answer:
D
Step-by-step explanation:
because the liter things measure liquids and the gram one measures mass
Answer:
centimeter (cm)
Step-by-step explanation:
centimeters are the only measurement out of the answer choices that measures length. Milligrams are a measure of weight, and liters and milliliters both measure volume of a liquid.
Mathematics Question!
Mika estimated the sum of 189.27, 15.8, and 11.2 by rounding each number to the nearest whole.
What was Mika’s estimate and what is the actual sum of the numbers?
Enter your answers in the boxes
Mika estimated the sum to be blank. The actual sum is blank
PLEASE DON’T ANSWER IF YOU DON’T NO THE ANSWER!
Answer:
Mika's estimated the sum to be 216. The actual sum is 216.27
Step-by-step explanation:
Mika:
189.27 = 189
15.8 = 16
11.2 = 11
189 + 16 + 11 = 216
Actual:
189.27 + 15.8 + 11.2 = 216.27
Please help!
A person invests 10000 dollars in a bank. The bank pays 4.5% interest compounded
daily. To the nearest tenth of a year, how long must the person leave the money in
the bank until it reaches 17600 dollars?
Answer: 12.6 years
Step-by-step explanation:
What is the area of the triangle need help!!
Answer:
40 square units
Step-by-step explanation:
Area of triangle = 1/2×b×h
= 1/2×10×8
= 40 square units
Read carefully and choose the name of the student who made the correct statement.... ahhh help
Kenya is solving the equation 5 3/4 - 1/6x = 4 1/2. She gets to 1 1/4 = 1/6x. Is this a valid way to solve the equation? answer asap please
Answer:
15/2
Step-by-step explanation:
5 3/4 - 1/6x = 4 1/2
move the variable to it's own side.
5 3/4 - 4 1/2 = 1/6x
change the subtracting side to have common denominators
5 3/4 - 4 2/4 = 1/6x
1 1/4 = 1/6 x
divide both sides by 1/6, same thing as multiplying both sides by 6 (reciprocal)
30/4 = x
reduce: 15/2 = x
The value of x should be 15/2.
Calculation of the value of x:Since
5 3/4 - 1/6x = 4 1/2
So, it can be like
5 3/4 - 4 1/2 = 1/6x
Now
5 3/4 - 4 2/4 = 1/6x
1 1/4 = 1/6 x
Now we have to divide both sides by 1/6
So,
30/4 = x
x = 15/2
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that is
[tex]2x + 2x[/tex]
Answer:
2x + 2x = 4x
Step-by-step explanation:
help plz- these were given to me and i was told i could only get help on two-
Simon has a certain length of fencing to enclose a rectangular area. The function AAA models the rectangle's area (in square meters) as a function of its width (in meters).
Which of these statements are true?
Choose all answers that apply:
Choose all answers that apply:
(Choice A)
A
Greater width always relates to smaller area.
(Choice B)
B
Greater width relates to smaller area as long as the width is less than 10\text{ m}10 m10, start text, space, m, end text.
(Choice C)
C
When there is no width, the area is 20\text{ m}^220 m
2
20, start text, space, m, end text, squared.
(Choice D)
D
When there is no width, the area is 0\text{ m}^20 m
2
0, start text, space, m, end text, squared.
Answer:
When there is no width, the area is 0m²
Step-by-step explanation:
Expressing the area of a rectangle as a function of its width:
Area of a rectangle = Length * width
Since the area of rectangle is related to the width by the multiplication operatkr. We can conclude from the options given that ; if the value of width = 0 ; the the area of rectangular plot = 0
When x :
Area = Length * width
Area = Length * 0
Area = 0
Area = Length * 0
Aea = 0
Which statements are true regarding the 270° rotation
shown? Check all that apply.
O The sides that were parallel in the pre-image are
parallel in the image.
The angle measures of ABCD are equal to the
corresponding angle measures of A'B'C'D'.
Side AB is longer than side A'B'.
The segments connecting the center rotation to
the corresponding vertices create a 270° angle.
The image has no perpendicular sides.
Answer:
1,2, and 4 are the correct answers
Step-by-step explanation:
Answer:
1. The sides that were parallel in the pre-image are parallel in the image.
2. The angle measures of ABCD are equal to the corresponding angle measures of A’B’C’D’.
4. The segments connecting the center of rotation to the corresponding vertices create a 270° angle.
Step-by-step explanation:
Edge 2021
Use at least 8 oz. of coffee. On a Number line
what is the solution of
2x-5=3
Can someone please help me with this?
9514 1404 393
Answer:
1.411.99Step-by-step explanation:
The Pythagorean theorem (see Hint) tells you the length of the hypotenuse (c) is ...
c² = 1² + 1² = 2
c = √2 ≈ 1.4142136 . . . units
The estimated value of the length of the hypotenuse is 1.41 units.
__
Of course the shaded square will have an area that is the square of that value:
area = s² ≈ 1.41² ≈ 1.99 . . . . . rounded to hundredths
The estimated area of the square is 1.99 square units.
__
Additional comment
Of course, we don't have to estimate. We can use the exact value of the side length to determine the shaded square has an area of ...
area = s² = (√2)² = 2 . . . . exactly
We can also get there by recognizing that the lengths of 1 represent half the length of each of the diagonals of the square. That is, the square's diagonals are both of length 2. The area is half their product, so is (1/2)(2·2) = 2 square units.
help!! help!! help!! help!! help!! help!! help!! help!! help!! USING THE ELIMINATION METHOD SOLVE THESE PLEASEE HELPPPO!!!!!
Answer:
a = 15, b = -14
Step-by-step explanation:
From the question,
a/5 - b/2 = 10
Multiply all through by 10
(a/5)10 - (b/2)10 = 10×10
2a - 5b = 100...................... Equation 1
a - b = 29 ........................ Equation 2
Solving equation(1 ) and equation (2) simultaneously
using elimination method,
multiply equation (2) by 2.
2a - 2b = 58.................... Equation 3
Substract equation 3 from equation 1
2a - 2a -5b-(-2b) = 100-58
0 - 5b+2b = 42
-3b = 42
b = 42/-3
b = -14.
Substitute the value of b into equation 2
a - (-14) = 29
a +14 = 29
collect like terms
a = 29-14
a = 15.
Hence, a = 15, b =-14
Ben made a model (shown below) of the square pyramid he plans to build when he grows up. Find the surface area of the model.
Answer:
The answer is "[tex]240 \ m^2[/tex]"
Step-by-step explanation:
please find the given diagram image file in the attachment.
In this question, the surface area model includes two things that are square pyramid is equal to the area of the square base and the area of the flour lateral triangle:
[tex]SA= 10\times 10 +4 (\frac{1}{2}\times (10) \times (7))\\\\[/tex]
[tex]= 100 +4 (\frac{1}{2} \times 70)\\\\= 100 +4 (35)\\\\= 100 +140\\\\=240 \m^2\\\\[/tex]
The surface area of the model is [tex]240 \ m^2[/tex].
The graph of which function is the same as the graph of y=1/x shifted to the right 5 units and shifted up 2 units?
y = 1/x+5 + 2
y = 1/x-2 + 2
y = 1/x+5 - 2
y= 1/x-5 - 2
Answer: I’m pretty sure it’s y=1/x+5 +2
Step-by-step explanation:
The graph of Function [tex]y = \frac{1}{x-5}+2[/tex] is same as the graph of [tex]y = \frac{1}{x}[/tex]
What is a graph?"A graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner."
What is a function?"Function, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable)."
We have
[tex]y = \frac{1}{x}[/tex]
The function is shifted 5 units right
⇒[tex]y = \frac{1}{x-5}[/tex]
The function is shifted 2 units up
⇒[tex]y = \frac{1}{x-5}+2[/tex]
Hence, function becomes [tex]y = \frac{1}{x-5}+2[/tex]
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Nine-hundred seven tickets were sold for a concert. Seven hundred eighty-nine people attended the concert
Part A: Write an equation for p, the number of people that bought tickets but did not attend.
Part B: How many people bought tickets but did not attend?
Answer:
A: 907-789=p
B: 118 bought tickets but didn't go.
Step-by-step explanation:
907 is the people that bought the tickets, you subtract the people that did go which is 789 which would give you the people that didn't go but still bought tickets.
0.3z=0.009 please find the value
Answer:
z = 0.03
Step-by-step explanation:
0.3 z ÷ 0.3 = 0.009 ÷ 0.3
z = 0.009 ÷ 0.3
alterinate form z 3/100, z = 3 x 10^-2
find the missing term for me plz nd thx
Answer:
6x
Step-by-step explanation:
3*2x=6x
Sasha carries a balance on her credit card each month. In May, she decides she wants to use her card to buy a new dishwasher. Which part of the billing cycle should she make her purchase to keep her finance charges to the minimum.
Answer:
her
Step-by-step explanation:
PLEASE HELPP!! PLEASEE
Answer:
The rate of change is -300 meters per minute
Step-by-step explanation:
Here, we want to get the rate of change for the given situation
Firstly, we will need to collate the points
Let us have the points as:
(time, height)
The points are;
(10,4500) and (15,3000)
The formula for the slope m representing the average rate of change is;
m = (y2-y1)/(x2-x1)
m = (3000-4500)/(15-10) = -1500/5 = -300 meters/minutes
Mark is installing a mosaic tile backsplash and the shape of the tiles are shaped like regular octagons. Each tile has a length from side to side of 6 in. Once Mark gets a few pieces on the wall, he realized that there is a gap that the tiles do not cover. What size tile must he get to fill the gaps?
Answer:
square with sides of 6 in
Step-by-step explanation:
Tessellation is the arrangement of shapes in repeated patterns without gaps or overlapping.
Tessellation is usually done with regular polygons. Only three regular shapes can tessellate, these are equilateral triangle, regular square and regular hexagon. For other polygon to tessellate, more than one shape must be used. A octagon can be used to make tessellations if it is used together with a square.
Mark uses tiles with shape of octagon of sides 6 in. To fill the gaps, Mark have to uses a square with sides of 6 in
How many solutions can be found for the equation 5x + 3(x - 1) = 10x - 2x - 3?
None
One
Two
Infinitely many
Answer:
Infinitely many
Step-by-step explanation:
Equation: 5x + 3(x - 1) = 10x - 2x - 3
1) 5x + 3x - 3 = 10x - 2x - 3
2) 8x - 3 = 8x - 3
3) 8x = 8x
4) x = x
Based on this information, it seems that the best answer would be infinitely many solutions.
What is 77 .35 divided by 3.5
Answer:
22.1
Step-by-step explanation:
77.35÷3.5=22.1
Have a wonderful day!
If using the method of completing the square to solve the quadratic equation x2 - 6x – 7 = 0, which number would have to be added to "complete the square"?
Answer:
(-3)^2
Step-by-step explanation:
You add 7 on both sides, giving you x^2 - 6x = 7
Then, take half of b, and square it. Giving you x^2 - 6x +(-3)^2 = 7
The answer will be (-3)^2 for this question, but this is not the full solution.
Hope this helped. Good luck on the rest!
How do you do 4 divided by 0.8 in place value
Answer:
5
Step-by-step explanation:
because that is the correct answer
4 divided by 0.8 is equal to 5.
To divide 4 by 0.8 using place value, you can follow these way
Convert the decimal divisor, 0.8, into a whole number by multiplying both the tip and the divisor by a power of 10.
Since there's only one decimal place in0.8, you can multiply both figures by 10 to exclude the decimal
0.4 x 10 = 40( multiplying the tip by 10)
0.8 x 10 = 8( multiplying the divisor by 10)
Now we've the division problem as 40 divided by 8.
Divide the converted tip by the converted divisor
= 40 ÷ 8
= 5
Thus, 4 divided by 0.8 is equal to 5.
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I need help with this problem please as quickly as possible please and thank you to the person that can help me
Answer:
6x - 2 - 3x + 4
I think that would be it. I just multiplyed 2 by 3 and then 2 by - 1.
Edit:
The true answer would be 3x+2
Which ratio is equivalent to 3:18?
A 6:21
B 5:20
( 7:42
D 12:2
The ratio is equivalent to 3:18 is 7:42.
What is Ratio?A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.
Given:
Ratio = 3:18
= 1: 6
1. 6:21
= 3:7
2. 5:20
= 1:4
3. 7:42
= 1:6
4. 12:2
= 6:1
Hence, the ratio is equivalent to 3:18 is 7:42.
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please help!! i'll give brainliest and 5 stars
Answer:
I believe its G. 2x<8
Step-by-step explanation:
An open circle means that it is only less than OR more than, and since the arrow is pointing towards the left, it means that it is less than 8. I really hope this helps!