Answer:
the angle of elevation of a cloud from a point 60m above a lake is 30 and the angle of depression of the reflection of the cloud in the lake is 60 - Mathematics ... the reflection of the cloud in the lake is 60* find the height of the cloud from the surface of the lake
Step-by-step explanation:
Hope this helps
Answer:
80 mStep-by-step explanation:
The described points form two right triangles which share same horizontal leg a.
The bottom triangle has 60 m vertical length and 60° opposite angle.
The triangle on the top has unknown (x) vertical length and 30° opposite angle.
We are looking for the distance x + 60 m
On the top triangle we have:
tan 30° = x/a ⇒ a = tan 30° / xOn the bottom triangle we have:
tan 60° = 60/a ⇒ a = tan 60° / 60Comparing we get:
tan 30° / x = tan 60° / 60 x = 60 tan 30° / tan 60°x = 20 mSo the distance is:
60 m + 20 m = 80 mCan u help me with my math
Answer:
B=310 because..well just do the math.
Step-by-step explanation:
3(-5)(-1)(-2) evaluate please thank you :D
Answer:
-30
Step-by-step explanation:
Answer:
the answer is -30
Step-by-step explanation:
this just means to multiple from left to right
The formula s=√A4.828 can be used to approximate the side length s of a regular octagon with area A. A stop sign is shaped like a regular octagon with a side length of 12.4 inches. To the nearest square inch, what is the area of the stop sign?
inches²
Answer:742
Step-by-step explanation:
PLZ HELP DUE IN 30 minutes
For the cube first we find the surface on one side which is 3x3=9ft^2
we have 6 sides 9x6=54ft^2
For the pyramid first we find the surface of the base which is 15x15=225in^2
next we find the surface of the sides which is 7*15/2=52.5in^2 52.5*4=210in^2
210+225=435in^2
Answer:
435 inches for pyramid 54ft for cube
Step-by-step explanation:
52.5 x 4=210
15 x 15 = 225
cube 3 x 3 ft equals 9 feet repeat for all 6 faces u get 54ft
In September, Shalee had some money in her bank account. In October she earned $48.24 and put it in her account. In November she spent three-fourths of the money in her bank account on a dress. If she spent $68.28 on the dress, how much money did she have in her account in September?
Answer:
x = $42.8
Step-by-step explanation:
Let
Amount of money shalee has in Sept = $x
Shalee October earnings = $48.24
Total money = $x + $48.24
She spent 3/4 of the money on dress
3/4 of (x + 48.24) = $68.28
3/4 * x + 48.24 = 68.28
3/4x + 144.72/4 = 68.28
3/4x + 36.18 = 68.28
3/4x = 68.28 - 36.18
3/4x = 32.10
x = 32.10 ÷ 3/4
= 32.10 × 4/3
= 128.4/3
= 42.8
x = $42.8
Please help me brainlessly
20 point question
simplify: −3x+2x-2y-5x+y+7y
Answer:
6y - 6x
I hope this helps!
Step-by-step explanation:
1. Find the like terms
-3x, 2x, -5x,
-2y, y, 7y
2. combine the like terms
-6x+6y
There are 10 fruits in a basket and 5 of them are apples. Write the ratio in simplest form.
Answer:
10:5= 2:1
Step-by-step explanation:
Hope this helped!! Give brainliest..
Answer:
If the ratio is 10:5 your answer would be 2:1
Step-by-step explanation:
Which point in the coordinate plane represents the number 7+5i in the complex plane?
Answer:
Pythagoras:
ρ
=
√
7
2
+
(
−
5
)
2
=
√
49
+
25
=
8.6
a pound of rice crackers cost 2.88 nathan purchased 1/3 pound of crackers how much did he pay for the crackers
Answer:
0.96
Step-by-step explanation:
Answer:
If you're asking how much it would cost then
Nathan purchased 1/3 pounds of crackers for 0.96$
Step-by-step explanation:
5, 12, and 13 is it a right triangle
Answer:
yeah
Step-by-step explanation:
Answer:
no
Step-by-step explanation:
Not an emergency question, but it’s kinda important.
Which one is greater 4% or 0.001%
Answer:
4%
Step-by-step explanation:
dude if you got a whole number and a decimal, the whole number is going to be greater (as long as it isn't negative)
Find the slope of the line.
On a coordinate plane, a line goes through (negative 1, 0) and (negative 1, 1).
a.
Undefined
c.
Three-halves
b.
0
d.
-1
Greetings.
A line goes through (-1,0) and (-1,1).
~ Theory ~
If both x-term for both ordered pairs have same value. The slope for line graph is undefined.
~ Proof ~
Using Rise/Run
[tex]m = \frac{1 - 0}{ - 1 - ( - 1)} \\ m = \frac{1}{ - 1 + 1} \\ m = \frac{1}{0} [/tex]
Because the denominator is 0, therefore, the slope is undefined.
Because from rise/run. We put the x-term to subtract another x-term. And if both x-terms have same value. It will give the run/denominator = 0.
Therefore the answer is a. Undefined
Answer:
I think the answer would be letter a
Step-by-step explanation:
Have a great day, hope I helped
Carlton bought stock at $5.25 for each share. The price of the stock decreased $3.75 after one month. It then increased $1.85 and $2.25 over the next two months. What is the price of the stock now?
Answer:
The price of the stock is now $5.60
Step-by-step explanation:
$5.25 - $3.75 = $1.50
$1.50 + $1.85 + $2.25 = $5.60
Answer:
They have $4.10
Step-by-step explanation:
Take out all the other stuff my 1.85 and 2.25 because all that other stuff doesn't matter now just add $1.85 + $2.25
1 1
+ 1.85
2.25
-------------
$4.10
Evaluate the expression when a= 3 and b = 43.
b-5a
Answer:
28
Step-by-step explanation:
im stressing and im losing points. i need help please
Answer:
I think it is X or Y. I might be wrong.
Answer:
∠Y = 85° , side XZ
Step-by-step explanation:
180 = 5x - 1 + 8x + 5 + 4x + 6
180 + 1 - 5 - 6 = 5x + 8x + 4x
170 = 17x
x = 170 / 17
x = 10
∠X = 5(10) - 1 = 49°
∠Y = 8(10) + 5 = 85°
∠Z = 4(10) + 6 = 46°
therefore, the longest side of a triangle is the opposite site of
∠Y = 85° , side XZ
Jenny earned 110 of a possible 148 points on a test. She lost 2 points for each incorrect answer. How many incorrect answers did she have?
Answer: She had 19 incorrect answers
Step-by-step explanation:
n = number of incorrect answers at 4 points per answer
110 = 148 - 2n
Solve for n
n = (148 - 110)/2 = 19
URGENT! TIMED QUESTION, WILL GIVE BRAINLIEST!
The height of a punted football is modeled by the following quadratic function:
h(t) - -5t2 . 40
where the height is measured in meters after t seconds.
+
a. How many seconds will it take the ball to hit the ground?
c. What is the maximum height of the ball?
Answer:
Step-by-step explanation:
Part a
When the ball hits the ground it has covered the height of zero meters so we replace h(t) with zero
[tex]h(t)=-5t^2+40t\\0=-5t^2+40t\\40t-5t^2=0\\5t(8-t)=0\\5t=0 \ \ \ , \ \ \ 8-t=0\\t=0 \ \ \ , \ \ \ t=8\\[/tex]
So it will take 8 seconds for the ball to hit the ground we another value
t = 0 seconds is when the ball was thrown and after 8 seconds the balls hits the ground
Part c
The ball reaches its maximum height when the velocity is zero.
So as this functions represents the displacement of the ball h(t) we differentiate it to get the velocity equation, so we differentiate h(t) with respect to t.
[tex]v=-10t+40[/tex]
so now we replace the velocity which is v with a zero because the ball reaches its maximum height when the velocity is zero.
[tex]0=-10t+40\\10t=40\\t=40/10\\t=4[/tex]
so now we insert the value of t = 4 into the equation of h(t) to get the height.
[tex]h(t)=-5t^2+40t\\h(4)=-5(4)^2+40(4)\\h(4)=-80+160\\h(4)=80\\[/tex]
so the maximum height of the ball is 80 meters.
Part d
The y-intercept of the graph is zero, and it represents that there is no initial height covered by the ball or the ball is actually thrown from already a height of x meters, as we can see from the equation the y-intercept is zero which means the height covered by the ball is 0 meters when time is zero.
So the point is actually at the Origin (0 , 0).
Part e
We can see that the origin (0 ,0) and (8,0) are the x-intercepts of the graph as solved from part A
We can see that the stationary point or the maximum point is at (4,80) which means the maximum height of the ball is 80 meters when the time is 4 seconds as solved in part C
Graph attached.
help
ques starts frm a rectangular garden
Answer:
this is the full solution of your question
what is 2% = in simplest form
Answer:
1/50
Step-by-step explanation:
Hope this helped have a nice day!
What are the solutions to the quadratic equation 5x2 – 8= –12x?
djjdjdjeiwiwueuwhhww
Given the points P(2, –6) and R(8, 3), what is the component form of Vector P R?
⟨6, -3⟩
⟨10, -3⟩
⟨6, 9⟩
⟨10, 9⟩
Answer:
C
Step-by-step explanation:
The component form of vector PR is ⟨6, 9⟩.
How to determine the component form of vector PRTo find the component form of vector PR, we need to subtract the coordinates of point P from the coordinates of point R.
The x-component of the vector is obtained by subtracting the x-coordinate of point P from the x-coordinate of point R:
x-component = 8 - 2 = 6
The y-component of the vector is obtained by subtracting the y-coordinate of point P from the y-coordinate of point R:
y-component = 3 - (-6) = 3 + 6 = 9
Therefore, the component form of vector PR is ⟨6, 9⟩.
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Dr.Patterson just started an experiment .she will collect data for 8 days .How many hours is this
Answer:
192h
Step-by-step explanation:
Answer:
192
Step-by-step explanation:
there are 24 hours in a day and the experiment is 8 days so 24×8=192
Question
What is the solution to this system of equations?
ly
101
y=x-2
y=-0.5x + 4
8
6
2.
6
10
O A. (2,4)
O B. (1,2)
O C. (2,1)
O D. (4,2)
PLS HELP
Answer:
im not completely sure but i think its A
Answer:
D . (4,2)
Step-by-step explanation:
i got it right !
Find the slope of a line that passes through the points (2,3) and (4,1)
Answer:
The slope is -1
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
use y2-y1/x2-x1=m to find slope so if you plug both of the points in you would get 1-3/4-2=-2/2 and that would equal -1
help me if u r a brainlist
Answer: ight bet
i/yes
ii/no
iii/no
iv/no
v/no
vi/no
Step-by-step explanation:
need help asap!!
Find the unknown size of the angle
Answer:
I hope this guides you!
Step-by-step explanation:
To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.
a drum has a diameter of 18 in and is 16 in deep find the volume
Answer:
Volume is approximately 4071.5 in³
Step-by-step explanation:
V= πr²h
V=π(9)²(16)
Which expression is equivalent to 4+5i•(2-7i)?
Answer:
(4 + 5i)(2 - 7i) = 8 - 28i + 10i + 35
= 43 - 18i
4 + 5i(2 - 7i) = 4 + 10i + 35
= 39 + 10i
What is the product of twenty hundredths and sixty-five thousandths
Answer:
0.013
Step-by-step explanation:
The product of twenty hundredths and sixty-five thousandths is 0.013.
Given that, the product of twenty hundredths and sixty-five thousandths.
What is the product of two fractions?The product of two fractions is the product of the numerators and the product of the denominators.
Product of two fractions = Product of their denominators / Product of their numerators.
Twenty hundredths = 20/100
Sixty-five thousandths = 65/1000
Product = 20/100 × 65/1000
= 2/10 × 65/1000
= 130/10000
= 13/1000
= 0.013
Therefore, the product of twenty hundredths and sixty-five thousandths is 0.013.
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https://brainly.com/question/7335118.
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