Answer:
Cylinder Volume = π • r² • height
Volume = PI * .210 m^2 * 5
Volume = 0.6927211801 cubic meters
Wood has a mass of 693 / cubic meter
mass = 0.6927211801 * 693 = 480.06 kilograms
Step-by-step explanation:
A building contractor estimates that her profit in dollars for a tall building will be given by the function:
P (h) = -4h2 + 160h,
where h represents the numer of floors in the buliding.
What height will give the maximum profit? What is the maximum profit?
Question to answer: What is the maximum profit?
profit is———
dollars
Answer:
The height is 20
The max profit is 1600
Step-by-step explanation:
P (h) = -4h^2 + 160h
The vertex is at
-b/2a = -160/2(-4) = 160/8 = 20
The height that will give the maximum profit is 20
We want to find the value at 20
P(40) =-4(20)^2 +160(20)
=-1600+3200
1600
If tan a = 9／40
use trigonometric identities to find the values of sin a and cos a.
Answer:
see explanation
Step-by-step explanation:
Given
tan a = [tex]\frac{9}{40}[/tex] = [tex]\frac{opposite}{adjacent}[/tex]
We require the hypotenuse h
Using Pythagoras' identity
h² = 9² + 40² = 81 + 1600 = 1681 ( take square root of both sides )
h = [tex]\sqrt{1681}[/tex] = 41 , thus
sin a = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{9}{41}[/tex]
cos a = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{40}{41}[/tex]
If b=13 and A=76 degrees, then find a.
Answer:
Option (D).
Step-by-step explanation:
In the figure attached,
Triangle ACB is a right triangle having,
Leg AC = b = 13
Leg BC = a
Angle A = 76°
and, Hypotenuse AB = c
By applying tan rule in the given triangle,
tanA = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
tan(76)° = [tex]\frac{BC}{AB}[/tex]
= [tex]\frac{a}{b}[/tex]
4.01 = [tex]\frac{a}{13}[/tex]
a = 13 × 4.01
a = 52.13
a ≈ 52.1
Therefore, Option (D). will be the answer.
Answer:
52.1
Step-by-step explanation:
please help i need this asap
Answer:
They are the same
Step-by-step explanation:
Both have a 2 1/2 height so we wont consider that in our answer. What we have left is the width and length.
Box A = 2 × 1/2 = 1
Box B = 1 × 1 = 1
20 POINTS AND BRAINLIEST !! PLEASE ANSWER THIS QUESTION !!
Answer:
[tex](8m - 2)^{2}[/tex]
Step-by-step explanation:
Answer:
(8m -2) ^2
Step-by-step explanation:
64 m^2 - 32m +4
Recognizing that this is a perfect square trinomial (a^2 - 2ab + b^2) = (a-b)^2
(8m)^2 -2*8m*2 +2^2 = (8m -2) ^2
Subtract 3x^2+7x-43x
2
+7x−43, x, squared, plus, 7, x, minus, 4 from 8x^2-6x+28x
2
−6x+28, x, squared, minus, 6, x, plus, 2.
Answer:
5x² - 13x + 71
Step-by-step explanation:
We are to subtract 3x²+7x-43 from 8x²-6x+28
That is:
8x² - 6x + 28 - (3x² + 7x - 43)
8x² - 6x + 28 - 3x² - 7x + 43
Collect like terms:
8x² - 3x² - 6x - 7x + 28 + 43
5x² - 13x + 71
Answer:
the answer 5x² - 13x + 6
Step-by-step explanation:
In which career would you most likely apply
concepts from geometry?
Answer: Construction and Engineering
2+(x+y)=(2+x)+y is an example of what algebraic property
Answer:
communicative property
Step-by-step explanation:
solve this quadratic equation by completing the square. x^2+4x=15
ANSWER QUICKLY PLS, FIRST GOOD ANSWER GETS BRAINLIEST
(if your answer is incorrect im gonna delete it)
thx
Answer:
x = -2 ±sqrt( 19)
Step-by-step explanation:
x^2 + 4x = 15
Take the coefficient of x
4
Divide by 2
4/2 =2
Square it
2^2 = 4
Add it to each side
x^2 + 4x+4 = 15+4
(x+2)^2 = 19
Take the square root of each side
sqrt( (x+2)^2) =±sqrt( 19)
x+2 = ±sqrt( 19)
Subtract 2 from each side
x+2-2 = -2 ±sqrt( 19)
x = -2 ±sqrt( 19)
What is the distance between points A and B?
А
B
-8 -7 -6 -5 -4 -3 -2 -1
0
1
2
3
4
5
6
7
8
0-6 units
- 1 units
5 units
6 units
Answer this, pic below
Answer:
Option A
Step-by-step explanation:
Temperature on y axis, it changes as time changes
IM BEGGING SOMEONE TO HELP ME FILL IN THE BOXES :( ?
Answer:
1. x =-2, y=6
2. x = 0, y = 0
3. x=2, y=10
Step-by-step explanation:
It will take a long time to explain. If you need explanation, tell me.
if x=3+2v2, find the value of x2 + 1/x2
Answer:
ES IGUAL A 1.03
Step-by-step explanation:
Wich of the following is the definition of the domain of relation
Answer:
The domain of a function is the complete set of possible values of the independent variable. In plain English, this definition means: The domain is the set of all possible x-values which will make the function "work", and will output real y-values.
a = -3, and c = 7. What is the value of b?
Answer:
6.235
Step-by-step explanation:
c²=a²+b² (pythagorean theory)
7²=-3²+b²
49=9+b²
(49-9). 40=b² (find the square root of 40 to obtain the value of b)
Time Remaining C.14:06
time 0:14:06
77%
The stem and leaf diagram shows the ages of 15 office workers.
2 3 5
Key: 23 represents 23 years old
3 4 5 8 8 9
4 1 2 4 6-7 8
5 39
a) How many workers are over 40 years old?
8
workers
b) What is the median age of an office worker?
years old
c) The oldest worker retires and is replaced by a 24 year old.
What is the new median age?
years old
Answer:
Step-by-step explanation:
a=8
b=41
c=39
sorry if im too late
Select the correct answer. What are the solutions to this quadratic equation?
A)x=4+sqrt 10
B)x=-2+4 sqrt 10
C)x=4+2 sqrt 10
D)x=-4+4 sqrt 10
Answer:
Let's solve your equation
[tex]x^2+13=8x+37[/tex]
Step 1: Subtract 8x+37 from both sides.
[tex]x^2+13-(8x+37)=8x+37-(8x+37)[/tex]
[tex]x^2-8x-24=0[/tex]
For this equation: a= 1, b= -8, c= -24
Step 2: Use quadratic formula with a=1, b=-8, c=-24.
[tex]x=\frac{-b+\sqrt{b^2-4ac} }{2a}[/tex]
[tex]x=\frac{-(-8)+\sqrt{(-8)^2-4(1)(-24)} }{2(1)}[/tex]
[tex]x=\frac{8+\sqrt{160} }{2}[/tex]
[tex]x=4+2\sqrt{10}[/tex] or [tex]x=4-2\sqrt{10}[/tex] This is the answer
So,the correct option is C
I hope this help :)
Triangle KLM represents a section of a park set aside for picnic tables. The picnic area will take up approximately 400 square yards in the park.
Triangle K L M is shown. The length of K M is 45 yards and the length of L M is 20 yards. Angle L K M is 25 degrees.
Trigonometric area formula: Area = One-half a b sine (C)
To the nearest yard, what amount of fencing is needed to surround the perimeter of the picnic area?
Answer:
107
Step-by-step explanation:
got it right... your welcome
Answer:
107
i took the review and examStep-by-step explanation:
Simplify (−4k4+14+3k2)+(−3k4−14k2−8). Write answer in standard form.
Answer:
−7k^4−11k^2+6
Step-by-step explanation:
−4k^4+14+3k^2−3k^4−14k^2−8
(−4k^4+−3k^4)+(3k^2+−14k^2)+(14+−8)
−7k^4−11k^2+6
...
I need help please! If you know the answer can you explain?
Answer:
C.
Step-by-step explanation:
Take the equation for finding the volume of a sphere and plug in your radius
4π[tex]\frac{r^3}{3}[/tex] = V
your equation would plug in 7 for the r. Then simplify the rest of the equation.
Answer:
c
Step-by-step explanation:
I'm not sure but i hope this helps
Which of the statements about the diagram is INCORRECT?
A) ∠ 1 ≅ ∠2
B) BE ≅ ED
C) BE ≅ CE
D) CE ≅ EA
Answer:
C) BE ≅ CE
Step-by-step explanation:
[tex]\triangle BEA \cong \triangle DEC\\BE \ncong CE\\[/tex]
Because BE and CE are not corresponding sides.
The corresponding sides and angles of a congruent triangle are congruent.
(c) [tex]\mathbf{\angle BE \cong CE}[/tex] is incorrect
From the question, triangles BEA and CED are congruent.
This means that, the following statements are true
[tex]\mathbf{BE \cong ED}[/tex].[tex]\mathbf{CE \cong EA}[/tex].[tex]\mathbf{\angle 1 \cong \angle 2}[/tex].The above statements represent options (a), (b) and (d).
This means that:
[tex]\mathbf{\angle BE \cong CE}[/tex] is incorrect
This is so because, BE and CE are not corresponding sides.
Hence, (c) [tex]\mathbf{\angle BE \cong CE}[/tex] is incorrect
Read more about corresponding triangles at:
https://brainly.com/question/16459002
a ball with a mass of 6 kg moves at 3 m/s.what is its kinetic energy
Answer:
27
Step-by-step explanation:
Kinetic energy = [tex]\frac{1}{2} m*v^2[/tex]
m = 6
v = 3
3 * 9 = 27
KE = 0.5 m.v^2
= 0.5*6*3^2
=27J
Graph the linear equations. Find three points that solve the equation -3x + 2y= 2
Answer:
(0,1) , (2,4) , (4,7)
Explanation:
convert the equation into slope-intercept form (this would be y=3/2x+1)
now plug in random numbers for x and solve for y by multiplying them by 3/2 and adding 1.
Rewrite 2/5 book 1/2 hour as a unit rate
Answer:
4/5 book per hour
Step-by-step explanation:
In this question, we are to rewrite (2/5)/(1/2) as unit rate.
To write this as a unit rate, what we need to do
is to divide 2/5 by 1/2.
That means 2/5 divided by 1/2
Removing the division and replacing with multiplication will give 2/5 * 2/1 = 4/5 books/hour
Step-by-step explanation:
4/5 books/hour
9=4t t=?
Please answer as soon as possible
Answer:
9/4 or 2 1/4
Step-by-step explanation:
9=4t
Divide each side by 4
9/4=4t/4
9/4 = t
Or as a mixed number
2 1/4 = t
Answer: 9/4
Step-by-step explanation:
the ratio of hopeless romantics to hard-headed skeptics was 459 to 2. if there were 7,803 hopeless romantics, how many hard-headed skeptics were there?
Answer:
333
Step-by-step explanation:
Answer:
34 hard-headed skeptics
Step-by-step explanation:
Write and solve an equation of ratios:
459 2
--------- = ----
7803 x
Cross-multipying, we get:
459x = 15606, which yields x = 15606/459 = 34
There were 34 hard-headed skeptics.
Use the function f(x) = 2x3 - 3x2 + 7 to complete the exercises.
Answer:
what are the excersises
Step-by-step explanation:
Answer:
f(−1) = ✔ 2 f(1) = ✔ 6f (2) = ✔ 11
Step-by-step explanation:
2x-8=4(x+1). Solve for X please!
Answer:
-6 = x
Step-by-step explanation:
2x-8=4(x+1)
Distribute
2x -8 = 4x+4
Subtract 2x
2x-8-2x = 4x-2x+4
-8 = 2x+4
Subtract 4
-8-4 = 2x+4-4
-12 = 2x
Divide by 2
-12/2 = 2x/2
-6 = x
Answer:
[tex]x = - 6[/tex]
Step-by-step explanation:
[tex]2x - 8 = 4(x + 1) \\ 2x - 8 = 4x + 4 \\ 2x - 4x = 8 + 4 \\ - 2x = 12 \\ \frac{ - 2x}{ - 2} = \frac{12}{ - 2} \\ x = - 6[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
What is the value of y?
Answer:
60
Step-by-step explanation:
60+60+y=180 (angle sum property )
120+y=180
y=180-120
y=60
According to the Ruler Postulate, what does
the set of points on any line correspond to?
Answer:
The answer is Real numbers
