Answer:
It will cost $39,337.92 for the piller.
Step-by-step explanation:
Given that,
The diameter of the cylinder, d = 8 m
Height of the cylinder, h = 9 m
If concrete cost $87 per cubic meter, we need to find how much the concrete cost for the pillar.
The volume of the cylinder is given by :
[tex]V=\pi r^2h\\\\=3.14\times (4)^2\times 9\\\\=452.16\ m^3[/tex]
Cost per cubic meter = $87
Cost for 452.16 m³ will be :
C = 452.16 × 87
C = $39,337.92
Hence, it will cost $39,337.92 for the piller.
Prove that the square root of 8+ the Square root of 2 = 3 • 2 1/2
help me plz guys for 14 point
A circle is graphed on a coordinate grid. Its center is at (3, 4), and the circle passes through point (3, 1). What is the approximate area, in square units, of the circle? (Use 3.14 for π.)
Answer:
it is either 18.84 or 31.40
Step-by-step explanation:
just do it in your head
The area of the circle is 28.26 square units
The center of the circle is given as:
[tex](a,b) = (3,4)[/tex]The circle passes through the following point
[tex](x,y) = (3,1)[/tex]Start by calculating the radius using the following distance formula
[tex]r = \sqrt{(x -a)^2 + (y - b)^2}[/tex]
So, we have:
[tex]r = \sqrt{(3 -3)^2 + (4 - 1)^2}[/tex]
[tex]r = \sqrt{9}[/tex]
Square both sides
[tex]r^2 = 9[/tex]
The area of the circle is then calculated as:
[tex]Area = \pi r^2[/tex]So, we have:
[tex]Area = 3.14 \times 9[/tex]
[tex]Area = 28.26[/tex]
Hence, the area of the circle is 28.26 square units
Read more about areas at:
https://brainly.com/question/15673093
Jamar spent $5.60 on 5 bags of Doritos The neighborhood store. how much did each bag of chips cost?
Answer:
5!60
Step-by-step explanation:
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The company plans to have the tanks painted after they are installed. Describe the effect that doubling the diameter has on the amount of paint needed to paint the tanks. What happens when the diameter is increased by a factor of 3?
Answer:
The effect of doubling the diameter is increased the area to paint as 4 times. So, paint needed is 4 times than it was before. And the area is increased by 9 times when the diameter is increased by a factor of 3. So, paint needed is 9 times than before.
Step-by-step explanation:
Please remember the concept
If side lengths are in the ratio a : b
Then the area are in the ratio of a^2 :b^2
The volume are in the ratio of a^3 :b^3,
When diameter is doubled, the area ratio becomes [tex]x^{2} :(2x)^{2}[/tex] which is simplified to [tex]x^{2} :4x^{2}[/tex]
So, the area is increased by 4 times.
According to this concept , the diameter is increased by the scale factor 3.
Let the diameter of tank is 'x', so the diameter becomes "3x"
So, it's area ratio would be [tex]x^{2} :(3x)^{2}[/tex]
If we simplify it we get [tex]x^{2} :9x^{2}[/tex]
We conclude that area to be increased by 9 times.
Find the measure of angle A.
Please help??
Answer:
4
Step-by-step explanation:
Answer:
Creo que es 40
Step-by-step explanation:
80+15x+(11x-4)=180
26x=104
x=4
Entonces
11x-4 --> 11*4-4 = 40
Write a function for the following table
X. Y
-1. -4
0. -2
1. -1
2. -0.5
Please help I only have 20 minutes
Answer: x+1 = y/2
Step-by-step explanation:
X is increasing by 1
(Adding 1 to each number)
For Y, divide it by 2
-4/2 = -2
-2/2 = -1, etc.
I need the answer pls it is due in 10 minutes
Answer:
she never brought her cost up when they got another cup cake it should
x y
1 3.50
2 7
3 10.50
4 14
i ant really graph them
Step-by-step explanation:
Carla and Rob left a 15% tip after having lunch at a restaurant. The amount of the tip was $3. Carla’s lunch cost $12. Write an equation you can use to find x, the cost of Rob’s lunch.
Answer:
0.15(x + 12) = 3
Step-by-step explanation:
The cost of the lunch before the tip was 12 + x
The tip is 15% of the cost of lunch: 0.15(x + 12)
The tip was $3
0.15(x + 12) = 3
(24 = 3) + 3 + 33
Your answer
In the diagram at right, which letter, with regards to W, is the angle of depression?
Answer:
c
Step-by-step explanation: i think
♦Will mark brainliest♦
A zoologist is recording the loss of wolves in her state. She notes the number of wolves, w, in the state on January 1. One year later, there were 84 wolves in the state, which is 23 fewer wolves than were in the state a year earlier. What is the number of wolves in the state on January 1? Which equation can be used to find the number of wolves in the state on January 1?
w−84=−23
w + 23 = 84
w−23=84
23−w=84
For those who know this answer and did not get to copy the link below and paste it into search bar thanks have a wonderful day
https://brainly.com/question/20143416
Answer:
3.
Step-by-step explanation:
The wolves from the previous year minus 23 is 84.
What point is on both lines y=12x+3 and y=x+1
(no graph)
Step-by-step explanation:
by having two equations that have the same point, you can set the two equations equal to each other
y = 12x + 3, y = x + 1
12x + 3 = x + 1
11x = -2
x = -2/11
when you find the the x value, plug it back into either one of the equations
y = x + 1
y = (-2/11) + 1
y = 11/11 - 2/11
y = 9/11
the point (solution):
(-2/11, 9/11)
Answer:
(-2|11, 9|11)
Step-by-step explanation:
hope it helps
Please help for the whole section i really need this answer am failing my math class
yoo plz help with these 2 questions
using algebra to solve for missing in a formula
Answer:radius is 6,height is 4
Step-by-step explanation:
I NEED HELP PLS!! i am so confused on what to do if you can explain that would be awesome!
Answer:I am pretty sure that it is that you add 26 and 71 and then subtract it by 180 and then the other one is across so it would be the same answer so it would be 83
Step-by-step explanation: I hope this helped
through: (-3, -4) and (2, 1)
Answer:
y = 1x - 1
Step-by-step explanation:
[tex]\frac{y2-y1}{x2-x1}\\\frac{1-(-4)}{2-(-3)}\\\frac{1+4}{2+3}\\\frac{5}{5}=1\\y=1x+b\\1=1(2)+b\\1 = 2 + b\\-1 = b\\y = 1x-1[/tex]
Find the equation for the line that passes through
(1,6)that has slope −2 . Give your answer in point-slope form. You do not need to simplify.
pls hurry I need help I will give brainliest
Answer: answer in pic
Step-by-step explanation:
Three friends eat lunch together. the bill comes to $21 plus 10% tax. If they split the bill and tax evenly, then how much will each person owe?
Answer:
i think they'll owe $7.7...if it's wrong i'm sorry !
Step-by-step explanation:
i added $21 plus 10% then divided by 3 and got 7.7 .
Identify the angle pair from the diagram above: <2 and <7
Answer:
2 and 7 are alternate exterior anglesStep-by-step explanation:
Alternate exterior angles are angles that are on different sides of the transversal and on the outside of the parallel lines. There is a theorem that says that alternate exterior angles are congruent if two parallel lines are cut by a transversal.
Factor the following expression: x^2+3x
3x^2+ 4x + 5 for x = -2
Which input value produces the same output value for
the two functions?
O x= -12
O x= -9
O x= -6
O X=-3
HELP PLEASE
Answer
-6
Step-by-step explanation:
Took test
3. Use the distributive property to express 64 + 24. *
Answer: 8(8+3)
Step-by-step explanation:
64 + 24 is the same as 8*8 + 8*3. Therefore you can "pull out" the 8 and that is your answer
a college spends 40% of an individual's tuition on salaries and the remainder on other costs if they spend 1,800 on other costs how much is an individual's tuition?
Answer:
$3000
Step-by-step explanation:
If the remainder is spent on other costs, then that means 60% of the tuition as spent on other costs.
To find the total tuition, divide 1800 by 0.6:
1800/0.6
= 3000
So, their tuition was $3000
1. through (0,-1) slope= -1
2. through (-5,4) slope= -2
I don't know how to solve them I need help ASAP!
Answer:
Step-by-step explanation:
I will give you equations in slope intercept form
1.
y=-x-1
2.
y= -2x - 6
Find the answer to 12.6 x 3.9?
Answer: 49.14
Step-by-step explanation: All you have to do is multiply the two and then you get 49.14 12.6 X 3.9=49.14
HOPE THIS HELPED, IF THIS IS NOT WHAT YOU WERE LOOKING FOR THEN I AM SORRY FOR WASTING AND ANSWER! IF CORRECT THEN YOU ARE WELCOME FOR THE HELP! :)
HAVE A NICE DAY!!! :D
can someone help me please?
Answer:
(0,4) and (-4,0)
Step-by-step explanation:
Please help due in 9 minutes
Answer:
the ans is 5 I think only
1. What do you need to show in order to prove that a number is divisible by 3?
Then, use an example to show your explanation is correct. *
Answer:
You can divide and see if its devided by 3, and if its not in the times table, you will have a decimal
Step-by-step explanation: