PLEAS HELP GRADE 9 MATH ( surface area ) NEED HELP ASAP!! how do I find the surface area of this cylinder?
Answers
Answer:
1231.50432 [tex]m^{2}[/tex]
Step-by-step explanation:
A=2πrh+2π[tex]r^{2}[/tex]
h = 21 m
r = 7 m
A = 2π(7)(21) + 2π([tex]7^{2}[/tex])
A = 1231.50432 [tex]m^{2}[/tex]
Related Questions
Determine whether the following statement is always, sometimes, or never true. Explain your reasoning.
Every complex number has both a real part and an imaginary part.
Answers
The statement "Every complex number has both a real part and an imaginary part" is always true.
Every complex number is defined as a number of the form "a + bi," where "a" represents the real part and "bi" represents the imaginary part.
The real part "a" is a real number, and the imaginary part "bi" is a multiple of the imaginary unit "i," where "i" is defined as the square root of -1.
Even if a complex number has a zero imaginary part, it is still considered to have both a real and an imaginary part.
In that case, "a" represents the real part, and the imaginary part "bi" becomes zero.
For example, the complex number 3 + 0i is a real number (3) and can be represented as having a real part of 3 and an imaginary part of 0i.
In conclusion, every complex number by definition consists of both a real and an imaginary part, making the statement "Every complex number has both a real part and an imaginary part" always true.
To learn more about the complex number;
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8 x y =369 y = ?
y x 9 = 63 y = 6 + y =?
Answers
Answer:
1. 46.125
Step-by-step explanation: Is your second one in the right format? I don't understand what it is asking. For the first one, however, you need to free the y being multiplied to 8 and so you are going to undo it by dividing 369 by 8.
A girl starts from Point A and walks to 285m to B on a bearing of 078°. She then walks due south to a point C which is 307m from A. What is the bearing of A from C and what is IBCI
Answers
Answer:
bearing of A from C is - 65.24°
the distance |BC| is 187.84 m
Step-by-step explanation:
given data
girl walks AB = 285 m (side c)
bearing angle B = 78°
girl walks AC = 307 m (side a)
solution
we use here the Cosine Law for getting side b that is
ac² = ab² + bc² - 2 × ab × cos(B) ...............1
307² = 285² + x² - 2 × 285 cos(78)
x = 187.84 m
and
now we get here angle θ , the bearing from A to C get by law of sines
sin (θ) =
sin (θ) = 0.5985
θ = 36.76°
and as we get here angle BAC that is
angle BCA = 180 - ( 36.76° + 78° )
angle BCA = 65.24°
and here negative bearing of A from C so - 65.24°
Step-by-step explanation:
1. Sam was driving to visit his friend in Texas. He will have to drive 550 miles to get to his friends home.
Sam drives 65 miles per hour and has already driven 325 miles. Write an equation to find how much
longer in hours Sam will need to drive to reach his destination.
Answers
Answer: 65x + 325y = 550
Randy has $15 to spend on fruit.
Using only estimation, which quantities of fruit can Randy reasonably buy? Check all that apply.
Answers
Answer:
Answer:
7.2 pounds of apples
10.75 pounds of pears
4.22 pounds of strawberries
Step-by-step explanation:
help fast
2
- 2
2
4
-2
4
N
Which equation could be solved using the graph above?
Ox2 + x - 2 = 0
Ox2 + 2x + 1 = 0
Ox2-1=0
Ox2 - 2x + 1 = 0
Answers
How are comparisons between negative numbers different than comparisons between positive numbers?
Answers
Slope intercept form
Answers
Answer: -2/6
Step-by-step explanation:
pls answer the problem below
Answers
Answer:
9 hours
Step-by-step explanation:
just do 441/7 and then you get 63 miles per hour
and then you divide 567/63 and you get 9!
easy peasy hope I helped
NEED HELP! [URGENT] Submit the worksheet with your constructions to your teacher to be graded.
Answers
give me more details. that's a bit confusing
This right circular cone has a volume of 75 cubic inches. The height of the cone is 9 inches. What is the length of the radius? A. 4 in. B. 5 in. C. 6 in. D. 8 in.
Answers
Answer:
B. 5 in.
Step-by-step explanation:
Answer:
either 8 or 4
Step-by-step explanation:
because it can't be 6 or 5
Given the f(x) =8(3-x) what is the value of f(-1)
Answers
Answer:
32 alternative forms: 2⁵
Step-by-step explanation:
Answer:
f(-1)=32
Step-by-step explanation:
f(x) =8(3-x)
f(-1)=8(3-(-1))
f(-1)=8(3+1
f(-1)=8*4
f(-1)=32
I need a word question that makes sense as in it gets the right answer, it has to be a negative divided by a positive
Answers
Answer:
-9 ÷ 3 = -3
Step-by-step explanation:
is this what you need?
i need help with my math homework
Answers
Answer:
x=3
Step-by-step explanation:
g(x)=2x+1,
When g(x)=7
g(x)=2x+1,
7=2x+1
7-1=2x
x=6/2
x=3
In a collection of nickels, dimes, andquarters the value of the collection is$12.85. If the number of nickels is 6 lessthan twice the number of dimes and thenumber of quarters is 5 more than twicethe number of dimes, how many quartersare there?
Answers
What is the reason for each step in the solution of the equation?
12−5x+6x=4
Drag and drop the reasons into the boxes to correctly complete the table.
12−5x+6x=4
12+x=4
x=−8
Answers
The correct reason for each step in the solution of the equation would be as follows:
12 − 5x + 6x = 4 - Given
12 + x = 4 - Combine Like Terms
x= −8 - Subtraction Property of Equality
Hope this answers the question. Have a nice day.
suppose river has new treats that are 10 calories each. how many of the new treats can she have and remain in her calorie range?
Answers
She can have at least 3 and at most 6 dog treats in a day
River can have - n = 10/y number of treats to remain in her calorie range, where the calorie range is [y] calories.
What is the general equation of a Straight line?The general equation of a straight line is -
[y] = [m]x + [c]
where -
[m] is slope of line which tells the unit rate of change of [y] with respect to [x].
[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.
The equation of a straight line can be also written as -
Ax + By + C = 0
By = - Ax - C
y = (- A/B)x - (C/A)
We have the following problem -
River has new treats that are 10 calories each. how many of the new treats can she have and remain in her calorie range.
Assume the calorie range to be [y] calories and assume she can have [n] number of treats. We can write the linear function as -
10n = y
OR
y = 10n
This this the equation of the straight line. She can have -
n = 10/y
number of treats to remain in her calorie range.
Therefore, River can have - n = 10/y number of treats to remain in her calorie range.
To solve more questions on straight lines, visit the link below-
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Can SOMEONE PLEASE HELP ME I DONT UNDERSTAND THIS PLEASEE ILL GIVE YOU BRIANLIEST
Answers
Answer:
sorry I also dont understand
(-2, 1)
(x, y) -> (x+1, y+1)
(1, 1)
77 x(3x+8)=107+88x
What is the answer
Answers
Answer:48
Step-by-step explanation: pretty easy
Are the points O, M, and U collinear?
.
Choose 1 answer:
A. Yes
B. No
Answers
Answer:
It would be B because the letters are not in a straight line.
Step-by-step explanation:
Have a good day!!
Somebody help me please
Answers
Answer:
Step-by-step explanation:
HELP PLEASE !!!!!!!!!!
Answers
Answer:
m < 2 = 38°
Step-by-step explanation:
The exterior angle with the measure of < 38° corresponds to m < 2 (as they are corresponding angles that lie on the same side of the transversal). Therefore, m < 2 = 38°.
natilie walked 3/5 mile in 1/2 hour how fast did she walk
Answers
Answer:
1.2 mph
Step-by-step explanation:
3/5 = 0.6
Multiply 0.6 by 2 to find the distance gone in a whole hour
0.6*2 = 1.2
I need help please been getting all the answers wrong
Answers
Answer:Question? :c
Step-by-step explanation:
Answer:
what's the problem?
ma'am/Sir
The population of Miami-Dade County in Florida in 2010 was 2, 496, 435 and the land area was 1, 898 square miles. The population increased by 7.9% in 2015. Part 1: To the nearest whole number, find the population density, in people per square mile, for Miami- Dade County in 2015
Answers
The population density of the city which is the ratio of population size and the land area is 1419 people per square mile.
The initial population = 2496435The percentage increase in population = 7.9%Land Area = 1898 mi²The population of the city on 2015 can be calculated thus :
(1 + percent increase) × initial population (1 + 0.079) × 2496435 = 2693653.365 peopleThe population of a city is calculated using the relation :
Population density = Population / Land Area Population density = 2693653.365/1898 Population density = 1419.21Therefore, the population density is 1419 people per square mile.
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Which is greater? 2x²-2x + 6 - (-3x) or -(3-2x²) + 5 + 2x?
Answers
Answer:2x²-2x + 6 - (-3x)
Step-by-step explanation:
Adrian said that g(x) = |x + 4| is translated up 4 units from the parent function f(x) = |x|. Do you agree or disagree? Why?
Answers
Answer:
Below.
Step-by-step explanation:
Disagree.
The + 4 translates the parent function 4 units to the left ( not up).
help me calculate the perimeter of this shape
Answers
Answer:
24m
Step-by-step explanation:
8+10=6=24 because you add to find perimeter.
Answer:
Perimeter = 24 m
Step-by-step explanation:
Perimeter = S +S+S
=(8+10+6)
=24m
Hope that this is helpful. Have a nice day.
what is the midpoint of (5,-3) and (-1,-7) .
Answers
MARKING BRAINIEST Can you help me with this math problem please ?
Answers
Answer:
You answer can be written for Solving X two different ways
The inquitly form is
x[tex]\geq[/tex]-6
Interval Notation is
{-6,∞)
Step-by-step explanation:
In order to graph put a close dot on the number -6 and then color your line to the right of the number line. Because the infinity sign is positive so all the number after the -6 is positive. So a close dot on the number -6 and then draw a line or color a line to the right of the number line