Answer:
Surface are = 94.24 cm2
Cylinders =4,244
Step-by-step explanation:
Hi, to answer this question we have to apply the next formula:
Surface area of a cylinder = 2π (diameter/2) h + 2π (diameter /2)²
Replacing with the values given
s = 2π (2/2) 14 + 2π (2/2)²
s = 87.96+ 6.28 =94.24 cm2
Since:
1 m2 = 10,000 cm2
40 m2 = 400,000 cm2 (area that one can of paint covers)
We have to divide the area that one can of paint covers by the surface area of each cylinder:
400,000/94.24 = 4244 cylinders
You have 180 feet of fence to make a rectangular pen. What are the
dimensions of the rectangle with the maximum area?(include explanation or step-by-step)
Answer:
45 x 45 = 2025
Step-by-step explanation:
Write a specific formula to describe the variation:x varies indirectly with the cube root of y;x=3when y= 125
Answer:
x=15(1/3√y)
Step-by-step explanation:
X varies indirectly with the cube root of y
x=k/3√y
x=3 when y=125
3=k/3√125
3=k/5
3=k(1/5)
k=3÷1/5
k=3×5/1
k=15
x=15(1/3√y)
find points of discontinuity y=x-8/x^2+6x-7
Answer:
Step-by-step explanation:
You'll need to use parentheses here to remove ambiguity regarding what's in your denominators:
x - 8 x - 8
y = ------------------ = -----------------
x^2 + 6x - 7 (x + 7)(x - 1)
This last result becomes undefined at x = -7 and x = 1, and thus its graph is discontinuous at those x- values.
The points of discontinuity is x = -7, x = 1
Use parentheses to remove ambiguity considering the denominators
[tex]y=x-8/x^{2} +6x-7[/tex]
= x-8 ÷ (x+7)(x-1)
The result becomes undefined at x = -7
and x = 1,
thus its graph is discontinuous at those x values.
Therefore the points of discontinuity is x =-7 and x = 1.
Learn more about discontinuity points, refer:
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pls be quick i feel stupid not knowing the answer
Answer:
584!
Step-by-step explanation:
Let's see. There is a missing side. Let's call that x. However, we know what the other sides are!
This is how we do it.
We know the largest side's length., 172.
Since we know the other sides, we can subtract their length from 172.
172-57-51-31=33
x=33
So now add the sides!
54+31+66+172+57+30+33+19+51+71\
584!
Hi All,
I have some Maths Questions for you all to have a look at.
Please answer - I am giving 20 points!
I will mark Brainliest as well.
Take care,
Jake
Answer:
a) modal number of teachers in a car is 3
b) median number of teachers in a car is 3
c) mean number of teachers in a car is 2.5
Step-by-step explanation:
modal number is 3 because that is the highest frequency of numbers of carsmedian number is 3 because it is the middle number when you expand the frequency table.mean number is 2.5 because that is the approximate average of all the numbers.Segment AB falls on line 2x − 4y = 8. Segment CD falls on line 4x + 2y = 8. What is true about segments AB and CD?
They are perpendicular because they have the same slope of −2.
They are perpendicular because they have slopes that are opposite reciprocals of −2 and .
They are lines that lie exactly on top of one another because they have the same slope and the same y-intercept.
They are lines that lie exactly on top of one another because they have the same slope and a different y-intercept.
Answer:
They are perpendicular because they have slopes that are opposite reciprocals of −2 and .Step-by-step explanation:
The given lines are
[tex]2x-4y=8[/tex]
[tex]4x+2y=8[/tex]
Let's rewrite each equation in the form [tex]y=mx+b[/tex]
[tex]2x-4y=8\\2x-8=+4y\\y=\frac{2x-8}{4} \\y=\frac{x}{2}-2[/tex]
[tex]4x+2y=8\\2y=8-4x\\y=\frac{8-4x}{2}\\ y=4-2x[/tex]
Now, let's use the perpendicular rule
[tex]m_{1} \times m_{2} =-1\\\frac{1}{2} \times (-2)=-1 \implies -1=-1[/tex]
As you can observe, the slopes satisfy the perpendicular rule, that means the lines are perpendicular.
Therefore, the right answer is the second choice because it states the rule of perpendicularity between the given lines.
Answer:
They are perpendicular because they have slopes that are opposite reciprocals of −2 and .
Step-by-step explanation:
I took the test and the dot is 1/2
Matthew obtained a balloon mortgage but was late on a few payments during
the period of the loan. Which of the following is an unlikely option for him
once the balloon payment becomes due?
A. Sell the home
B. Refinance the balloon payment
C. Foreclosure
D. Pay balloon payment in full
Answer:
The answer is C. Forclosure
Answer:
Refinance the balloon payment
Step-by-step explanation:
AP3X
f(0)=g(0)
f(-2)=g(-2)
f(0)=g(-2)
f(-2)=g(0)
Answer:
F(-2)=G(-2)
Step-by-step explanation:
solve for 5/8= x-1/9
Answer:
[tex] \dfrac{53}{8} [/tex]
Step-by-step explanation:
[tex] \dfrac{5}{8} = \dfrac{x - 1}{9} [/tex]
Cross multiply.
[tex]8(x - 1) = 9 \times 5[/tex]
[tex] 8x - 8 = 45 [/tex]
[tex] 8x = 53 [/tex]
[tex] x = \dfrac{53}{8} [/tex]
Answer: x = 53/8
Step-by-step explanation:
5/8 = x-1 / 9
45 = 8(x-1)
45 = 8x - 8
-8x = -8 - 45
x = 53/8
The measure of central angle MNL is π radians, and the measure of the entire circle is 2π radians. The ratio of the measure of the central angle to the entire circle measure is . The area of the entire circle is π units2. The area of the sector is π units2.
Answer:
The answer is "The calculated ratio of the central angle to the entire circle is 1:2".
Step-by-step explanation:
Let,
MNL angle [tex]= \pi[/tex]
So, the entire circle is [tex]= 2\pi[/tex]
The ratio of the central angle to the entire circle is:
[tex]\Rightarrow \frac{\pi}{2\pi}\\\\\Rightarrow \frac{1}{2}\\\\[/tex]
Hence, the calculated ratio is = 1:2.
Can someone please answer b and c please thank you
Answer:
a: 1.8 b: 11.8 c: 23.6
Step-by-step explanation:
what is the sum of the interior angles of a polygon shown below?
Answer: The sum of the interior angles of a polygon shown in the picture is [tex]540^{\circ}[/tex].
Step-by-step explanation:
The given polygon is a regular pentagon having 5 sides.
The sum of the interior angles of a regular polygon is given by :-
[tex](n-2)\times180^{\circ}[/tex], wherer n= number of sides of the regular polygon.
Since it has 5 sides, then the sum of the interior angles of a polygon would be
[tex](5-2)\times180^{\circ}\\\\=3\times180^{\circ}\\\\=540^{\circ}[/tex]
Hence, the sum of the interior angles of a polygon shown in the picture is [tex]540^{\circ}[/tex].
On a coordinate plane, 2 triangles are shown. The first triangle has points A (negative 2, 1), C (negative 4, 1), and B (negative 3, 4). The second triangle has points A prime (1, negative 2), B prime (4, negative 3), and C prime (1, negative 4).
What is the rule for the reflection?
ry=x(x, y) → (–y, –x)
ry=–x(x, y) → (–y, –x)
ry=x(x, y) → (y, x)
ry=–x(x, y) → (y, x)
Answer:
R(y=x) = (x, y) → (y, x)
Step-by-step explanation:
The coordinates of A are (-2, 1).
The coordinates of A' are (1, -2).
Clearly, the values have been swapped in accordance with ...
(x, y) → (y, x)
This is the result of a reflection across the line y = x. Hence the rule and its name are ...
R(y=x) = (x, y) → (y, x)
Answer:
R(y=x) = (x, y) → (y, x)
Step-by-step explanation:
egd2020
what is the volume of the cone below:
Answer:
D is the correct answer
Step-by-step explanation:
V=πr2h
3=π·52·12
3≈314.15927
Thank me later
Hope this helps!!!
Is this right or wrong?Tell me if I need to change my answer.
Answer:
Yes you are correct
Step-by-step explanation:
Given: circle: k(O), m∠A = 101° m∠L = 79°, m LK = 122° Find: m AJ
Answer:
m arc AJ = 78°
Step-by-step explanation:
If angle A is 101° that means arc LKJ is 202° (the measure of an arc that an inscribed angle intercepts is twice the angle measure). If arc LKJ is 202° and arc LK is 122°, then arc KJ is 80° (m arc LK + m arc KJ = m arc LKJ).
If angle L is 79°, then the m arc AJK = 158° (the measure of an arc that an inscribed angle intercepts is twice the angle measure). If m arc AJK = 158° and m arc KJ is 80°, then the m arc AJ is 158 - 80 = 78º
edit: i think im right but im not completely sure
edit#2: i checked my answer portal after turning it in and yeah im right
A spinner has four equal sections, with one letter from the word "MATH" in each section.
Type your response in each blank below.
1. You spin the spinner 20 times. About how many times do you expect it will land on A?
2. You spin the spinner 80 times. About how many times do you expect it will land on something other than A?
Explain your reasoning.
Answer:
1. 5 times
2. 60 times
Step-by-step explanation:
there is only one a so its 1/4 times 20 and 4 because that is the total
20/4= 5
there is 3 because there is letters that are not a
3/4 times 80
240/4
1. The number of times expected that should be landed on A should be 5 times.
2. The number of times expected should be 60 times.
Calculation of the number of times:1. Since A spinner has four equal sections, with one letter from the word "MATH" in each section.
So, here the number of times should be
= [tex]20\div 4[/tex]
= 5
2. The number of times should be
[tex]= 3/4 \times 80\\\\= 240\div 4[/tex]
= 60
Learn more about spinner here: https://brainly.com/question/9222927
Can someone please help me with this?
Answer:
The lenght is 8 cm
Step-by-step explanation:
Answer:
8 cm.
Step-by-step explanation:
The area of the square base = volume / height
= 960/15
= 64 cm^2.
So the length of each side of the square base = √64
= 8 cm.
2 Points
Which of the following appear in the diagram below?
Check all that apply.
Y
x
O A. _XYZ
OB. ZX
OC. YX
OD. _ZXY
SUBMI
Answer:
D and B
Step-by-step explanation:
hope this is correct!
The following appears in the diagram below are:
XZ and XY and ∠ZXY.
Options B, C, and D are the correct answer.
What is an angle?In mathematics and geometry, an angle is a measure of the amount of rotation or turn between two lines or line segments that meet at a common endpoint, called the vertex of the angle.
Angles are typically measured in degrees (°) or radians (rad).
A full rotation around a point is 360 degrees or 2π radians.
We have,
An angle is a measure of the amount of rotation or turn between two lines or line segments that meet at a common endpoint, called the vertex of the angle.
Arc length is the distance along the curve of a circle or any other curved shape. It is defined as the length of the portion of the circumference of a circle or a portion of a curve between two endpoints, measured along the arc of the curve.
From the diagram,
XZ and XY are arc lengths.
∠ZXY is an angle.
Thus,
The following appears in the diagram below are:
XZ and XY and ∠ZXY.
Learn more about angles here:
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What is the volume of the cup in gallons
(05.06)Which interval on the graph could be described as linear decreasing?
7.
6-
5-
D
B
4.
с
3
A
2.
13
А
ОА
Ов
Ос
OD
Oml fellow FLVS student here, it would be C.:)
Explanation: I got it right lol
In the given graph, interval C could be described as linear decreasing.
What is an interval?"An interval is a set of real numbers that contains all real numbers lying between any two numbers of the set."
In the given graph,
A is the interval(0, 2) where the graph is linear increasing.
B is the interval(2, 4) where the graph is constant.
C is the interval(4, 5) where the graph is linear decreasing.
D is the interval(5, 8) where the graph is linear increasing.
Therefore, the required interval is C.
Learn more about an interval here: https://brainly.com/question/1643786
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What is the probability the spinner does NOT land on green? Assume it cannot land on the line between two colors.
A) 20%:
B) 40%
C) 60%
D) 80%
Answer:
4/5 which is 80%
Step-by-step explanation:
there is a total of 5 which means that the probability to not land on green is 4/5
which in decimal form is .8
which in percent is 80%
1. A school has 400 students. They all come to school by bus, and each bus carries the same number of students. How many students might there be on each bus? PS the number of buses is 100
Answer:
4, I believe
Step-by-step explanation:
400 students
100 buses
400/100=4
Answer:
4
Step-by-step explanation:
There are 400 students, and 100 buses, so number of student in each bus= 400/100
= 4
Which belongs to which? Will mark brainliest
can someone help me please
Answer:
I THINK its D and E because C can simplify to 2/3 and 1/2 making C wrong.
Step-by-step explanation:
Answer:
B C
Step-by-step explanation:
Find the common denominators
For example: 1/3 [tex]\leq[/tex]4/12
It is 12
3 goes into 12 4 times
so now its
?/12[tex]\leq[/tex]4/12
4*1 is 4 so its
4/12[tex]\leq[/tex]4/12
What is the solution of 4−6x≥−8 A.) x≥2 B.) x≤23 C.) x≤2 D.) x≤−2
Answer: I cant tell which one is a or b or c or d but ill say its b
What is the volume of the following triangular prism?
5 cm
15 cm
4 cm
cubic centimeters. You must submit your neat and organized work once you have submitted the test.
Write only the number.
10 points need fast
Answer:
[tex]V=150cm^3[/tex]
Step-by-step explanation:
First we need to find area of the triangle with a base of 4 cm and a height of 5cm, and then multiply that by the length of the prism of 15cm.
The area of the triangle is given by the formula:
[tex]A_T=\frac{bh}{2}[/tex]
where b is the base: [tex]b=4cm[/tex] and h is the height: [tex]h=5cm[/tex]
thus, in this case we have:
[tex]A_T=\frac{(4cm)(5cm)}{2}\\ \\A_T=\frac{20cm^2}{2} \\\\A_T=10cm^2[/tex]
And now, the volume will be the area of the triangle multiplied by the length [tex]l=15cm[/tex] of the prism:
[tex]V=A_T*l[/tex]
Substituting the known values:
[tex]V=10cm^2*15cm\\V=150cm^3[/tex]
The volume in cubic centimeters is 150.
What is the factored form of this polynomial?
X2 + 5x-36
OA. (x+ 4)(x+ 9)
OB. (x-4)(x-9)
O C. (x-4)(x+ 9)
O D. (x - 5)(x+ 8)
Hey There!
x² + 5x - 36
First step is to find out the two numbers when multiplied results to 36 & when subtracted results to 5. Um..Let's think for a lil bit.....Yeah! you got it :) The numbers are 9 and 4!---- x²+ ( 9 - 4)x - 36
Distribute x :---- x² + 9x - 4x - 36
Take the common :---- x ( x + 9 ) - 4 (x + 9 )
---- ( x - 4 ) ( x + 9 )
Yayyy! We got our answer :) The right answer is of Option C [ ( x - 4 ) ( x + 9 ) ]~KEEP EXPLORING! < 3
Triangle DEF has vertex coordinates D(0, -3), E(-1,0), and F(-2,-1). It is
reflected across the y-axis. What are the coordinates of D'EF?
The coordinates of D'E'F' after reflection are,
D' = (0, - 3)
E' = (1, 0)
F' = (2, - 1)
We have to given that,
Triangle DEF has vertex coordinates D(0, -3), E(-1,0), and F(-2,-1).
Here, Triangle DEF is reflected across the y-axis.
The rule for a reflection over the y -axis is,
(x, y) → (- x, y)
Hence, the coordinates of D'E'F' after reflection is,
D' = (0, - 3)
E' = (- (- 1), 0) = (1, 0)
F' = (- (- 2), (- 1)) = (2, - 1)
Learn more about the coordinate visit:
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3) The sum and the difference of the LCM and GCD of two numbers are 312 and 264 respectively. Find the numbers if their sum is 168.
Answer:
The numbers are 72 and 96.
Step-by-step explanation:
LCM + GCF = 312
LCM - GCF = 264
2*LCM = 576
LCM = 576/2 = 288
HCF = 312–288 = 24
The product of two numbers = HCF*LCM
Let the numbers be x and (168-x)
x(168-x) = 24*288 = 6912
x^2–168x+6912 = 0
x = [168 +(168^2 -4*6912)^0.5]/2
= [168 +(28224–27648)^0.5]/2
= [168 + 576^0.5]/2
= (168+24}/2
= 192/2
= 96 and the other number is 168–96 = 72.