The lateral surface area of cone A is equal to the lateral surface area of
cylinder B.
A
2h
A. True
B. False
Answers
The lateral surface area of cone A is equal to the lateral surface area of
cylinder B. This is true.
How to illustrate the information?Lateral area of cone is given by: πrl
where r is the radius and l is the slant height
Here r=r and l=2h
Hence, lateral area of cone A= π×r×2h = 2πrh
Lateral area of cylinder is given by: 2πrh
where r is the radius and h is the height
Lateral area of cylinder B=2πrh
Clearly, both the lateral areas are equal. Therefore, it's true.
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Related Questions
A 21-foot bean is to be cut into three pieces so that the second and third piece are each 3 times the length of the first piece. If x represents the length of the first piece, find the length of each piece
Answers
Answer: 3, 9, and 9
Step-by-step explanation:
X+3x+3x=217x=21x=33, 9, 9=21
find M angle one and M angle to justify your answers
Answers
Answer:
Step-by-step explanation:
13.
m1 is 120 because angle 120 and angle 1 are tranversal angle
So now we know that angles m1 and m2 are vertically opposite angle
Then m2 = 120
m1 = 120
m2 = 120
14.
angle 1 and 105 have the sum of 180 because they are Interior angles on the same side of the transversal
So angle 1 equals 180-105=75
angle 2 and angle 1 are on a line so the sum of the 2 angles are 180
So: 180 - 75 = 105
m1 = 105
m2 = 75
Describe how the equations for an ellipse, circle, hyperbola and parabola differ from one another. Include an example of each in your description.
Answers
See explanation below
Explanation:An ellipse has a standard equation formula written as:
[tex]\frac{(x^{}-h)^2}{a^2}+^{}\frac{(y-k)^2}{b^2}\text{ = 1}[/tex]When the sign between the x^2 and y^2 terms is positive, then it is a ellipse
[tex]\begin{gathered} \text{example of an ellipse:} \\ \frac{(x-3)^2}{9}\text{ + }\frac{(y\text{ - 8})^2}{25}\text{ = 1} \end{gathered}[/tex]An hyperbola has a standard equation written as:
[tex]\frac{(x^{}-h)^2}{a^2}-^{}\frac{(y-k)^2}{b^2}\text{ = 1}[/tex]when the sign between the parenthesis of x^2 and y^2 terms is minus, then it is an hyperbola
[tex]\begin{gathered} \text{example of a hyperbola:} \\ \frac{x^2}{64}\text{ - }\frac{y\text{ }^2}{49}\text{ = 1} \end{gathered}[/tex]A circle has a general formula written as:
[tex]\begin{gathered} (x-h)^2+(y-k)^2=r^2 \\ \text{where vertex = (h, k)} \\ r\text{ = radius} \end{gathered}[/tex]The terms x^2 and y^2 are not divided by a constant. Also the left side of the equation represents the square of the radius
[tex]\begin{gathered} An\text{ example of a circle} \\ (x-1)^2+(y-3)^2\text{ = }10 \end{gathered}[/tex]Parabola has a vertex form of equation written as:
[tex]\begin{gathered} y=a(x-h)^2+\text{ k} \\ \text{where a = constant} \end{gathered}[/tex][tex]\begin{gathered} An\text{ example:} \\ y\text{ = 2(x - 1})^2\text{ + }3 \end{gathered}[/tex]Here, we only have term x^2, no y^2. y has an exponent of 1. Also a constant of a
12. The length of one side of
a rectangle is
12cm.
The length of the diagnol of
the rectangle is 13cm
Calculate the area of the
rectangle
Answers
Answer :- 60 cm^2
Step-by-Step Solution :-
Let ABCD be the Rectangle.
Given :
AD = 12 cm
BD = 13 cm
To Find : Area of ABCD
Solution :
In ∆ADB,
AD = 12 cm and BD = 13 cm
By Pythagoras Theorem,
(BD)^2 = (AD)^2 + (AB)^2
13^2 = 12^2 + (AB)^2
169 = 144 + (AB)^2
AB^2 = 169 - 144 = 25
AB = √25
Therefore, AB = 5 cm
Now, to find the Area,
Area of Rectangle = length × breadth
Area of ABCD = 12 × 5
Therefore, Area of ABCD = 60 cm^2
Expand 3(x - 1)(x + 4) and simplify.
Answers
Answer:
3x2-11x-4
Step-by-step explanation:
I WILL GIVE YOU BRAINLIST Show your work
11/2 divide by 3/4
Answers
So 11/2 x 4/3
11x4 = 44 and 2x3 = 6 which is 44/6
44/6 can be simplified to 22/3
The answer is 22/3
2. Kieran, Jermaine and Chris play football. Kieran scored 8 more goals than Chris Jermaine scored 5 more goals than Kieran. Altogether they have scored 72 goals. How many goals did they each score?
Answers
Answer:
Step-by-step explanation:
k = x+8
c= x+5
j= x+5
3x+18=72
x = 18
Chris = 23
Kieran = 26
Jermaine = 23
Answer:
Chris = 17 goals
Kieran = 25 goals, and
Jermaine = 30 goals
Step-by-step explanation:
Let K, J, and C stand for the goals scored by Kieran, Jermaine, and Chris, respectively.
We learn that:
K = C + 8 [Kieran scored 8 more goals than Chris]
J = K + 5 [Jermaine scored 5 more goals than Kieran]
K + J + C = 72 [Altogether they have scored 72 goals]
-----
We have 3 equations and 3 unknowns. Therefore, we should be able to find a solution by rearranging and substituting.
Let's start with K + J + C = 72 and find ways to eliminate two of the three variables.
We can substitute for K since K = C + 8
K + J + C = 72
(C+8) + J + C = 72
Rearrange:
2C+8 + J = 72
We can also substitute for J since J = K + 5
2C+8 + J = 72
2C+8 + (K + 5) = 72
Again, we can substitute for K since (K = C + 8)
2C+8 + (C+8) + 5 = 72
2C+8 + (C+8) + 5 = 72
3C +21 = 72
3C = 51
C = 17
---
Since C = 17, we can find K with K = C + 8
K = C + 8
K = 17 + 8
K = 25
---
Since K = 25, we can find J with J = K + 5
J = K + 5
J = 25 + 5
J = 30
===
We find:
C (Chris) = 17 goals
K (Kieran) = 25 goals, and
J (Jermaine) = 30 goals
17 + 25 + 30 = 62 total goals.
Mrs. Harris has 5 blue, 8 red, 3 green, and 7 yellow candies in a bag. If Mrs. Harrisrandomly selects a candy, what is the probability she will select a yellow or blue candy?
Answers
Blue = 5
Red = 8
Green= 3
Yellow= 7
Total candles = 5+8+3+7 = 23
Yellow and blue candles = 7+5 = 12
To find the probability divide the number of blue and yellow candles (12) by the total number of candles.
12/23 = 0.52
PLEASE HELP ME ASAPPP
Sherry needs to sell T-shirts as a fundraiser for a charity. She starts with 40 T-shirts and begins selling at a constant rate of 5 T-shirts each day.
Use the Segment tool to plot a graph representing the number of T-shirts Sherry has left to sell from the time she begins selling until the T-shirts are gone.
Answers
The circle below is centered at (5,5). Use the graph to answer the following questions. please help!
Answers
Answer: I don't know why I'm here
Step-by-step explanation: help
Can a triangle have sides with the given lengths?a2 in, 4 in, 6 inYesNo
Answers
In general, if the sides of a triangle are a, b, and c, they must satisfy the inequalities below
[tex]\begin{gathered} a,b,c\rightarrow\text{ sides of a triangle''} \\ \Rightarrow a+b>c \\ b+c>a \\ c+a>b \end{gathered}[/tex]Therefore, in our case,
[tex]\begin{gathered} 2+4>6\Rightarrow6>6\rightarrow False \\ 4+6>2\Rightarrow10>2\rightarrow True \\ 6+2>4\Rightarrow8>4\rightarrow True \end{gathered}[/tex]The first inequality is false; thus, the triangle cannot exists. The answer is No.Which expression are equivalent when y=2 and y=5
Answers
The equivalent expressions when y = 2 and y = 5 are the expressions that have the same numeric value when y = 2 and when y = 5.
What are equivalent expressions?Equivalent expressions are expressions that have the same numeric value.
Hence, the equivalent expressions when y = 2 and y = 5 have the same value when y = 2 and y = 5.
This numeric value is calculated replacing each instance of y by 2 when y = 2 and each instance of y by 5 when y = 5.
For example:
2y + 3 at y = 2: 2(2) + 3 = 7.2y + 3 at y = 5: 2(5) + 3 = 13.Different numeric values, hence not equivalent, just an example as to how you should proceed.
You will do this for all expressions, and when you find equal values for y = 2 and for y = 5, then they will be equivalent.
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What is the slope of a line that is perpendicular to a line represented by the equation 6y=−7x+4?
Enter your answer, as a fraction in simplest form, in the box.
Answers
The slope of the line that is perpendicular 6y=−7x+4 is: 6/7.
What are the Slopes of Perpendicular Lines?If one line has a slope of a/b, the slope of the line that is perpendicular to the line would be the negative reciprocal of a/b, which is -b/a.
If the slopes of perpendicular lines are multiplied together, for example (a/b)(-b/a), we would always have a result of -1.
Rewrite the equation 6y = −7x + 4 in slope-intercept form as y = mx + b, in other to determine the value of m = slope.
6y/6 = −7x/6 + 4/6
y = −7/6x + 2/3
The slope of 6y = −7x + 4 is -7/6. 6/7 is the negative reciprocal of -7/6. Therefore, the slope of the perpendicular line is: 6/7.
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if a child is 120cm tall, but they grow 4% bigger in a year, how tall will they be?
Answers
Answer
The height of the child in a year time = 124.8 cm
Explanation
The child is currently 120 cm tall.
The child grows 4% bigger in 1 year.
We now need to calculate how tall the child is in that 1 year.
New height for the child = (Current height) + (Increase in height)
Current height = 120 cm
Increase in height = 4% of 120 cm = 0.04 × 120 = 4.8 cm
New height for the child = (Current height) + (Increase in height)
= 120 + 4.8
= 124.8 cm
Hope this Helps!!!
HELP!!!
An area model with 12 shaded parts and 6 unshaded parts. The shaded part is labeled two-thirds. Adela divided Two-thirds of a cup of bird food equally among 6 birds. How much food did she give each bird? The dividend is The divisor is . The division expreesion is Rewrite the division expression to get Each bird receives -cup of bird food.
Answers
Each bird would receive 1/9 cup of bird food.
What is the Quotient?A quotient is defined as the outcome of dividing an integer by any divisor that can be said to be a quotient. The dividend contains the divisor a specific number of times.
We have been given an area model with 12 shaded parts and 6 unshaded parts. The shaded part is labeled two-thirds. Adela divided Two-thirds of a cup of bird food equally among 6 birds.
The dividend would be
⇒ 2/3
The divisor would be
⇒ 6
The division expression would be
⇒ 2/3
Divided by 6
Rewrite the division expression to get
⇒ 2/3 × 1/6
⇒ 2 / 18
⇒ 1/9
Therefore, each bird would receive 1/9 cup of bird food.
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2. LeRoy purchased 6 gallons of gasoline for
$19.56. Which describes the constant of
proportionality?
A.
B.
C.
D.
$2.26 per gal
$3.26 per gal
$3.29 per gal
$3.39 per gal
Answers
Answer = 3.26
does anyone know the answer?
Answers
ΔXYZ ≅ ΔUTV
The two angles of the non-included side of the triangle are congruent to the two sides and non-included sides of the second triangle, according to the AAS theorem.
What exactly is the AAS theorem?The AAS theorem is an angel, angle side theorem that states that two angles on any side of a triangle that are congruent to two angles on another triangle are said to be congruent.The triangles are congruent if two pairs of corresponding angles and the side between them are known to be congruent. This is known as the angle-side-angle shortcut. Angle-angle-side (AAS) is another shortcut in which two pairs of angles and the non-included side are known to be congruent.To learn more about congruent triangles refer to :
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Each person gets 3 scoops of ice cream. Is this relationship between the number of people and the number of scoops proportional?
Answers
Yes, the number of scoops proportional.
Define Proportional
A linear relationship between two amounts or variables is indicated by proportionality. Both quantities increase in size when one doubles, and both decrease in size when one drops to a tenth of its original value.
Hence, It is proportional. This is because as the number of people increases, the number of scoops also increase.
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Evaluate the function for the following values:
f(1) =
f(2)=
f(3) =
Answers
Answer: [tex]f(1)=1, f(2)=0, f(3)=2[/tex]
Step-by-step explanation:
[tex]0 \leq 0 \leq 1 \implies f(1)=1^2 =1\\\\1 < 1 \leq 2 \implies f(2)=-2+2=0\\\\2 < 3 \leq 3 \implies f(3)=3^2 -3(3)+2=2[/tex]
£ represents a group of 20 people that visited paris for a weekend break. 8 of the group visited the eiffel tower (ET) 13 of the group visited the no tre-dame cathedral (NDC) 5 of the group did not visit either of these places a person is chosen at random from the group. what is the probability that this person only visited one of the two places?
Answers
The probability that this person choosen only visited one of the two places is 9/20
What is Probability?
Probability is a measure of the possibility that an event to occur.
The probability for an event to occur= Possible outcome /Total outcome
to get the possible out come we must Know the number of people that visited ET and NDC only.
using set theory;
if x is the no of people that visited both places then,
8-x =ET only
13-x= NDC only
5= none visited ET and NDC
x+13-x+8-x+5=20
collect like terms
26-x= 20
x =6
therefore ET only= 2
NDC only= 7
probability of ET = 2/20
probability of NDC= 7/20
therefore probability that the person chosen only visited one place = p(ET)+P(NDC)= 7/20+2/20
= 9/20
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5. Paetyn is going rock climbing. She starts at 12-yards
above sea level. She ascends 38-yards before lunch. She
descends 15-yards after lunch. What is Paetyn's final height
relative to sea level?
Answers
Answer:
35 yards above sea level
Step-by-step explanation:
12 + 38 - 15
50 - 15
35
17) g(x)= x³ + 4x²
f(x) = 3x + 1
Find g(x) + f(x)
Answers
Answer:
x³ + 4x² + 3x + 1
Step-by-step explanation:
fg(x) + f(x)
= x³ + 4x² + 3x + 1
A wise man once said, "300 reduced by 3 times my age is 84." What is his age?
Answers
Answer:72
Step-by-step explanation:
Which equation has no solution?
Answers
Answer:
1.)|4x-2|=-6
This eguation has not solution.
Answer:
the first one; absolute value cannot be negative
Step-by-step explanation:
|4x-2| = -6
add 2
|4x| = -4
divide 4 on both sides
x = -1
|4x-2| = 6
repeat the same steps
x = 2
select all the equations that have the same solution as the equation 3x-12=24
Answers
The equation that have same solution to 3x-12=24 is 4x - 30 = 18.
What is an equation?A mathematical equation is the statement that illustrates that the variables given. In this case, two or more components are taken into consideration to describe the scenario.
The equation given is illustrated as:
3x - 12 = 24
Collect like terms
3x = 24 + 12
3x = 36
Divide through by 3.
3x / 3 = 36 / 3
x = 12
In this case, 4x - 30 = 18 will be:
4x - 30 = 18.
Collect like terms
4x = 18 + 30.
4x = 48
Divide
x = 48/4
x = 12
Therefore, 4x - 30 = 18 has same solution.
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Factor completely... Please help me with this
Answers
Answer: (5x - 1)(x + 9)
Step-by-step explanation:
Please note the method of factoring may differ per class, but this is how I was taught.
First, we will multiply the coefficient of x² by the constant.
5 * -9 = -45
Next, we will find two numbers that add up to 44 (coefficient of x) and multiply to -45 (the number we got above).
-1 * 45 = 45
-1 + 45 = 44
-1 and 45 ✓
Now, we can start to factor. First, we will rewrite 44x.
5x² + 45x - 1x - 9
Then, we will factor by grouping.
5x(x + 9) -1(x + 9) ➜ (5x - 1)(x + 9)
The completely factored form is:
(5x - 1)(x + 9)
Combine the like terms to create a equivalent expression -4r - 2r + 5
Answers
After combining the like terms of the given expression -4r -2r + 5 the equivalent expression is -6r +5.
As given in the question,
Given expression is equal to :
-4r -2r + 5
Now combine the like terms to get the equivalent expression we have,
Like terms of the given expression -4r -2r + 5 are -4r and -2r
( -4r -2r) +5
= -r (4+2) +5
= -6r +5
Equivalent expression of the given expression -4r -2r + 5 is -6r +5.
Therefore, after combining the like terms of the given expression -4r -2r + 5 the equivalent expression is -6r +5.
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If g(x) = 4x + 3 and h(x) = 2x + 5, find g(h(x)) and g(h(0)).
(Show your work here)
Pls helppp I’d rly appreciate it!
Answers
Answer:
(4x + 3)(2x + 5)
4x(2x + 5) +3(2x + 5)
8x^2 +20x +6x + 15
8x^2 +26x + 15
so, g(h(x))=8x^2 +26x +15
again
(4x + 3)(2x +5).0
0
so, g(h(0))=0
m(x) = 4x + 15 m(x) needs to be 7 x =
Answers
Answer:
x = -2
Step-by-step explanation:
If m(x) = 4x + 15 and m(x) = 7, the we can substitute and get the equation:
4x + 15 = 7
x = -2
Find f(0) and find one value of x for which f(x)=-3
Answers
given the graph
the point f(0) (x=0) is given at y=-4
then
f(0)= - 4
the point f(x) = -3 (y=-3) is given when x = -1
then
the value of x for which f(x)=-3: -1