Answer:
When I used a cylinder calculator I got 6785.84 yd^3
Step-by-step explanation:
if the area of a sector is 15pi square cm and the radius is 5cm find the measure of the central angle
Given:
Area of a sector = [tex]15\pi[/tex]
Radius = 5 cm
To find:
The central angle.
Solution:
The area of a sector is:
[tex]A=\dfrac{1}{2}r^2\theta[/tex]
Where, r is the radius and [tex]\theta[/tex] is the central angle in radians.
Putting [tex]A=15\pi, r=5[/tex] in the above formula, we get
[tex]15\pi=\dfrac{1}{2}(5)^2\theta[/tex]
Multiply both sides by 2.
[tex]30\pi=25\theta[/tex]
Divide both sides by 25.
[tex]\dfrac{30\pi}{25}=\theta[/tex]
[tex]\dfrac{6\pi}{5}=\theta[/tex]
Therefore, the central angle in radians is [tex]\theta=\dfrac{6\pi}{5}[/tex].
The force,
F
(Newtons), between two objects is inversely proportional to the square of the distance,
d
(metres), between them.
The force is 0.045 Newtons when the distance between the objects is 2.4 metres.
Work out
d
(rounded to 2 DP) when
F
=
0.7
Newtons.
The value of d when F = 0.7 Newton's by solving with inverse variation is 0.61 meters to 2 D.P
How to find inverse variation?Let
F = force in Newton'sd = distance in metersF = k/ d²
Where k = constant of proportionality
If F = 0.045 Newtons and d = 2.4 metres
F = k/ d²
0.045 = k / 2.4²
cross product
k = 0.045 × 2.4²
k = 0.2592
Find d when F = 0.7 Newton's
F = k/ d²
0.7 = 0.2592 / d²
cross product
0.7 × d² = 0.2592
0.7d² = 0.2592
divide both sides by 0.7
d² = 0.2592 / 0.7
d² = 0.370285714285714
find the square root of both sides
d = √0.370285714285714
d = 0.6085110634045
d = 0.61 to 2 decimal place.
Therefore, d is equal to 0.61 meters to 2 decimal place if F is 0.7 Newton's.
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what is the value of x?
Answer:
43
Step-by-step explanation:
Sum of any two intieior angles in a triangle equal to the opposite exterior angle. (Therom)
So the interior angle opposite to 80 is also 80
Then
123 - 80 =43
Spiral Review
99
15. Roberto paid $35. 75 for dinner at a restaurant, plus an additional $7. 15
tip. What percent of the bill did he pay as a tip? Round to the nearest
percent, if necessary.
Roberto paid 16.7% of the bill as a tip.
To find the percent of the bill Roberto paid as a tip, you can use the formula: (tip / total bill) x 100 = tip percentage
In this case, the tip was $7.15 and the total bill was $35.75 + $7.15 = $42.90. We know the formula to calculate percentage share of an item to total items.
Plugging these values into the formula:
(7.15 / 42.90) x 100 = 16.7 %
Roberto paid 16.7% of the bill as a tip, rounded to the nearest percent.
Thus, we know Roberto paid 16.7% of the bill as a tip.
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Find the numbers. A room is 12 feet longer than it is wide. Half the perimeter of the rectangular floor is 72 feet. Find the length and the width. Use elimination or substitution to solve this problem.
Answer: The width of the room is 36 feet and the length of the room is 48 feet.
Step-by-step explanation:
To solve this problem using elimination, you can set up a system of equations to represent the information given in the problem.
Let w be the width of the room, and let l be the length of the room. We are told that the length of the room is 12 feet longer than its width, so we can set up the equation:
l = w + 12
We are also told that half the perimeter of the rectangular floor is 72 feet. The perimeter of a rectangle is given by the formula:
Perimeter = 2 * (length + width)
Since half the perimeter is 72 feet, the full perimeter is 2 * 72 = 144 feet. Substituting the equation for the length of the room, we get:
144 = 2 * (w + 12 + w)
Combining like terms and solving for w, we get:
w = 36
Substituting this value back into the equation for the length of the room, we get:
l = 36 + 12 = 48
Therefore, the width of the room is 36 feet and the length of the room is 48 feet.
To solve this problem using substitution, we could start by solving for the width of the room in one of the equations, and then substituting that value into the other equation to solve for the length of the room.
For example, we could solve the equation l = w + 12 for w to get:
w = l - 12
Substituting this expression for w into the equation for the perimeter, we get:
144 = 2 * (l - 12 + l)
Combining like terms and solving for l, we get:
l = 48
Substituting this value back into the equation for the width of the room, we get:
w = 48 - 12 = 36
Therefore, the width of the room is 36 feet and the length of the room is 48 feet.
400 families were surveyed. It was found that 90% had a TV set and 60% had a computer. Every family had at least one of these items. One of these families is randomly selected, and it is found that it has a computer. Find the probability that it also has a TV set.
A random selection of one of the families is made, and a computer is discovered there. P(computer AND TV) = 5/6.
How to find the Calculation?We surveyed 400 households. 60% of people had computers, while 90% of them had TVs.
These were something that every family owned at least one of.
A random selection of one of the families is made, and a computer is discovered there.
Check to see if there is a TV there as well.
union: # with computer, # with TV, - # with both, # with both
400 = 360 + 240 - # with both # with both = 200 / 400 = 0.9 * 400 + 0.6 * 400
P(computer AND TV) = 200/400 = 1/2 ——-
P(TV | computer) + P(TV and computer) / P(computer) = 0.5/0.6 = 5/6
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GIVING BRAINLIEST AND MANY POINTS FOR ANSWER I BEG PLEASE PLEASE
1. Use the Distributive Property to simplify the expression.
6(5 - q)
Group of answer choices
11 - 6q
11 - q
30 - 6q
1 - q
Answer:
C) 30 - 6q--------------------------
Distributive Property is:
a(b + c) = ab + acApply it to the given expression:
6(5 - q) = 6*5 - 6*q = 30 - 6qThe matching choice is C.
Answer:
[tex] \sf \: c) \: 30 - 6q[/tex]
Step-by-step explanation:
Given expression,
→ 6(5 - q)
Let's simplify the expression,
→ 6(5 - q)
→ 6(5) - 6(q)
→ (6 × 5) - (6 × q)
→ (30) - (6q)
→ 30 - 6q
Hence, option (c) is correct.
A woman looking out from the window of a height 30m, observed that the angle of depression of the top of a flagpole was 44°. if the foot of the pole is 25m from the foot of the building and on the same horizontal ground, find, correct to the nearest whole number, the angle of depression of the foot of the pole from the woman
Answer:
here is your answer = 56.7m
The quadrilaterals ABCD and JKLM are similar.
Find the length x of JK.
B
K
A
U
S
3. 5
2. 1
3
M
2. 1 L
D
3
c
X
0
X 5 ?
The length x of JK is 3.6 units
Here, quadrilaterals ABCD and JKLM are similar.
We know that the corresponding sides of similar triangles are in proportion.
So, by definition of similar triangles,
AB/JK = BC/KL = CD/LM = AD/JM
To find: the length x of JK
So, consider an equation
AB/JK = AD/JM
Substitute the length of each side in above equation.
4/x = 2/1.8
(4 × 1.8)/x = 2
(4 × 1.8)/2 = x
x = 2 × 1.8
x = 3.6
Therefore, the length of JK = 3.6 units
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. Mr. Johannsen has a farm with 3 cows, 8 chickens, and some ducks. If the total number of farm animal legs is 40, how many ducks does Mr. Johannsen have on his farm
The number of ducks on the farm is 12 legs / 2 legs/duck = 6 ducks.
To determine this:
Each cow has 4 legs, so the cows have 3 cows * 4 legs/cow = 12 legs.
Each chicken has 2 legs, so the chickens have 8 chickens * 2 legs/chicken = 16 legs.
We know the total number of farm animal legs is 40 legs.
So the number of duck legs can be calculated by subtracting the number of cow legs and chicken legs from the total number of farm animal legs: 40 legs - 12 legs - 16 legs = 12 legs.
Since each duck has 2 legs, the number of ducks on the farm is 12 legs / 2 legs/duck = 6 ducks.
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What do the following two equations represent? y+1= -4(x - 2) 2x8y = 16
On solving the provided question, we can say that the values of the equation here will be y +1 = 8X 8y = 16 => y = 9.455
What is equation?An equation is a formula in mathematics that joins two statements with the equal symbol = to represent equality. The definition of an equation in algebra is a mathematical statement proving the equality of two mathematical expressions. In the equation 3x + 5 = 14, for instance, the terms 3x + 5 and 14 are separated by an equal sign. The link between two phrases on either side of a letter is expressed mathematically. There is often only one variable, which is also the symbol. instance: 2x - 4 Equals 2.
y+1= -4(x - 2) 2x8y = 16
x = 0
y +1 = 8X 8y = 16
y = 9.455
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helpppppppppppppppppppp
Given:
A rectangle with sides 40 and 25.
A circle with radius 8 inside the rectangle.
The area of circle is unshaded.
To find:
The probability that a point (randomly selected) will lie in the unshaded region.
Solution:
The area of the rectangle is:
[tex]A_1=Length\times Width[/tex]
[tex]A_1=40\times 25[/tex]
[tex]A_1=1000[/tex]
The area of the circle is:
[tex]A_2=\pi r^2[/tex]
Where, r is the radius.
[tex]A_2=\pi (8)^2[/tex]
[tex]A_2=\pi (64)[/tex]
[tex]A_2=64\pi[/tex]
[tex]A_2\approx 201.06[/tex]
The probability that a point (randomly selected) will lie in the unshaded region is:
[tex]\text{Probability}=\dfrac{\text{Unshaded region}}{\text{Total region}}[/tex]
[tex]\text{Probability}=\dfrac{A_2}{A_1}[/tex]
[tex]\text{Probability}=\dfrac{201.06}{1000}[/tex]
[tex]\text{Probability}=0.20106[/tex]
Therefore, the required probability is 0.20106.
•40 POINTS• don’t explain.
Answer:
ASA-------------------------
We can see two angles marked as same, one of them is a right angle.
The included vertical side is common to both triangles so is a congruent side.
Since we have congruence of two angles and the included side, it is Angle-Side-Angle or ASA.
Where is the graph of inequality 2x 3y 6 lies?
The graph of the inequality 2x+3y>6 is a half-plane the neither contains origin nor the points of the the line 2x+3y=6.
A linear inequality is a mathematical statement involving a linear function and one of the symbols <, >, ≤, or ≥. It represents a range of values for the variables that satisfy the inequality. The solution to a linear inequality is the set of all points that make the inequality true. These points form a region in the coordinate plane, which is known as the solution set. The solution set can be represented graphically as a half-plane, a line, or a combination of lines and half-planes, depending on the inequality.
The graph of the inequality 2x+3y>6 is the set of all points (x,y) that satisfies the inequality 2x+3y>6. It can be represented by a line 2x+3y=6 and all the points on one side of the line. This side is determined by the inequality sign ( > in this case).The side is away from the origin and the line 2x+3y=6 is the boundary line, and all the points on one side of the line satisfy the inequality while all the points on the other side do not.
The line 2x+3y=6's origin and its points are not present on the half-plane that represents the inequality 2x+3y>6.
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True or False: Surface area is the combined area for all of the surfaces of a 3D shape.
A. False
B. True
Answer:
A.
Step-by-step explanation:
It's false
A frosting is made of cream cheese and powdered sugar in
the ratio 3:2. If you use 120g of cream cheese, how much
powdered sugar should you use?
Plz help
Answer:
80g
Step-by-step explanation:
Answer:
80g
Step-by-step explanation:
80g
what is the perimeter of the triangle?
Answer:
Step-by-step explanation:
8,15,15 너 도넛
How could this be solved
On solving the provided question, we can say that - area of the following cylinder is [tex]2\pi rh + 2\pi r^2 = > 2 * 3.14 *3*2 + 2 *3.14*2*2 = > 62.8[/tex]
what is cylinder?One of the most fundamental curved geometric forms is the cylinder, which is often a three-dimensional solid. It is referred to as a prism with a circle as its base in elementary geometry. Several contemporary fields of geometry and topology also define a cylinder as an indefinitely curved surface. A three-dimensional object known as a "cylinder" consists of curving surfaces with circular tops and bottoms. A cylinder is a three-dimensional solid figure that has two bases that are both identical circles joined by a curving surface at the height of the cylinder, which is determined by the distance between the bases from the center. Examples of cylinders are cold beverage cans and toilet paper wicks.
r=3
and h= 2
area =
[tex]2\pi rh + 2\pi r^2\\\\2 * 3.14 *3*2 + 2 *3.14*2*2\\62.8[/tex]
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Simplify 4.5km:90m
.
Answer:
1km=1000m
so 4.5(1000m)/90m
4500m/90m,we eliminate meter by meter
,4500/90=50
Answer:
50
Step-by-step explanation:
1km = 1000 m
4.5 * 1000 = 4500 m
4500/90 = 50/1 = 50 m
-2x < -6
Hi, can someone please explain this question?
The answer is x > 3 but i do not know how.
Please explain
Answer:
Ans is x<3
Step-by-step explanation:
➜-2x<-6
Multiply (-) on both sides➜2x<6
Divide both sides by 2➜2x/2<6/2
➜x<3
Solve the system of equations.
y = 3x
y=x²-4
A. (-1, -3) and (4, 12)
O B. (-4, 12) and (1, -3)
C. (-1, 3) and (4, -12)
OD. (-4,-12) and (1, 3)
Answer:
A
Step-by-step explanation:
Se them equal to each other
3x = [tex]x^{2}[/tex] - 4
[tex]x^{2}[/tex] -3x -4 = 0
(x + 1) ( x -4)
x + 1 = 0
x = -1
y = 3x
y = 3(-1)
y = -3
(-1,-3)
x - 4 = 0
x = 4
y = 3x
y = 3(4)
y = 12
(4, 12)
The volume of a cylinder is 81n in. 3 and the height of the cylinder is 1 in. What is the radius of the cylinder?
Answer:
R=9
Step-by-step explanation:
if the chosen significance level is α = 0.05, then ____________________________________________. A) there is a 5% probability of rejecting a true null hypothesis
B) there is a 5% probability of accepting a true null hypothesis
C) there is a 5% probability of rejecting a false null hypothesis
D) there is a 5% probability of accepting a false null hypothesis
C) there is a 5% probability of rejecting a false null hypothesis
Simply put, probability is the likelihood that something will occur.
When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.
Testing hypotheses is a crucial component of empirical research and evidence-based medicine. A well-developed hypothesis is only half the solution to the research problem. Working understanding of fundamental statistical principles is preferred for this, as well as subject-specific knowledge gleaned through a thorough survey of the literature.
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Can someone Help me please
Answer:
Step-by-step explanation:
e
Answer:
B
Step-by-step explanation:
Natalie needs the number of tulips to be at least twice the number of lilies. 8 is more than double 3.
And 8 + 3 is less than 12 so it fits both requirements.
What is a no solution answer?
If cost of 15 eggs is ? 75, then find out the cost of 4 dozens eggs.
Answer:
360
Step-by-step explanation:
15+75 equal 90
so 90+90+90+90 equal 360
help fast it is due soon
Answer:
1/81/21/201/161282016Answer:
1.) [tex]\frac{1}{2}[/tex] ÷ 4 = [tex]\frac{1}{8}[/tex]
2.) [tex]\frac{1}{3}[/tex] ÷ 4 = [tex]\frac{1}{12}[/tex]
3.) [tex]\frac{1}{4}[/tex] ÷ 5 = [tex]\frac{1}{20}[/tex]
4.) [tex]\frac{1}{4}[/tex] ÷ 4 = [tex]\frac{1}{16}[/tex]
5.) 3 ÷ [tex]\frac{1}{4}[/tex] = 12
6.) 4 ÷ [tex]\frac{1}{2}[/tex] = 8
7.) 5 ÷ [tex]\frac{1}{4}[/tex] = 20
8.) 4 ÷ [tex]\frac{1}{4}[/tex] = 16
Hope this helps!
Peter owns a total of one hundred and forty four prized baseball cards. If he were to add 7 more American League players and three more national league players, his collection of American to national would be in a ratio of nine five. Find out how many cards of each league he has currently.
Answer:
24
Step-by-step explanation:
I need help with one problem quick its due next hour show WORK. NO links
x + 3 = 5
Step-by-step explanation:
x + 3 = 5
x=5-3
×=2
Therefore the answer is x=2
Determine which branch of statistics was used to make the following statement. In an online survey of 500 Virginia Tech students between spring 2010 and spring 2011, 3190 said that they had missed class because of alcohol consumption. A) differential statistics C) inferential statistics B) time series statistics D) descriptive statistics
The branch of statistics used to make the given statement is Option(D) Descriptive Statistics.
Which are the different branches of statistics?
The area of mathematics that deals with data is statistics. Data collection, descriptive statistics, and inferential statistics are the three main subfields of statistics.
The process of gathering data is what data collection is all about.The area of statistics known as descriptive statistics deals with how we present the data we have. Basically, this can be done in one of two ways: either visually (using graphs, charts, etc.) or quantitatively (via averages and so on).The part of statistics that deals with drawing inferences from the data is called inferential statistics.For the given question, we are presented with data quantitatively. The data shows out of 500 students, 31% missed class due to alcohol consumption.
Therefore the branch of statistics that was used to make the above statement is descriptive statistics.
Hence Option(d) is correct.
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