The best representation of the preferences of all the students at her school will be 80 students.
What is probability?Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
The good maximum sample size is usually around 10% of the population, as long as this does not exceed 1000.
The sample size will be calculated as:-
= 10 % of 800
= 800 x 0.1 = 80 students
Therefore the best representation of the preferences of all the students at her school will be 80 students.
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Round your answer to the nearest hundredth.
Answer:
38.6598 ° or 38.66 °
Step-by-step explanation:
Sides:
a = 4 cm
b = 6.40312 cm
c = 5 cm
Angles:
A = 38.6598 °
B = 90 °
C = 51.3402 °
Other:
P = 15.4031 cm
s = 7.70156 cm
K = 10 cm2
r = 1.29844 cm
R = 3.20156 cm
Agenda:
A = angle A
B = angle B
C = angle C
a = side a
b = side b
c = side c
P = perimeter
s = semi-perimeter
K = area
r = radius of inscribed circle
R = radius of circumscribed circle
sarah can make 3/5 of a necklace in 15 minutes. At this rate, how many necklaces, to the nearest tenth of a necklace, can sarah make in 1 hour?
ANSWER ASSAP PLSSSSSSSSSS
Answer:
She can make 2 2/5 necklace in one hour
Step-by-step explanation:
60/15=4 so she makes 3/5*4=12/5=2 2/5
Find f(-3) for the function: f(x)= -2x^2+5x+7 show steps
Answer:
f(-3) = -26
Step-by-step explanation:
To find the answer plug -3 in for every x in the equation. Like this:
[tex]-2(-3)^{2} +5(-3)+7[/tex]
Now, simplify:
-2(9) - 15 + 7 Square -3.
-18 - 15 + 7 Multiply -2 by 9.
-26 Simplify.
So, f(-3) = -26.
Hope this helps! If you have any questions feel free to leave them in the comments!
Answer:
Step-by-step explanation:
f(-3)= -2(-3)^2 + 5(-3) + 7
-2(9) - 15 + 7
-18 - 15 + 7
-33 + 7 = -26
The radius of a circle is 18 miles. What is the circle's circumference?
Use 3.14 for .
radius= 18 miles
to find:the circumference of the circle.
solution:[tex]c = 2\pi \: r[/tex]
[tex]c = 2 \times 3.14 \times 18[/tex]
[tex]c = 113.04[/tex]
[tex]c = 113\: miles[/tex]
hence, the circumference of the circle is 113 miles.
Find the slope and the y-intercept of the line.
5x + 8y = 31
Step-by-step explanation:
1.) Move the 5 to the other side of the equation
8y = -5x + 31
2.)
Divide by 8
y= .625x + 3.8
Answer:
5x + 8y = 31
8y = -5x + 31
y = -0,625x + 3,875
y = mx + b
m = slope
b = intercept
y = -0,625x + 3,875
slope = -0,625
intercept = 3,875
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER. What is m<2.
Answer:
32
Step-by-step explanation:
because it 's a antiparallelogram so 3=2, 1=32
Help me please
Use the Distributive Property. Fill in each blank to complete the expansion
(x + y)(x - y)= _____2-_____+______-________^2 =______^2 - 2
Find the length of side a in simplest radical form with a rational denominator.
Answer:
x = 5.5
Step-by-step explanation:
Using a trig ratio, you can use sin, which is opposite over hypotenuse. [tex]sin(30)\textdegree=\frac{x}{11}[/tex]
Now, multiply both sides by 11
[tex]11\cdot sin(30)\textdegree=x[/tex]
this simplifies to x = [tex]\frac{11}{2}[/tex] or 5.5.
Since sin30 is [tex]\frac{\pi}{6}[/tex] radians, it can be written as [tex]\frac{11\pi}{6}[/tex].
What is the definition of a narrator?
A. The person who reads the story
B. The person who says all the dialogue
C. The person who writes the story
D. The person who tells the story
Answer:
D. The person who tells the story
Step-by-step explanation:
The narrator is the person telling the story, or the voice that an author takes on to tell a story.
The person who reads the story is simply a reader. They aren't narrating.
Someone who says all of the dialouge isn't a narrator either, because only saying the dialouge excludes the rest of the story. It's not telling the story.
The person who writes the story is the author, not the narrator.
Therefore, option D makes the most sense.
hope this helps!
The radius of a cylindrical gift box is (3x + 2) inches. The height of the gift box is twice the radius. What is the surface area of the cylinder?
The radius of a cylindrical gift box is (3x+2) inches. The height of the gift box is twice the radius. The surface area of the cylinder is 54πx² + 84πx + 32π square inches.
What is the surface area of a cylinder?The surface area of a cylinder is given as:
2πr(r + h)
The radius of a cylindrical gift box is (3x+2) inches. The height of the gift box is twice the radius.
We need to find the surface area of the cylinder.
The radius of a cylindrical gift box is (3x+2) inches.
The height of the gift box is twice the radius = 2(3x + 2) inches
= 6x + 4 inches
The surface area of the cylinder is:
= 2 × π × (3x + 2)( 3x + 2 + 6x + 4) square inches
= 2 × π × (3x + 2)(9x + 8) square inches
= 6πx + 4π( 9x + 8) square inches
= 6πx (9x + 8) + 4π( 9x + 8) square inches
= 54πx² + 48πx + 36πx + 32π square inches
= 54πx² + 84πx + 32π square inches
Hence, The surface area of the cylinder is 54πx² + 84πx + 32π square inches.
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frank bought 6 pens and 3 highlighters in the school store and paid 21$ for the whole purchase. his friend andy paid 19$ for 2 pens and 4 highlighters. if all pens cost the same and all highlighters cost the same what is the price of one pen?
HELP ASAP
The price of one pen is $1.50.
What are the linear equations?6p + 3h = 21 equation 1
2p + 4h = 19 equation 2
Where:
p = number of pens h = number of highlightersWhat is the price of one pen?In order to determine the price of one pen, take the following steps:
Multiply equation 1 by 4 and equation 2 by 3
24p + 12h = 84 equation 3
6p + 12h = 57 equation 4
Subtract equation 4 from 3
27 = 18p
p = $1.50
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The tree diagram represents an
experiment consisting of two trials.
P(D) = [? ]
Answer:
9 over 11 plus 8 over 12 = 2.7
i need to know what 8 divided by 1 4/5
HELPP!!!!!!!!!!!
Match the word with the definition. You CAN use your Notes!
Question 1 options:
Practical Range
Domain
Function Notation
Vertical Line Test
Range
Practical Domain
Relation
Function
1.
A mapping from a set of inputs to a set of outputs
2.
Set of allowable inputs (usually x-values)
3.
Set of allowable outputs (usually y-values)
4.
A relation in which every element of the domain is assigned to exactly one element of the range
5.
If two points of a graph lie on ANY vertical line, the graph is NOT a function
6.
A function equation written so that the output variable (y) is replaced with the function’s name and the input variable
7.
The set of REALISTIC inputs
8.
The set of REALISTIC outputs
Answers:
RelationDomainRangeFunctionVertical Line TestFunction NotationPractical DomainPractical Range===========================================================
Explanation:
A relation is basically anything where we connect one variable to another. Usually there are math operations involved to have a predictable rule. For example, y = x+5 says "add 5 to the x input to get the y output". But we won't always have a rule like this to connect x and y.The domain is the set of allowed inputs (x values). For example, if we had the function y = 1/x, then we can plug in anything but x = 0. This is to avoid a division by zero error.The range is the set of allowed output y values. You can use a graph to determine the range, or find the domain of the inverse (assuming one exists).This is basically saying each input goes to exactly one output only. If such a thing happens, then the relation is a function.A visual way to test if you have a function is to use the vertical line test. If you can pass a vertical line through more than one point, then it is said to have failed the vertical line test and we don't have a function. Failing the vertical line test shows that a particular x value leads to multiple y outputs.Function notation is when we replace y with something like f(x) so the function name is a bit more descriptive.Let's say we had the function f(x) = 100/x. The x represents the number of people, and f(x) is the average cost per person. Before I mentioned that the domain is anything but 0, to avoid a division by zero error. Realistically, we also would make x the set of positive whole numbers (1,2,3,4,...) since x is the number of people. This is one example where a theoretical domain shrinks down to a more practical one. Since the domain shrinks in problem 7, the range is likely to shrink as well. Use a graph or table to see why this happens.14
Select the correct answer from each drop-down menu.
Given: AOB~ XEOF
Prove:
BOC~ DOE
A
B
E
F
Complete the proof.
Suppose that BOC# *DOE
. By the vertical angles theorem,
. By the transitive property,
◆, which contradicts the given. Therefore, XBOC DOE
and
, and
Using the vertical angles theorem and the transitive property, we have proven that ∠BOC ≅ ∠DOE as shown below.
Geometry
From the question, we are to prove that ∠BOC ≅ ∠DOE
We are given that
∠AOB ≅ ∠EOF
By vertical angles theorem, we can observe that
∠AOB ≅ ∠DOE and ∠BOC ≅ ∠EOF
Then,
By the transitive property
∠AOB ≅ ∠BOC and ∠EOF ≅ ∠DOE
Therefore, ∠BOC ≅ ∠DOE
Hence, the two angles are equal as proven above.
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Here are the answers -
Vert angl theorem: angle AOB is congruent to angle DOE
and: angle BOC is congruent to angle EOF
Transitive Prop: angle EOF is not congruent to angle DOE
and: angle AOB is not congruent to angle EOF
Cheers!
If a rectangle has a length of 10 units and an area of 50 units?, what is its perimeter?
60 units
15 units
30 units
Answer- The perimeter should be 30 units
Answer:
30 units
Step-by-step explanation:
a = bh
h = a/b
h = 50/10
h = 5
5(2) + 10(2)
10 + 20
30
i need help 7th grade math
Answer: 216
Step-by-step explanation:
5/4 = 120/x
cross multiply
480 = 5x
divide 480 by 5
x = 96
there are 96 women
96+120 = 216
The total number of people is 216
Determine whether points are parallel perpendicular or neither
Answer: paralell
Step-by-step explanation: addion
Answer:
a) neither because both of the lines dont have the same slope. there isnt a line is equal to x= (some value)
1-3/1--1= -1
2--3/2-1= 5
b) parallel
8-2/-4--6= 3
2--4/2-0= 3
Which classification best describes figure ABCD below?
A. rhombus
B. quadrilateral
C. trapezoid
D. parallelogram
Answer:
Parralelogram
Step-by-step:
Both of the shapes sides are parrallel to the shapes opposite sides, if you need you can look at images of a parralelogram
please give brainliest (:
Answer: D. Parallelogram
Step-by-step explanation:
Both pairs of opposite sides are parallel.
Both pairs of opposite sides are congruent.
Both pairs of opposite angles are congruent.
Diagonals bisect each other.
One angle is supplementary to both consecutive angles (same-side interior)
help me pls and stop deleting questionssss
Answer:
ok 11.5
Step-by-step explanation:
ok
Answer:11.5
Step-by-step explanation:
What is the fifteenth term of the sequence
5,-10,20,-40,80,...?
1)-163 840
2)-81.920
3)81,920
4)327.680
Answer:
81920.
Step-by-step explanation:
1) the ration of the given sequence is -2=-10/5=20/(-10)...
2) the 15th term can be calculated according to the formula:
a₁₅=a₁*(ratio)¹⁴, then
a₁₅=5*(-2)¹⁴=-5*1024*16=81920.
DO Tuesday Write 1,003,498 in each form. Word: Expanded: need help really please
word form: one million, three thousand, four hundred ninety eight
number form : 1,003,498
expaned form 1000000 + 30000 + 400 + 90 + 8
i would so base form but i cant
Hhhhhhhhhhhhhhhhhhhhhhhhhhhh
Answer:
Abd
Step-by-step explanation:
upright
up
as the height increase the weight also does
help me pleeeeaseeeeeeeeeeeeeeeeeee
Step-by-step explanation:
just fill in the individual definitions and then do the fraction calculation.
c - 3x
-7/10 - 3×2/5 = -7/10 - 6/5 = -7/10 - 12/10 = -19/10
What are the coordinates of A'and B'when AB is reflected in the y-axis? Show your work or explain
how you got your answer.
The coordinates of A'and B'when AB is reflected in the y-axis are; (-2,5) and (-6,3).
What are the coordinates of A'and B'when AB is reflected in the y-axis?According to the task content, it follows that the reflected points A' and B's coordinates are required.
From the graph, the coordinates of A= (2,5) and B= (6,3).
On this note, the coordinates of A' and B' upon reflection over the y-axis is; (-2,5) and (-6,3) respectively.
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Evan saves 7 dollars each week. let d represents the total amount of money in dollars Evan saves after w weeks.
Determine if the expression - x^3 y^5 / 3 is a polynomial or not. If it is a polynomial, state the type and degree of the polynomial.
The given expression _____ a polynomial.
Answer:
it is not a polynomial it has no degree either .. and we only classify polynomials in accordance with their degrees
when is buying a house better than ranting
Answer:
Buying a home allows you to build wealth over time.
Step-by-step explanation:
no other asset can build your wealth more consistently. When you rent, you are building your landlord's wealth, and not your own. Combined with leverage, real estate appreciation can offer big returns
What is the length of one side cube?
Answer:
Step-by-step explanation:
1 unit
A bag contains 4 red balls, 2 green balls, 3 yellow balls, and 5 blue balls. Find each probability for randomly removing balls with
replacement.
Removing a yellow, a red, a green, and a blue ball =
Removing a blue, a green, a green, and a yellow ball =
Removing a red, a red, a yellow, and a yellow ball =
Removing a green, a yellow, a yellow, and a red ball =
Answer:
[tex]\frac{15}{4802}[/tex], [tex]\frac{15}{9604}[/tex], [tex]\frac{9}{2401}[/tex], [tex]\frac{9}{4802}[/tex]
Step-by-step explanation:
The bag has a total of (4+2+3+5) = 14 balls. Set up the proportions:
Red: [tex]\frac{4}{14}[/tex]
green: [tex]\frac{2}{14}[/tex]
yellow: [tex]\frac{3}{14}[/tex]
blue: [tex]\frac{5}{14}[/tex]
Now solve!
Removing 1 yellow, 1 red, 1 green, and 1 blue = [tex]\frac{3}{14} \cdot \frac{4}{14} \cdot \frac{2}{14} \cdot \frac{5}{14} =\frac{15}{4802}[/tex]
Removing 1 blue, 1 green, 1 green, and 1 yellow = [tex]\frac{5}{14} \cdot \frac{2}{14} \cdot \frac{2}{14} \cdot \frac{3}{14} =\frac{15}{9604}[/tex]
Removing 1 red, 1 red, 1 yellow, and 1 yellow = [tex]\frac{4}{14} \cdot \frac{4}{14} \cdot \frac{3}{14} \cdot \frac{3}{14} =\frac{9}{2401}[/tex]
Removing 1 green, 1 yellow, 1 yellow, and 1 red = [tex]\frac{2}{14} \cdot \frac{3}{14} \cdot \frac{3}{14} \cdot \frac{4}{14} =\frac{9}{4802}[/tex]
