Answer:
In mathematics, the notion of permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting. These differ from combinations, which are selections of some members of a set where order is disregarded.
Step-by-step explanation:
PLEASE HELP!!
If the circle graph below represents the responses from 350 people, how many people chose silver as their favorite car color?
Black-25%
White-10%
Silver-10%
Yellow-5%
Red-50%
350
10
35
100
For this you have to make two proportions that are [tex]\frac{part}{whole}[/tex] and set them equal to each other.
The first proportion represents the percent of people who like silver as their favorite car color
Since this is a circle graph the whole will always be 100 because percents are always taken out of 100
The part would be 10 because only 10% out of the 100% like silver
The second proportion is the people that represent the response.
350 would be the whole because that is the total amount of people surveyed
The part is unknown and what you are solving for.
Here is how the proportion should look like:
[tex]\frac{10}{100} = \frac{x}{350}[/tex]
Cross multiply (If you don't know what this is look at the image below to see my work)
The cross multiplication will give you:
3500 = 100x
Isolate x by dividing 100 to both sides
3500/100 = 100x/100
35 = x
This means that 35 people out of the 350 surveyed like silver cars
Hope this helped!
Answer:
If the circle graph below represents the responses from 350 people, how many people chose silver as their favorite car color?
100
35
10
350
Step-by-step explanation:
D. is right plz put me Brainliest plz
The definition of a circle uses what undefined term
Answer:
The definition of a circle uses the undefined term is plane then the undefined term can contain parallel lines is plane and. The definition of an angle uses the undefined term is point likewise there are 3 possible geometry will fall.
Hope I helped
Step-by-step explanation:
X represents the # of trees. Y represents the height. How many 150
Answers
105
50
30
80
Answer: 30
Step-by-step explanation:
Given FGE, find m=HFE if m=G - 65°
A. 25°
B. 50°
C. 60°
D. 65°
Answer:
The correct answer is option A. 25°
Step-by-step explanation:
From the figure we can see an isosceles triangle. FGE
<G = 65° (given)
m<G = m<E = 65°
To find the value of m<HFE
Consider the triangle FHE in the figure we get,
m<E + m<HFE + m<FHE = 180
m<HFE = 180 - (m<E + m<FHE)
= 180 - (65 + 90) = 25°
Therefore m<HFE = 25°
The correct answer is option A. 25°
The correct answer is option A. 25°
Which set of the side lenths form a right triangle?
Answer:
15m, 20m, 25mStep-by-step explanation:
If for x ≤ y < z
x² + y² = z²
then x, y and z form a right triangle.
1 .
15m, 20m, 25m
15² + 20² = 225 + 400 = 625
25² = 625
CORRECT :)
2.
3ft, 6ft, 5ft
3² + 5² = 9 + 25 = 34
6² = 36
34 ≠ 36
3.
10in, 41in, 40in
10² + 40² = 100 + 1600 = 1700
41² = 1681
1700 ≠ 1681
4.
7cm, 8cm, 10cm
7² + 8² = 49 + 64 = 113
10² = 100
113 ≠ 100
The following set of coordinates represent which figure?(7,10) (4,7) (6,5) (9,8)
Answer: i think a diamond
Step-by-step explanation:
Let's assume these are the vertices in order and calculated the squared lengths of the sides. Let's calculate the vector for each side, which is the difference of the endpoints:
(7,10) - (4,7) = (3, 3)
(4,7) - (6,5) =(-2, 2)
(6,5) - (9,8) = (-3, -3)
(9,8) - (7,10) = (2, -2)
We see the pattern: (3,3) = -(-3,-3) and (-2,2) = -(2,-2)
We have two pairs of opposite vectors so we have a parallelogram.
Let's check the dot product of adjacent sides:
(3,3) . (-2, 2) = 3(-2) + 3(2) = 0
Zero dot product, we have perpendicularity. A parallelogram with one right angle is a
Answer: Rectangle
The adjacent sides are clearly not congruent so it's not a square
.
7. length of a soccer field
is it meters or kilometers
Answer:
The answer would be Meters.
Step-by-step explanation:
The length of the soccer field is measured in Meters.
There are units to measure everything. Like length is measured in units of millimeter, centimeter, meter, kilometer etc, weight is measured in milligram, gram, kilogram, etc, height is measured in inches, feet, etc.
A soccer field is the ground on which soccer is played. This field is measured in meters. The soccer field has different dimensions. There are standard touch lines, goal lines. Touch lines and goal lines dimensions are different for international play. These lines or dimensions are measured in meters.
WILL MARK BRAINLIEST!
If the circle graph represents the responses from 500 people, how many more people prefer burgers than cheeseburgers?
subs-10%
Tacos-10%
Chicken-10%
Pizza-30%
burger-25%
Cheeseburgers-15%
125
75
50
25
Answer:
50
Step-by-step explanation:
[tex]500 \div 100 \times 25 = 125[/tex]
[tex]500 \div 100 \times 15 = 75[/tex]
[tex]125 - 75 = 50[/tex]
50. From 500 people, 25% that prefer burger represent 125 people and 15% that prefer cheeseburger represent 75. This mean there are 50 more people that prefer burgers than cheeseburgers.
The key to solve this problem is by direct rule of three, we will place the 3 values (which we will call “a”, “b”, and “c”) and the unknown value that we want to figure out (“x”) to apply the formula:
a -----------> b
c -----------> x
[tex]x=\frac{b.c}{a}[/tex]
The circle graph represents the responses from 500 people in percentage.
To calculate the amount of people that prefer burgers:
If 100% ----------------> 500 people
25% ----------------> x
[tex]x=\frac{(500)(25)}{100}= 125[/tex] which means 125 people prefer burgers
To calculate the amount of people that prefer cheeseburgers:
If 100% ----------------> 500 people
15% ----------------> x
[tex]x=\frac{(500)(15)}{100}= 75[/tex] which means 75 people prefer cheeseburgers.
In order to know how many more people prefer burgers than cheeseburgers, let's apply the difference between people who prefer burgers and people who prefer cheeseburgers:
125 - 75 = 50 which mean 50 more people prefer burgers than cheeseburgers.
A pair of sneakers cost $75. This is $15 less than the cost of a pair of jeans. Write an equation that someone could use to find the amount of money that the jeans cost.
15+75=J.
So the jeans should be $90
Answer-
add 15 from 75 then that is it
75+15=90
Which function is increasing?
A. f(x) =(1/4) ^x
B. f(x) =(1/4) ^x
C. f(x) = 4^x
D. f(x) = (0.4)^x
Answer:
f(x) = 4^x
Step-by-step explanation:
In f(x) = (1/4)^x, 1/4 is equal to 0.25, which is less than 1, so its decreasing
In f(x) = 4^x, 4 is greater than 1, so its increasing
In f(x) = (0.4)^x, 0.4 is less than 1, so its decreasing
This is why f(x) = 4^x is the correct answer
I hope this helps!
the vector u is graphed. which of the vectors below would be orthogonal to vector u?
ANSWER
[tex]< \frac{1}{5} , - \frac{1}{3} \: >[/tex]
EXPLANATION
The given vector , u has the following components,
[tex]u = < \: - 5 , - 3 \: > [/tex]
If two vectors are orthogonal, then their dot product is zero.
[tex]< \: - 5 , - 3 \: > \bullet < \: \frac{1}{5} , - \frac{1}{3} \: > = - 5 \times \frac{1}{5} \times - 3 \times - \frac{1}{3} = - 1 + 1 = 0[/tex]
Hence,the vector
[tex] < \frac{1}{5} , - \frac{1}{3} \: >[/tex]
is orthogonal to vector u.
Write an equation for each translation of .
5.5 units right
y = | x | – 5.5
y = | x + 5.5 |
y = | x | + 5.5
y = | x – 5.5 |
Answer:
C is the answer i did this before!
Step-by-step explanation:
What are the solutions for x when y is equal to 0 in the following quadratic
function?
y = x² + 10x – 24
OA) X= -4 or x = -6
OB) x = -6 or x = 4
OC) x = -2 or x = 12
OD) x = -12 or x = 2
O E) no real solutions
Answer:
D) x = -12 or x = 2
Step-by-step explanation:
The given quadratic equation is:
[tex]y=x^2+10x-24[/tex]
When y=0, we obtain:
[tex]x^2+10x-24=0[/tex]
We split the middle term with -2, 12 because their product is is -24 and their sum is 10.
[tex]x^2-2x+12x-24=0[/tex]
We factor by grouping to obtain:
[tex]x(x-2)+12(x-2)=0[/tex]
[tex](x-2)(x+12)=0[/tex]
Either [tex](x-2)=0[/tex] or [tex](x+12)=0[/tex]
Either [tex]x=2[/tex] or [tex]x=-12[/tex]
Bradley dropped a ball from a roof 16feet high. Each time the ball hits the ground it bounces 3/5 the previous height. Find the height ball will bounce after hitting the ground the fourth time
Answer: 2.0736 ft
Step-by-step explanation:
Bounce 1: 16*3/5=9.6
Bounce 2: 9.6*3/5=5.76
Bounce 3: 5.76*3/5=3.456
Bounce 4: 3.456*3/5=2.0736
Answer:
The ball will bounce to 2.07 feet after 4th drop.
Step-by-step explanation:
Bradley dropped a ball from a roof 16 feet high. So, its the initial height.
Each time the ball hits the ground it bounces 3/5 the previous height.
Means after 1st drop, the ball will again rise to [tex]\frac{3}{5}\times16= 9.6[/tex] feet.
Similarly after 2nd drop, it will bounce to [tex]\frac{3}{5}\times9.6=5.76[/tex]
After 3rd drop, it will bounce to [tex]\frac{3}{5}\times5.76=3.456[/tex] feet
After 4th drop, it will bounce to [tex]\frac{3}{5}\times3.456=2.0736[/tex] feet
Hence, the ball will bounce to 2.07 feet after 4th drop.
Find the area of the parallelogram. Please need help very badly.
Answer:
A = bh
A = 15(8)
A = 120 square centimeters
2. Find the area and circumference of the circle to the right.
16.6 m
Answer:
AREA:
[tex]A=216.42m^2[/tex]
CIRCUMFERENCE:
[tex]C=52.15m[/tex]
Step-by-step explanation:
The formula that is used to calculate the area of a circle is:
[tex]A=\pi r^2[/tex]
Where "r" is the radius of the circle.
The formula for calculate the circumference of a circle is:
[tex]C=2\pi r[/tex]
Where "r" is the radius of the circle.
Then, you need to find the radius. This is:
[tex]r=\frac{16.6m}{2}=8.3m[/tex]
Substituting the radius, you get that the area and the circumference are:
AREA:
[tex]A=\pi (8.3m)^2=216.42m^2[/tex]
CIRCUMFERENCE:
[tex]C=2\pi (8.3m)=52.15m[/tex]
Answer with step-by-step explanation:
We are given a circle which is divided into two halves and has a diameter of 16.6 meter. We are to find the area and circumference of the circle to the right.
It means that our radius will be the half of the given diameter.
Radius = 16.6/2 = 8.3 m
Area = [tex]\pi r^2[/tex] = [tex]\frac{\pi \times (8.3)^2}{2}[/tex] = 216.4 m^2
Circumference = [tex]2 \pi r[/tex] = [tex]2 \times \pi \times 8.3[/tex] = 52.2 m
graph the line y=-3x
Answer:
Step-by-step explanation:
Graph y = -3x. Start at the origin (0, 0). Place a dark dot there. Now, starting with your pencil point on that dot, move 1 space to the right and from this new point move 3 spaces down. Place a dark dot at this new point.
Now draw a straight line through both dark dots. This is the desired graph.
Step-by-step explanation: Let's graph the equation y = -3x using its slope and y-intercept. The problem here is that our equation doesn't match up quite so well with the formula y = mx + b
Our slope or m which is represented by the coefficient of the x-term is clearly -3. However, you might be asking what is our y-intercept or b. Well, y = -3x can be thought of as y = -3x + 0. So you can now see that our b or y-intercept equals 0.
To graph the line, we start with the y-intercept. So our first point is a 0 on the y-axis and we call that point A. When the slope is a integer, you can change it to a fraction by putting it over 1. So our slope of -3 can be thought of as -3/1.
From point A, we would go down 3 units and over 1 unit to plot point B. Now we can connect points A and B like I did in the picture and we have our line.
How do you Graph 0.5x+0.8y=240
Answer:
y= 300 - 5/9x
Step-by-step explanation:
0.8y = 240 - 0.5x
divide both sides by 0.8,
y= 300 - 5/9x
-5/9 is your gradient
300 is your y-intercept
To graph 0.5x + 0.8y = 240, first arrange the equation into y = mx + b form, where m is the slope and b is the y-intercept. Finally, plot this equation on a graph using the slope and y-intercept.
Explanation:To graph the equation 0.5x + 0.8y = 240, you need to first arrange it in the form of y = mx + b (slope-intercept form), where m is the slope and b is the y-intercept.
Solving for y, we get:
0.8y = -0.5x + 240
y = -0.625x + 300
Then you can plot this equation in the format y = mx + b on a graph. Place the y-intercept at 300 on the y-axis. From there, use the slope (-0.625) to find the second point: down 0.625 units and to the right 1 unit. Repeat this step to plot a few points and then draw a line passing through them.
Learn more about Graphing Linear Equations here:https://brainly.com/question/14240165
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I need to find the volume of a nose cone.
The cylinder has a height of 6ft and a diameter of 8ft. the formula for volume is πrrh
The cone has the same dimensions. the formula is πrrh÷2.
well then, the volume of the nose cone will just be the sum of the volume of the cylinder below and the cone above.
since the diameter for both is 8, then their radius is half that, or 4.
[tex]\bf \stackrel{\textit{volume of a cone}}{V=\cfrac{\pi r^2 h}{3}}~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} r=4\\ h=6 \end{cases}\implies V=\cfrac{\pi (4)^2(6)}{3}\implies V=32\pi \\\\\\ \stackrel{\textit{volume of a cylinder}}{V=\pi r^2 h}~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} r=4\\ h=6 \end{cases}\implies V=\pi (4)^2(6)\implies V=96\pi \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{volume of the nose cone}}{32\pi +96\pi \implies 128\pi }\qquad \approx \qquad 402.12[/tex]
help me with this i suck at mathematical reasoing
Answer:
6Step-by-step explanation:
The formula of an area of a rectangle:
[tex]A_r=lw[/tex]
l - length
w - width
We have l = 12 in and w = 8 in.
Substitute:
[tex]A_r=(12)(8)=96\ in^2[/tex]
The formula of an area of a triangle:
[tex]A_t=\dfrac{bh}{2}[/tex]
b - base
h - altitutde
We have b = 32 in and A - 96 in².
Substitute:
[tex]\dfrac{32h}{2}=96[/tex]
[tex]16h=96[/tex] divide both sides by 16
[tex]h=6\ in[/tex]
Find the slope of the line whose equation is 2x - 3y + 6 = 0.
2/3
-2/3
-2
The slope would be the first one, 2/3. Hope this helps! Please mark brainliest! :) Thanks v much! :)
Answer:
2/3
Step-by-step explanation:
My paychecks gross pay came to 663.87 for the week. If 20% is taken out for taxes how much is my net pay
Answer:
Final Price: 531.10
Discount: 132.77
Step-by-step explanation:
663.87 is 100%
? is 20%
?=20•663.87/100~$132.77 taxes
Net pay= 663.87-132.77=$531.1
(Very easy) Find the surface area of this figure
The surface area of the two triangles is 12 cm^2.
3*4=12
The surface area of the bottom rectangle is 8 cm^2.
4*2=8
The surface area of the rectangle that is on the left side of the figure is 6 cm^2.
3*2=6
The surface area of the rectangle that is on the top side of the figure is 10 cm^2.
To find the third side of the triangle, use the Pythagorean theorem.
3^2+4^2=h^2
9+16=25
The third side of the triangle is 5 cm.
The surface area of the whole figure is 36 cm^2.
12+8+6+10=36
write 8.54 x 10 to the 3rd power in standard notation
Answer:
= 8.54 × 101
(scientific notation)
= 8.54e1
(scientific e notation)
= 85.4 × 100
(engineering notation)
(one)
= 85.4
(real number)
The tree diagram below shows the possible combinations of juice and snack that can be offered at the school fair.
How many different combinations are modeled by the diagram?
Answer:
B) 8
Step-by-step explanation:
To count the number of possibilities on a tree diagram, all you need to do is count the total number of "branches" at the end of the "tree". Here, that is 8. Also, if the tree gets too big, you can multiply the number of combinations in the first sector, then the second, and so on. So, that will be 4 * 2 = 8.
Answer:
B). 8
Step-by-step explanation:
i go this right on my quiz if u want proof scroll down
I really hope this helps someone! have a great day!!
Use the properties of exponents to solve for the each variable.
a=8+2=10; b=4•5=20; c=6-2=4
Answer:
a=10
b=20
c=4
Step-by-step explanation:
3.5d + 6.25 = 1 + 5.25d
The solution is d =
Answer:
d = 3
Step-by-step explanation:
3.5d + 6.25 = 1 + 5.25d
5.25d - 3.5d = 6.25 - 1
1.75d = 5.25
d = 5.25 ÷ 1.75 = 3
PLEASE HELP & SHOW WORK , ITS URGENT
it’s appreciated <3 !!
see if u understand the answer
Answer:
C
Step-by-step explanation:
The circumference (C) of a circle is calculated using
C= 2πr ← r is the radius and has to be found
Given C = 20π , then
2πr = 20π ( divide both sides by 2π )
r = [tex]\frac{20\pi }{2\pi }[/tex] = 10
The area (A) of a circle is calculated using the formula
A = πr² = π × 10² = 100π m² → C
A jacket was $50 and is now on sale for $35. What is the percent change in the cost?
from 50 to 35 is 15, so it went down by $15.
if we take 50 to be the 100%, what is 15 off of it in percentage?
[tex]\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 50&100\\ 15&x \end{array}\implies \cfrac{50}{15}=\cfrac{100}{x}\implies \cfrac{10}{3}=\cfrac{100}{x}\implies 10x=300 \\\\\\ x=\cfrac{300}{10}\implies x=30[/tex]
Answer:
-30%
Step-by-step explanation:
The decrease in price was $15.
Divide $15 by $50, obtaining 0.30, which in turn is mult. by 100%.
The percentage change, from $50 to $35, was -30%.
Jessica is going to a vegetable shop. She buys some lady fingers for $23, some potatoes for $30,
and a bag of tomatoes for $16. Now she has $20 left. How much money did she have to begin
with?
Answer:
$89
Step-by-step explanation:
add all the numbers together