Answer:
8 out of 40 trials- 8/40
simplify that and it becomes 1/5
1/5 of 10 is 2
so, I'd estimate there are 2 purple marbles.
PLEASE GEOMETRY HELP WILL MARK BRAINLIEST!!!
Which equation represents a circle that contains the point (-5, 3) and has a center at (-2, 1)? Distance formula: vaa -02 (x - 1)2 + ( + 2)2 = 25 (x + 2)2 + (-1)=5 O (* + 2) + (-1) - 25 (x-1) + ( + 2) = 5
Given:
The center of the circle = (-2,1).
Circle passes through the point (-5,3).
To find:
The equation of the circle.
Solution:
Radius is the distance between the center of the circle and any point on the circle. So, radius of the circle is the distance between the points (-2,1) and (-5,3).
[tex]Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
[tex]r=\sqrt{(-5-(-2))^2+(3-1)^2}[/tex]
[tex]r=\sqrt{(-5+2)^2+(2)^2}[/tex]
[tex]r=\sqrt{(-3)^2+(2)^2}[/tex]
On further simplification, we get
[tex]r=\sqrt{9+4}[/tex]
[tex]r=\sqrt{13}[/tex]
The standard form of a circle is:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
Where, (h,k) is the center of the circle and r is the radius of the circle.
Substitute h=-2, k=1 and [tex]r=\sqrt{13}[/tex].
[tex](x-(-2))^2+(y-1)^2=(\sqrt{13})^2[/tex]
[tex](x+2)^2+(y-1)^2=13[/tex]
Therefore, the equation of the circle is [tex](x+2)^2+(y-1)^2=13[/tex].
can u help me with this
Answer:
245 degrees
Step-by-step explanation:
The circle is 360 degrees and you have only found 55 and 60 you add those together and you will get 115 to find jk you first add the numbers you have then minus them with 360 because its a circle. 360-115 will be 245 that would be your answer.
Answer:
120 degree
Step-by-step explanation:
jn-60 vwrtical oopsite angle
nk 180
jk 180-60
Math is garbage and it sucks please help before I smash my laptop with a brick
Answer:
7x+66=122
Hope this helps =]
Answer:
7x+66=122
Step-by-step explanation:
x+x+x+x+x+x+x+66=122
7x+66=122
7x=56
x=8
At an ice cream social, 56 people ordered chocolate ice cream while 32 people ordered vanilla
ice cream.
(a) What is the ratio of the number of people
who ordered chocolate to the number of
people who ordered vanilla in simplest
terms?
(b) At a different event, 42 people bought
chocolate and 30 bought vanilla. Does
this event have the same
chocolate to vanilla purchases as the ice
cream social from (a)? Justify.
ratio of
Please help
If 100% = Rs. 120, then
A. 120% = Rs. 84
B. 20% = Rs. 84
C. 70% = Rs. 84
D. 30% = Rs. 84
Answer:
Simple: C. 70% = Rs. 84
Step-by-step explanation:
cause it can't be 120% if Rs.120 is the 100%
7
x 16
00
What is the correct answer for this problem?
Answer:
11200
Step-by-step explanation:
is that right
Compare. Fill in the blank using <,>,or =
16. -2/3_____-1
17. -1 3/4_____1 5/6
18. -2/7______0
Find the probability of drawing a Club 2 through 6 on the first draw, replacing it and
drawing a black card on the second draw.
Answer:
= 0.0471 or 4.71%
Step-by-step explanation:
(5/52) x (25/51)
= 0.04713423831
HELP PLEASE QUICKLY
How many solutions does this system of equations have? Explain.
y = x + 1
y = 2x + 2
The system of equations has ... solution.
The equations have ... slopes, so the lines intersect at ... point.
Convince Me!
The equations of a system have the same slopes. What can you determine about the solution of the system of equations?
Answer:
The system of equations has one solution. The equations have different slopes, so the lines intersect at one point.
If a system of equations have the same slope, then the lines will run parallel to each other and never cross, leading to no solution being possible. Or if they have the same slope and same y-intercept (therefore being equations for the same line), they will have an infinite number of solutions.
Step-by-step explanation:
The solution to a system of equations is the point where the lines intersect. Looking at this question if we remember the slope-intercept form y=mx+b where m is slope and b is the y-intercept. We can see m=1 for the first equation and m=2 for the second equation. Anytime two equations have different slopes it is guaranteed they will intersect at some point leading to one solution.
HELPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Answer:
1. +25
2. +14
3. -10
4. -3
5. +2
Step-by-step explanation:
I hope these help , please tell me if i got any incorrect or misunderstood!
Need help pleaseee someone
Answer:
Step-by-step explanation:
Ben earned $ 400 mowing lawns this month. Of his earnings, he plans to spend 18% repairing
lawn equipment, deposit 20% in his savings, and use 35% for clothes. He will spend the rest.
How much will Ben have left to spend Show your work. help ill mark brainlessly
Answer:
K 110
Step-by-step explanation:
Find the amount to be spent for each item/service
18% of $400= $72
20% of $400= $80
35% of $400= $140
Now, add all his expenditures and subtract it from his income
$400 - ($72+$80+$140) = $400 - $290 = $110
Help me out , I’ll appreciate it !
Answer:
(a) Infinite
(b) 6 (because a to z contains 26 letters so we can only take 26 letters or less otherwise the letter can be repeated so we have to take the num which is coming in table of 4 so 24then we can make 6passwords)
THANK you
If you helped with my answer pls tag me brianliest....
Find the LARGEST of three consecutive numbers if their sum is 105
Answer:
36
Step-by-step explanation:
devide 105 by 3 then add one 34+35+36=105
Answer:
It's 37 because the three are 33, 35, and 37. 37 is the largest of all of them.
Step-by-step explanation:
105/3 = 35, therefore the middle number is 35, and the 3 numbers are 33, 35, and 37.
URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (29pts)
Answer:
C
Step-by-step explanation:
Answer:
D. 9.95 in
Step-by-step explanation:
law of sines
(sin(B)/b)=(sin(C)/c)
sin(56)/x=sin(90)/12
sin(56)/(sin(90)/12)=x
9.95=x
Hope this helps :)
helppp
What is the equation of the line that passes through the point (-4,4) and has a
slope of 3/4 ?
Answer:
y = 3/4x + 7
Step-by-step explanation:
Put it in point-slope form:
y - 4 = 3/4(x - -4)
y - 4 = 3/4(x + 4)
y - 4 =3/4x + 3
y = 3/4x + 7
What is the area of this shape hurry
Answer:
15 units squared
Step-by-step explanation:
sorry if im wrong
Answer:
12
Step-by-step explanation:
Area of triangle + area of square + area of triangle = total area
(Area of a triangle: A = 1/2bh)
(Area of a square: A = bh)
Area of smallest triangle =
A = 1/2 (2) (2) = 2
Area of largest triangle=
A = 1/2 (2) (6) = 6
Area of the square =
A = 2 x 2 = 4
Total shape:
2 + 4 + 6 = 12
What is the volume of the shaded solid? Round to the nearest tenth of a cubic unit. 11.6 units3 45.4 units3 57.0 units3 68.6 units3
Answer:
45.44units^3
Step-by-step explanation:
Volume of the shaded part = Volume of the triangular based prism - Volume of square based prism
Volume of prism = Base area * Height
Volume of the triangular based prism = (5 * 4 * 5.7)/2
Volume of the triangular based prism = 57units^3
Volume of square based prism = 1.7* 1.7 * 4
Volume of square based prism = 11.56units^3
Taking the difference
Volume of the shaded solid = 57 - 11.56
Volume of the shaded solid = 45.44units^3
Answer:
B
Step-by-step explanation:
What is the value of c ?
Answer:
34
Step-by-step explanation:
:)
Answer:
34
Step-by-step explanation:
Remember that the sum of the angles of a triangle is 180
And since two sides are congruent b = 73
So 180-(73+73) = 34
The average number of people who attended football games at a stadium increased from 8000 people in the year 2005 to 12500 people in the year 2012. By what percentage did the average number of people at the games increase from 2005 to 2012?
Answer: 43.75%
Step-by-step explanation:
The percentage change is given by:
= [Final value - initial value / Initial value] x 100
The percentage increase in the average number of people from 2005 to 2012 is 56.25%.
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying it by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
We have,
The average number of people in 2005 = 8000.
The average number of people in 2012 = 12500.
The change in the average number of people from 2005 to 2012.
= 12500 - 8000
= 4500
The percentage change in the average number of people at the games from 2005 to 2012.
= [Change in the average number of people / Average number of people in 2005] x 100
= (4500 / 8000) x 100
= 450/8
= 56.25%
Thus,
The percentage increase in the average number of people from 2005 to 2012 is 56.25%.
Learn more about percentages here:
https://brainly.com/question/11403063
#SPJ6
Q7: Subtract
(a) -6x – 3 from 2x – 5,
(b) 6x – y + 5z from 10x – 2y + z,
(c) 8p + 99 – 5rs from 4p – 49 + 15sr,
(d) 8a – 3b + 50 – 4d from 10a – b - 40 - 8d.
(-8,-2);m=3/4 in point slope form
Answer:
y + 2 = ³/₄(x + 8)Step-by-step explanation:
The point-slope form of the equation that describes the line with a slope of m and containing the point (x₀, y₀) is: y - y₀ = m(x - x₀)
m = ³/₄
(-8, -2) ⇒ x₀ = -8, y₀ = -2
Therefore:
y - (-2) = ³/₄(x - (-8))
y + 2 = ³/₄(x + 8)
A swimming pool is treated periodically to control harmful bacteria growth.
The concentration of bacterial per cm³ after t days is given by
C(t)
[tex] = 30t^2 -240t + 500 [/tex]
in how many days after a treatment will be concentration be minimal ?
Answer:
The answer is 4
Step-by-step explanation:
[tex]c \: (t) = {30ft}^{2} = - 240t + 500[/tex]
For a quadratic function as given to find the minimum you need to write it in vertex or find the vertex (the vertex in a quadratic function is thr maximum or minimum).
Use the next formula to find the t coordinate of the vertex (the time in the minimum concentration of bateria):
[tex]c \: (t) = {at}^{2} + bt + c \\ \\ tm = - \frac{b}{2a} [/tex]
For the given function:
[tex]tm = - \frac{ - 240}{(2)30} = \frac{240}{60} = 4[/tex]
The minimum concentration of bacteria will be after 4 days.
Anyone know the answer to this
Answer:
The answer is B
Step-by-step explanation:
3/4
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{4x − 3y = −32x + 6y = −4 Solve the system of equations.
Input your answer as a point.
Otherwise, enter "No solution" or "Infinite number of solutions.
Answer:
Sorry I don't know that one
Solve for x. 5:1::6:x
Answer:
Step-by-step explanation:
5/1 = 6/x
5x = 6
x= 6/5
Answer:
x
=
15
Step-by-step explanation:
I need helppp I’m stuck
A square mat has an area of 324 square inches. What is the length of the mat?
Joy and Joey share a 18-ounce bucket of clay. By the end of the week, Joy has used
1
6
of the bucket, and Joey has used
2
3
of the bucket of clay. How many ounces are left in the bucket?