Answer:
The number of ways of selecting a combination of 8 marbles from a bag containing 20 marbles is 125970
Step-by-step explanation:
The number of selecting 8 marbles from a bag of 20 marbles
A combination gives the number of possible order or arrangement in a collection of k items selected from a set of n items
[tex]C_{n,k} = \dbinom{n}{k}= \dfrac{n!}{k!\cdot \left ( n - k \right )!}[/tex]
In the question, k = 8, and n = 20
Substituting the values of n and k in the above equation gives;
[tex]C_{20,8} = \dbinom{20}{8}= \dfrac{20!}{8!\times\left ( 20 - 8 \right )!} = 125,970[/tex]
Therefore, the number of ways of selecting 8 marbles from a bag containing 20 marbles is given by the combination C₂₀, ₈ = 125970.
Find the unknown angle measures
Answer:
Step-by-step explanation:
ok so this is a vetical angle. so they are equal to 180. so if 1 measurement is found the other is the difference of 180 and that angle measeurement.
so y is the same as 110
and 180 - 110 is 70, so x and z are equal to 70.
i hope this helped you :)
Answer:
y=110, x and z=70
Step-by-step explanation:
110 and y are congruent angles, so they both are 110 degrees.
both angles on the same side of the line always total 180 degrees,
so x and z must be 70.
What is the value of x?
Answer:
Step-by-step explanation:
the angles of a triangle add up to180.
70 plus 30 plus x = 180
100 plus x =180
x=80
The store offers a 20% discount A regular price of a t shirt is 18$ what is the discount price
Answer:
$14.40
Step-by-step explanation:
20% off of $18 is $14.4
A map of the scale of 1 inch equals 15 miles what is the actual distance between two cities are 2 1/2 inches apart on the map
Answer:
37.5
Step-by-step explanation:
1=15 so 2=30 plus half of 15 (7.5) add, 37.5! :) Hope this helped! Have a good day! ;)
Fill in wats missing?
Help fast!!! Give me the real solution pls. First correct awnser get brainliest!
Answer:
(x,y) = (3, -8)
Step-by-step explanation:
really long explanation and I dont have time
Answer:
Hi it is me tridon on my alt answering this so i can give brainliest
Step-by-step explanation:
john wants to measure the hieght of a tree. he walks exactly 100 ft from the base of the tree and looks up. the angle from the ground to the top of the tree is 33. how tall is the tree
Answer:
The tree is 64.9 ft tall.
Step-by-step explanation:
Think of a right triangle. Draw the right triangle. The tree is a vertical side of the triangle, so it is a leg with unknown length, so call its length y. The ground, is a horizontal leg with length 100 ft. The angle from endpoint of the horizontal leg on the ground away from the tree to the top of the tree is 33º.
For the 33º angle, y is the opposite leg, and 100 ft is the adjacent leg.
The trig ratio that relates the lengths of the opposite leg to the adjacent leg is the tangent.
tan A = opp/adj
tan 33º = y/100
y = 100 * tan 33º
y = 64.9
Answer: The tree is 64.9 ft tall.
Bradley answered 80% of the questions on his science test correctly. There were 30 questions on the test, and all the questions had equal value. How many questions did Bradley answer correctly on his test?
Answer:
he got 24 correct
Step-by-step explanation:
so basically yo do 30 divided by 10 to get 10 percent then you do that answer times 8 to get 80 percent yw xx
There are 24 answer correctly on his test.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
Given that;
Bradley answered 80% of the questions on his science test correctly.
And, There were 30 questions on the test.
Now,
Since, There were 30 questions on the test.
Hence, The correct answers = 80% of 30
= 80/100 × 30
= 24
Thus, Number of Bradley answer correctly on his test = 24
Learn more about the percent visit:
https://brainly.com/question/24877689
#SPJ2
help me on this pleaseeeeeeeeeeeeeeeeeeeeeeee!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What is the factorization of the expression below?
16x2 - 25y2
A. (8x-5y)(2x + 5y)
B. (8x - 5y)(2x - 5y)
C. (4x-57)(4x + 5y)
O D. (4x - 5y)(4x - 5y)
Answer:
(4x-5y)(4x+5y)
Step-by-step explanation:
Please I need your help!! Find the value of x.
A. 15°
B. 17°
C. 21°
D. 35°
E. 142°
Answer:
x = 21°
Step-by-step explanation:
Triangle = 180°
Angle YXZ = 34°
Angle XZY = (x + 104)°
Angle x = ?
34° + x° + 104° + x° = 180°
138° + 2x° = 180°
2x° = 180° - 138°
2x/2 = 42/2
x = 21°
A Rhombus is labeled ABCD. If the slope of AD is 2/3, what is the slope of BC?
Answer:
2/3 i believe
Answer:
2/3 :)
Step-by-step explanation:
CAN SOMEONE PLS HELP ME THIS IS DUE TODAY PLS HELP
Answer:
hi
Step-by-step explanation:
bye
Answer:
b. 408
Step-by-step explanation:
did the work
give brainliest please
What is the value of x in the equation
8+4 = 2(x-1)?
5
11
2
13
2.
07
Answer:
7
Step-by-step explanation:
8+4=2(x-1) (Given)
12=2x-2 (Distribute and simplify)
14=2x (Addition Property Of Equality)
7=x (Division Property Of Equality)
What number is the smallest?
-1 or -0.5
Keith bought a soft drink for 4 dollars and 9 candy bars . He spent a total of 31 dollars . How much did each candy bar cost ?
Answer:
they each costed $3
Step-by-step explanation:
-3x - 8 = 50
Anyone know how to solve this by elimination?
What’s the equation of the line that passes through the points (7,-4) and (-7,1)
Answer:
5x +14y = -21
Step-by-step explanation:
One way to write the equation of a line from two points is ...
(y2 -y1)(x -x1) -(x2 -x1)(y -y1) = 0
(1 -(-4))(x -7) -(-7 -7)(y -(-4)) = 0
5(x -7) +14(y +4) = 0
5x +14y -35 +56 = 0
5x +14y = -21 . . . standard form equation of the line
PLEASE PLEASE PLEASE HELP QUICK TOO PLEASE
Answer:
B 53.
Step-by-step explanation:
180-79=101
101+6x+13=180
-114 -114
6x=66
x=11
3(11)+20
33+20
53
Please help ! I’ll give brainliest
Answer:4,5
Sorry for taking a spot
Answer:
(-4,-5)
Step-by-step explanation:
Start at the point and move 7 boxes to the right and 4 boxes up. Otherwise, the point it (-3,1) so just add (7, 4). -3 plus 7 equals 4. 1 plus 4 equals 5.
180 formula is (-x,-y). The answer is (-4,-5)
8.15,8.04,8.009 least to greatest
Answer:
8.009, 8.04, 8.15
Step-by-step explanation:
Look at the decimal places. The farther away it is on the right side, the less the value of the number.
Answer:
8.009; 8.04; 8.15
Step-by-step explanation:
8.009 is the least
8.15 is the greatest
hope this helps :3
if it did pls mark brainliest
Name a ratio that is equivalent to 2:3
Answer:
4:6
Step-by-step explanation:
You multiply 2 by 2 and you get 4, if you multiply 3 by 2 you get 6, so that means they are equivalent.
y=-2x+4y=−2x+4y, equals, minus, 2, x, plus, 4 Complete the missing value in the solution to the equation. ((left parenthesis ,-2),−2)comma, minus, 2, right parenthesis
9514 1404 393
Answer:
(3, -2)
Step-by-step explanation:
Given:
y = -2x +4
Find:
the value of x for y=-2
Solution:
Put the value of y into the equation and solve for x:
-2 = -2x +4 . . . . use -2 for y
-6 = -2x . . . . . . . subtract 4
3 = x . . . . . . . . . .divide by -2
The solution of interest is (3, -2).
6x -3=-18 + 2х what doe that equal !!!!!
divide 880 in the ratio 3:5
Answer:
Step-by-step explanation:
So take 3:5 and add them which gets us 8 then divided 880 by 8 = 110
Hope this helps :D
Answer:
330:550
Step-by-step explanation:
divide 880 to (3+5=8) so 880/8=110
3:5 will be 3*110: 5*110 so is 330: 550
During a chess match, there are 12 pieces left on the board. The ratio of white pieces to black pieces is 2 : 1. How many white pieces are on the board?
Answer:
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Step-by-step explanation:
Please help! Will mark brainliest!
Answer:
x= -45
Step-by-step explanation:
Subtract 5 from both sides first
Simplify it
Multiply both sides by 3
Simplify it again
Divide both sides by -2
your answer would be x= -45
7
Write an equation of a line that is (a) parallel to the given line and (b)
perpendicular to the given line.
5. y = 7
6. X = 12
Parallel line is
Parallel line is
Perpendicular line is
Perpendicular line is
HELLLLP PLEASSEEE
Answer:
sorry i cant load picture
Select all of the numbers below that are equivalent to 3/4.
A) 6/8
B) 8/6
C) 6/12
D) 9/16
E) 15/20
F) 8/4
I already chose A and E, I just need the other one and can you please explain :)
Is (-3,4) a solution to the equation y=3x+107
O A solution
O Not a solution
Answer:
no
Step-by-step explanation:
its is not a solution, however if the equal sign actually looks like
[tex] \leqslant [/tex]
then it would be yes
Answer:
Not a solution
Step-by-step explanation:
( x, y ) = ( - 3, 4 )
x = - 3
y = 4
Substitute the values of x and y in the equation,
y = 3x + 107
4 = 3 ( - 4 ) + 107
4 = - 12 + 107
4 = 107 - 12
4 ≠ 95
Therefore,
( - 3, 4 ) is not a solution to the
equation y = 3x + 107.
