Answers
Part A
2 white, 5 red, 7 total
P(1st white) = 2/7
P(1st white, 2nd white) = P(1st white)*P(2nd white)
P(1st white, 2nd white) = (2/7)*(4/9)
P(1st white, 2nd white) = 8/63
Let m = 8/63
---------------
P(1st red) = 5/7
P(1st red, 2nd red) = P(1st red)*P(2nd red)
P(1st red, 2nd red) = (5/7)*(7/9)
P(1st red, 2nd red) = 5/9
Let n = 5/9 = 35/63
---------------
m+n = P(both are same color)
m+n = 8/63+35/63
m+n = 43/63
Answer: 43/63========================================
Part B
m = P(first white then red)
m = (2/7)*(5/9)
m = 10/63
n = P(first red then white)
n = (5/7)*(2/9)
n = 10/63
r = P(second bead isn't same color as first)
r = m+n
r = 10/63+10/63
r = 20/63
Answer: 20/63========================================
Part C
m = P(1st white, 2nd white)
m = (2/7)*(4/9)
m = 8/63
n = P(1st red, 2nd white)
m = (5/7)*(2/9)
m = 10/63
m+n = P(2nd is white)
m+n = 8/63+10/63
m+n = 18/63
m+n = 2/7
Answer: 2/7========================================
Part D
If we withdraw 1 white bead, but we add it back in, then the probability of selecting white has not changed on the second selection.
The same can be said if we picked a red bead as well. This is because we simply replace the red bead with a copy of some other red bead.
Nick's statement is another way of saying replacement is happening.
Answer: TrueRelated Questions
-5a + 15/2a - 25 = 53.2 + 21.8
Answers
Answer:
a= 40
Step-by-step explanation:
-5a + 7.5a - 25 = 53.2 + 21.8
add like terms on both sides: 2.5a - 25 = 75
add 25 on both sides: 2.5a = 100
divide both sides by 2.5: a = 40
Answer:
a = 40
Step-by-step explanation:
-5a + 15/2a - 25 = 53.2 + 21.8: Add 25 to Isolate variable
-5a + 15/2a = 53.2 + 21.8 + 25: Combine Like Terms and create simmilar terms
-10/2a + 15/2a = 100: CLM again
5/2a = 100: multiply both sides by inverse of 5/2 to isolate variable
a = 40
The width of a rectangle is 2x + 10 feet and the length is 12x - 4 feet. Find the perimeter of the rectangle.
Answers
Step-by-step explanation:
p=2(l+w)
p=2(12x-4+2x+10)
p=2(14x+6)
p=28x+12
Write a linear function f with the values f(-6) = 10 and f(2) = 10
Answers
Which lines are perpendicular to the line y – 1 = 1/3 (x+2)? Check all that apply.
y + 2 = –3(x – 4)
y − 5 = 3(x + 11)
y = -3x – 5/3
y = 1/3 x – 2
3x + y = 7
Answers
Answer: A. y + 2 = -3(x - 4).
C. y = -3x - 5/3 and E. 3x + y = 7
Step-by-step explanation:
got it correct on edge2020
What is the percentage of males given that they prefer butter pecan?
Answers
Answer:
67 percent wouldnt it?
Determine which ordered pair is a solution of y= x+2/5
Wouldn’t it be (0, 2/5)?
Answers
Answer:
(-1,2/5) i'm pretty sure
Step-by-step explanation:
Answer:
(2, 2 2/5)
Step-by-step explanation:
(0, 2/5) is correct, and since the slope is 1, adding any number to both the x and the y would still make it a solution.
In this case, you could add 2 to both x and y, resulting in (2, 2 2/5).
Hope it helped, and if it did, could you consider giving me brainliest? :)
Can someone help me with this graph? I don't understand how to solve it
Answers
X+y=-5
-x -x
y=-x-5 is the ending equation.
How to graph:
The y-intercept, or point where the graph starts, is -5
From there go down 1, right 1.
M=-x
B=-5
Answer: m = -1 b = -5
Step-by-step explanation:
Rewrite the equation in "slope-intercept form" y = mx +b .
m is the slope
b is the y-intercept, where the graph of the line crosses the y-axis
To rewrite the equation, to get "y" alone on the left side, subtract x from both sides:
x + y = -5
-x + x + y = -x - 5 (left side -x +x =0 so "cancel")
y = -x -5
You get the slope "m" from the coefficient of x, (invisible 1, sometimes)
since there is a negative sign, the coefficient is -1 That is m, the slope.
A negative slope goes down from left to right.
For -1, down one over 1 square.
Your graph should look like the screenshot below.
I hope this helps you understand better!
Spiral Review What single transformation is represented by the expression
P(x, y) → P' (-2, -y)?
Hint
O reflection of across the y-axis
reflection of across the x-axis
o rotation of 90° about the origin.
o rotation of 180° about the origin
Answers
Answer:
about 180 degrees
Step-by-step explanation:
107 +9+13=
Please help
Answers
write the number form 2.1 x 104 in standard form
Answers
Answer:
218.4
Step-by-step explanation:
You multiply the numbers together.
At Sascha's Salad Bar, customers make their own salads and pay by the ounce. Jenny paid $6.16 for a 22-ounce salad. How much would a 16-ounce salad cost?
Answers
Answer:
I think it is 4.48.
Explain:
6.16/22 is 0.28 Then 0.28 times 16 is 4.48.
Can I get a Brainliest?
Plz hurry and help it’s not a texts it’s a study guide.
Answers
Answer:
I do not know the answer but I think it is (1,0) x (-3,4)
Step-by-step explanation:
Answer:
y = -2x -2
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below :)
Which number line best shows the position of 172
Answers
In the equation shown, what is the value of n? 9^7/9^n=9^2
Answers
Answer:
MMMMMMMM
Step-by-step explanation:
PLS HELP ME! i'm so slow -.-
Answers
Answer:
128
Step-by-step explanation:
it is a reflection and goes to the other side
The figures in the pair are similar. Find the missing length.
Answers
Answer:
c. 9 cm
Step-by-step explanation:
4*1.5=6
6*1.5=9
y=9
Jon has a $21.61 balance on a gift card that can be used to purchase online music. Each song download costs $1.29. Jon wants to maintain a $10 balance to purchase a new album that releases next month. How many songs can Jon purchase?
Answers
Answer: Jon can purchase 9 songs.
Step-by-step explanation: $21.61 - $10.00 = $11.61
$1.29 · 9 = $11.61
On a map, 1/2 inch represents 10 actual miles. Two towns that are 4 1/2 inches apart on this map are how many actual miles apart?
A.20
B.40
C.10
D.45
E.90
Answers
1/2 inches = 10 miles
9(1/2) inches = 4 1/2 inches
9(10) miles = 90 miles
What are the coordinate of the vertices of A’B’C after each movement
Answers
what is the answer in 4x2 + 32xy?
Answers
Answer:
The answer is 8⋅(4xy+1)
Marcus collect donations and says care packages to troops overseas he has 36 bars of soap and 24 toothbrushes arrange the items so the packages are identical what is the greatest number of packages that Marcus can make using all the soap and toothbrushes?
Answers
Answer: I am sure is 12 package
.806 divided by 1.3 I need the stepsssss
Answers
Answer
.62
Step-by-step explanation:
im sorry i cannot provide the steps but using a calculator you can conclude .62
Answer:
0.806 ÷ 1.3
=
806
1000
÷
13
10
=
806
1000
×
10
13
=
806 × 10
1000 × 13
=
8060
13000
=
8060 ÷ 260
13000 ÷ 260
=
31
50
Which equation shows y= 3/4x - 5/2 in standard form?
A 3x – 4y = –10
B 4x – 3y = -10
C 4x – 3y = 10
D 3x -- 4y = 10
Answers
Answer:
the answer is D
can you also please mark me as brainliest?
if she had a child when she was 14 now her son is 21 how old is she now
Answers
Answer:
35
Step-by-step explanation:
21+14=35
What is the equation of a line parallel to -5x + y= 2 that passes through the point with coordinates (-2,1)?
Answers
Answer:
y=5x+11
Step-by-step explanation:
You can solve this with the point-slope formula: y-y1=m(x-x1). The line is parallel; both slopes are equivalent.
First we have to rewrite the original equation, which is rewritten into y=5x+2 by subtracting -5x on both sides.
Next, plug in the coordinates we have into the point-slope formula (-2, 1), along with the slope from the original equation (5). To check, we can plug the coordinates back into the equation.
y-(1)=5(x+2)
y-1=5x+10
y=5x+11
Check:
(1)=5(-2)+11
1=-10+11
1=1
what value of x makes the equation true 2( x + 10) =4( 2x - 1)
Answers
Answer:
6
Step-by-step explanation:
Step-by-step explanation:
Answer:-[tex]\bf{2( x + 10) =4( 2x - 1)}[/tex]
We need the value of x. So, we will break the brackets first.
[tex]\bf{2( x + 10) =4( 2x - 1)}[/tex]
[tex]\bf{2x + 20 = 8x - 4}[/tex] [ Distributive Property]
[tex]\bf{2x -8x = -20 - 4}[/tex] [ Brought x to one side and signs interchange]
[tex]\bf{-6x = -24}[/tex]
[tex]\bf{x = \dfrac{24}{6}}[/tex]
[tex]\bf{x = 4}[/tex]
Hope it helps :)
Simplify
-(6x – 12) - (-20) – 7x
Please help me thanks
Answers
Answer:
−(6x−12)−(−20)−7x
Distribute:
=−6x+12+20+−7x
Combine Like Terms:
=−6x+12+20+−7x
=(−6x+−7x)+(12+20)
=−13x+32
Answer:
=−13x+32
Can you change a number in base 2 to a decimal because I don't think it is possible.
Answers
Answer:
If you divide it by a number that cannot be divided, it will be a decimal number
-Answer Quickly-
Find the equation of the line.
Use exact numbers.
Answers
Answer:
y=3x+3
Step-by-step explanation:
i think if not im so sorry
what is the volume of the rectangular prism?
Answers
Answer:
15
Step-by-step explanation:
i did maths