Complete Question:
There are 10 marbles. What is the probability of drawing 2 blue marbles if the first marble is NOT placed back in the bag before the second draw.
2 yellow, 3 pink, 5 blue
Answer:
[tex]P(B_1\ and\ B_2) = \frac{2}{9}[/tex]
Step-by-step explanation:
Given
[tex]Blue = 5[/tex]
[tex]Pink = 3[/tex]
[tex]Yellow = 2[/tex]
[tex]Total = 10[/tex]
When the first blue marble is selected, the probability is:
[tex]P(B_1) = \frac{n(Blue)}{Total}[/tex]
[tex]P(B_1) = \frac{5}{10}[/tex]
Since the first marble is not returned, we have the following marbles left
[tex]Blue = 4[/tex]
[tex]Pink = 3[/tex]
[tex]Yellow = 2[/tex]
[tex]Total = 9[/tex]
The probability of picking a second blue marble is:
[tex]P(B_2) = \frac{n(Blue)}{Total}[/tex]
[tex]P(B_1) = \frac{4}{9}[/tex]
So, the required probability is:
[tex]P(B_1\ and\ B_2) = P(B_1) * P(B_2)[/tex]
[tex]P(B_1\ and\ B_2) = \frac{5}{10} * \frac{4}{9}[/tex]
[tex]P(B_1\ and\ B_2) = \frac{5*4}{10*9}[/tex]
[tex]P(B_1\ and\ B_2) = \frac{20}{90}[/tex]
[tex]P(B_1\ and\ B_2) = \frac{2}{9}[/tex]
Some values of functions f, g, h, and k are provided in the
table on the right. Find a possible equation of each function.
Verify your results with a graphing calculator table. [HINT: Use
linear or exponential equations.]
The equation of function f is f(x) =
Answer:
100(1/2)^x
Step-by-step explanation:
i took the test
evaluate x2 when x=-2
Answer:
-4
Step-by-step explanation:
x2 is x*2.
If x=-2, then the equation would be -2*2 which is -4.
Answer:
-4
Step-by-step explanation:
x2 when x=-2
-2 (2)
-2 · 2
-4
45/14=x/14 what is “x”
Answer:
45
Step-by-step explanation:
x=45, just get rid of the denominators when they're the same
please help and show work
9514 1404 393
Answer:
h = 12 m
Step-by-step explanation:
Sides of the triangle are proportional.
(3.6 m)/(1.2 m) = h/(1.2 m + 2.8 m)
(4 m)(3.6/1.2) = h . . . . . multiply by 4 m
h = 12 m
hello, could someone help me with this question, thank you.
It's C.
Basically, when youre dividing something, the bases would stay the same but the exponents would change. For division, you'd have to substract the exponent of the denominator from the denominator (of like bases, of course)
In this case, it's 10^8-(-3).
The only reason it's not 10⁵ is because of the negative 3. If it were a positive 3, it would become 10⁵.
A certain bacteria triples in a Petri dish every hour. Which formula should be used to determine the bacteria after x hours assuming uninhibited growth and there was initially 500 colonies.
a
500\ \left(1.03\right)^x
b
500\ \left(3\right)^x
c
500\ \left(2\right)^x
d
500\ \left(1.02\right)^x
Answer:
500(3)^x
Step-by-step explanation:
Got it right on edge
how do you calculate an 1/8 of 60?
Answer:
1/8 of 60 is 7.5
Step-by-step explanation:
Find the dot product of U and V
u=7i, v = -2i + 5j
Answer:
-14
Step-by-step explanation:
Multiply the is together. Multiply the j's together. Add the answer. The answer is a scalar.
(7 × -2) + (5 × 0)
= -14
Convert [tex]\p\frac{5\pi }{18}[/tex] radians into degrees.
Answer:
50
Step-by-step explanation:
Formula: 1rad × 180/π = 57.296°
A is the poin 3,5 and b is the point 0,k if the distance of ab is 5 units find the possible value of k
Answer:
K is either 9 or 1
Step-by-step explanation:
Sqrt((0 - 3)² + (k - 5)²) = 5
Square both sides
(0 - 3)² + (k - 5)² = 5²
(0 - 3)² + (k - 5)² = 25
-3² + (k - 5)² = 25
9 + (k-5)(k-5) = 25
9 + k² - 5k - 5k + 25 - 25 = 0
k² - 10k +9 = 0
k² - 9k - k + 9 = 0
k(k - 9) - 1(k - 9) = 0
k - 1 = 0 ; k = 1
k - 9 = 9; k = 1
K = 9 or k = 1
K is either 9 or 1
Nine people are going to share a 128-ounce bottle of soda. How many ounces will each person get to drink?
Increase 60 by 25%.
Answer:
75
Step-by-step explanation:
25% * 60 = 15
60 + 15 = 75
Answer:
the answer is 75
Step-by-step explanation:
i found out that that 25% of 60 was 15 because thats what i get when i divide it by 4. so then i added 15 ot 60 and it gave me 75
What is the name of the angle pair for <1 and <2?HELP
Answer:
It's A(complementary)
A bacteria is tripling every 10 days. If there is a 4 bacteria in a sample, how long with it take to reach 1 million bacteria?
A rectangular prism has a length of 3 meters, a height of 7 meters, and a width of 7 meters. What is its volume, in cubic meters?
Answer:
147 cubic meters
Step-by-step explanation:
Volume = length x width x height
V = 3 x 7 x 7
V = 21 x 7
V = 147 cubic meters
Which pair of functions are inverses of eachother?
Answer:
D
Step-by-step explanation:
A.
y= 6x³
to find the inverse substitute x for y and y for x and solve for y
x= 6y³ ; divide both sides by 6
x/6 =y³ ; cube root both sides
(∛x)/ ∛6 = y
so (∛x)/6 and 6x³ are NOT inverse of each other
B
y= (x+2)/5
x= (y+2)/5; multiply by 5
5x = y+2; subtract 2
y= 5x-2 NOT corect
C
y = 5x-6
x= 5y-6; add 6 to both sides
x+6 = 5y ; divided by 5 both sides
y = (x+6)/5 is NOT correct
D
y=7x -2
x= 7y-2
x+2 = 7y , (x+2) /7 = y so IS correct
Compute the average rate of change of f(x) = 2x - 1 from x1 = 1 to X2 = 3.
Answer:
i hope this help you
To make 3 dinner rolls, 3/4 cup of flour is used. How many rolls can you make with 2 1/2 cups of flour?
Answer: I can make 10 rolls with 2 1/2 cups of flour
Step-by-step explanation:
3/4 cup of flour can makes 3 Dinner rolls
Therefore 2 1/2 cups of flour will make
=2 1/2 x 3) / (3/4)
(5/2 x 3 ) / ( 3/4)
(15/2) /(3/4)
7.5/ 0.75 = 10 rolls
PLZ HELP FAST I NEED IT RN
Answer:
16 units
Step-by-step explanation:
Answer:
16 units
Step-by-step explanation:
JM- 3 units long
JK- 5 units wide
KL-3 units long
ML-5 units long
Perimeter is the sum of all 4 sides meaning:
3+5+3+5=16
16 units is the answer
Felix is dividing 322 by 12. He
says the answer is going to be
smaller than 322. Do you agree
with him or disagree?
Answer:
agree
Step-by-step explanation:
322/12 is 26.8333333333 so its obviously smaller than 322
(8b+12)+(3n+6)+(9b-4)
Answer:
17b+3n+14
Step-by-step explanation:
no any step
okk
finished
Answer:
Step-by-step explanation:
(8b+12)+(3n+6)+(9b-4)
Remove the parentheses:
8b+12+3n+6+9b-4
Group like terms:
8b+9b+3n+12+6-4
Add the similar element:8b+9b=17b
=17b+3n+12+6-4
add/subtract the numbers:12+6-4=14
=17b+3n+14
Is the following shape a square? How do you know?
pls help I keep messing up side DA
Answer:
The answer will be D.
y varies Directy with
the square
of x. if
y=24 when x=2
Find y when
X= 5
Answer:
When X=5, Y=60
Step-by-step explanation:
24 | 2
36 | 3
48 | 4
60 | 5
Can someone please help me I really need help
Answer:
2
Step-by-step explanation:
common sense
What is the equation of the line passing through (-2,-7) (4,23)
Answer:
The equation of line Passing through (2,3) and (4,7)
The slope of line is
4−2
7−3
=
2
4
=2
The equation of line is y−7=2(x−4)
y−7=2x−8
2x−y−1=0
Step-by-step explanation:
What is the median of the data set?
38, 65, 72, 67, 80
A
67
B 64
C
72
D 65
Answer:
A) 67
Step-by-step explanation:
Answer:
Answer is A.67
Step-by-step explanation:
I hope it's helpful!
Help please I’m need help bad.
Answer:
A. 18
Step-by-step explanation:
Here the numbers are being divided by 7
so
126 / 7 = 18
Which equation best represents the relationship between x and y ?
Answer:
ummmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Step-by-step explanation:
What steps must you take to divide fractions?
Answer:
Find a reciprocal.
Step-by-step explanation:
ex: If you have 5/6 divided by 3/7 you would flip the 3/7 so it's 7/3 so then you can simply multiply them. REMEMBER YOU CANNOT DIVIDE FRACTIONS. YOU MUST CHANGE THE PROBLEM INTO MULTIPLICATION FIRST!!!
Find the distance between the points (5, 7) and (1, 10).
Hey there!
Formula: y2 – y1/ x2 – x1
y2 = 10
y1 = 7
x2 = 1
x1 = 5
Equation: 10 – 7/ 1 – 5
10 – 7 = 3 ⬅️ Numerator
1 – 5 = –4 ⬅️ Denominator
Answer: 3/–4
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)