Answer:
[tex]\mu=473.2[/tex]
Step-by-step explanation:
Binomial Distribution
The binomial distribution is commonly used to model the number of successes in a sample of size n drawn with replacement from a population of size N.
The mean value of a binomial distribution is given by:
[tex]\mu=np[/tex]
Where b is the number of trials and p is the success probability for each trial.
We need to find the mean value with parameters n=676 and p=0.7, thus:
[tex]\mu=676\cdot 0.7[/tex]
[tex]\boxed{\mu=473.2}[/tex]
Marcus is buying a pair of running shoes that are discounted 20% from the original price
of $100. The store is also having a holiday sale, so they will take an additional 20% off the
sale price. How much will Marcus pay for his shoes?
Answer: $64
Step-by-step explanation:
20% of 100 is 20 so 100-20=80. Also 20% of 80 is 16. So 80-16=64. So that’s the answer.
Please help me please!!!!!!!! I will give brainliest
Answer:
No
Step-by-step explanation:
Counterexample for the numbers 25 and 10
The actual LCM is 50
If you were to multiply both numbers together you would get 250 which is incorrect
Let X be an exponential random variable with parameter λ=2 . Find the values of the following. Use 'e' for the base of the natural logarithm (e.g., enter e^(-3) for e−3 ).
a) E[(3X+1)2]=
b) P(1≤X≤2)=
Answer:
a
[tex]E[(3X+1)^2]= 8.5 [/tex]
b
[tex]P(1 < X < 2)=0.1170 [/tex]
Step-by-step explanation:
From the question we are told that
The parameter of X is [tex]\lambda = 2[/tex]
Generally the expected value of X is
[tex]E(X) = \frac{1}{\lambda }[/tex]
[tex]E(X) = \frac{1}{2}[/tex]
=> [tex]E(X) = 0.50 [/tex]
Generally we have that
[tex]E(X^2) = E(X)^2 + E(X)^2[/tex]
=> [tex]E(X^2) = [\frac{1}{2}] ^2 + [\frac{1}{2} ]^2[/tex]
=> [tex]E(X^2) = 0.5 [/tex]
Generally
[tex]E[(3X+1)^2]= E(9x^2 + 1 + 6x)[/tex]
=> [tex]E[(3X+1)^2]= 9E[X^2] + 1 + 6 E[X])[/tex]
=> [tex]E[(3X+1)^2]= 9* 0.5 + 1 + 6 * 0.5 [/tex]
=> [tex]E[(3X+1)^2]= 8.5 [/tex]
Generally
[tex]P(1 < X < 2)= P(X < 2) - P(X < 1)[/tex]
Here [tex]P(X < 2 ) = e^{- 2 * \lambda }[/tex]
=> [tex]P(X < 2 ) = e^{- 2 * 2 }[/tex]
=> [tex]P(X < 2 ) = e^{- 4}[/tex]
and
[tex]P(X < 1 ) = e^{- 1 * \lambda }[/tex]
[tex]P(X < 1 ) = e^{- 1 * 2 }[/tex]
[tex]P(X < 1 ) = e^{-2 }[/tex]
So
[tex]P(1 < X < 2)= e^{-2 } - e^{- 4} [/tex]
[tex]P(1 < X < 2)=0.1170 [/tex]
Help ASAP!!!!
A company sells herb blends for cooking. The tables below show the number of teaspoons for each herb in each blend and the cost for each blend.
What is the cost of basil per teaspoon?
o $0.15
o $0.18
o $0.19
o $0.23
Answer:
$0.23 or D
Step-by-step explanation:
Edg :)
The cost of one teaspoon of basil is $0.23. Therefore, option D is the correct answer.
We need to find the cost of basil per teaspoon.
How to interpret the data table?Interpretation of the data table is as follows:
Identify the subject under study.Identify the variable(s) presented in the table.Identify the measuring unit used (frequencies, percentages, rates, etc.)Read the information presented in table cells.Let the cost of one teaspoon of basil be $x, oregano be $y and parsley be $z.
Now, x+2y+3z=1.06-----(1), x+y+2z=0.72-----(2) and 2x+2y+z=0.99-----(3)
Equation (1)-(2), we get
x+2y+3z-(x+y+2z)=1.06-0.72
⇒y+z=0.34-----(4)
⇒z=0.34-y
Substitute z=0.34-y in equation (3).
That is, 2x+2y+0.34-y=0.99
⇒2x+y+0.34=0.99
⇒2x+y=0.65---(5)
Substitute z=0.34-y in equation (2)
Equation (5)-(4), we get
x+y+2(0.34-y)=0.72
⇒x+y+0.68-2y=0.72
⇒x-y=0.04-----(6)
Add equations (5) and (6), and we get
2x+y+x-y=0.65+0.04
⇒3x=0.69
⇒x=0.23
Therefore, the cost of basil per teaspoon is $0.23.
To learn more about the system of equations visit:
https://brainly.com/question/9351049.
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A farmer watered 3/7 of a field. What percentage is equivalent to the fraction of the field the farmer watered?
Answer:510
Step-by-step explanation:
Answer:
510
Step-by-step explanation:
Nicholas took a total of 10 quizzes over the course of 2 weeks. How many weeks of school will nicholas have attend this quarter before he will have taken a total of 15 quizzes?
Answer:
would be 3 weeks
Step-by-step explanation:
He is taking about 5 each week he has done 10 in 2 weeks so should be 3 weeks.
Answer:
3 weeks
Step-by-step explanation:
2 weeks is 10 quizzes and 1 week is 5 quizzes, so 2+1=3
will mark brainliest, a THX, friend request, and will rate ur answer
Answer:
35/4
Step-by-step explanation:
8 × 4 = 3232 + 3 = 35Write 35 over the original denominator: 35/4I hope this helps!
Is so easy pls help 20 points
Answer:
24
Step-by-step explanation:
bc 60-36=24 (idk if this is right)
f(3) = 5x + 3. Find the inverse of f(x).
O A. f-'(x) =
B. -1 (2) = 3 – 52
O c. f-'(x) =
OD. f-1(x) = 5x – 3
Reese loves to drink healthy green smoothies. A 16oz serving of smoothie has 170 calories. How many calories are in a 24oz smoothie?
Answer:
255 calories.
Step-by-step explanation:
There are many different ways to solve this, but I only know two.
First I noticed that 16 and 24 were both divisible by 4 so divided 16 by 4 and got 4. Then I divided 170 by 4 and got 42.5. So then I divided 24 by 4 and got 6. I multiplied 6 by 255.
OR
Divide 170 by 16 which gave me 10.625 which is the unit rate or constant of proportionality. So I multiplied 10.625 by 24 and got 255.
Steve is buying apples for the fifth grade. Each bag holds 12 apples. If there are 68 students total, how
many bags of apples will Steve need to buy if he wants to give one apple to each student?
Steve will need to buy
bags.
Answer:
mark me brainlest
Step-by-step explanation:
7
packets
Explanation:
Steve needs to know how many groups of 12 there are in the 75 students.
75
÷
12
=
6
1
4
However, Steve can only buy full packets of 12.
He needs 7 packets of apples.
I he only buys 6, there will not be enough for all the 5th Graders.
How can insurance protect you from financial loss?
Insurance can offer easy monthly payment options for premiums.
Insurance can offer warranties on household items.
Insurance can offer low co-insurance policies.
Insurance can cover you or your property in case of an accident, theft, or another unpredictable event.
Answer:
Insurance can cover you or your property in case of an accident, theft, or another unpredictable event.
Using the equation below, determine the range for the given domain values.
y= x 4 ; D={-4, 2, 8}
If it is :
[tex]y = f(x) = {x}^{4} [/tex]
_________________________________
[tex]f( - 4) = ({ - 4})^{4} = 256 [/tex]
_________________________________
[tex]f(2) = {2}^{4} = 16 [/tex]
_________________________________
[tex]f(8) = {8}^{4} = 4096 [/tex]
Range = { 16 , 256 , 4096 }
##############################
If it is :
[tex]y = f(x) = 4x[/tex]
_________________________________
[tex]f( - 4) = 4( - 4) = - 16[/tex]
_________________________________
[tex]f(2) = 4(2) = 8[/tex]
_________________________________
[tex]f(8) = 4(8) = 32[/tex]
Range = { -16 , 8 , 32 }
##############################
And we're done.....♥️♥️♥️♥️♥️
All the items on the sale rack were 75 percent off their original price.
If Jill bought an item on the sale rack and saved a total of $84, what is the value of x in the table above?
Answer:
112 $ is the original price
Step-by-step explanation:
[tex]x \times 0.75 = 84 \\ x = 84 \div 0.75 \\ x = 112[/tex]
you have to think that the original price multiplied by 0.75 (also known as 75%) gave the result of what he saves i.e 84 $. So we put up an equation with the original price multiplied by 75% which equals the 84 $ he saved on buying that item on sale
The value of x in the table above is $112.
How to find the percentage from the total value?Suppose the value of which a thing is expressed in percentage is "a'
Suppose the percent that considered thing is of "a" is b%
Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).
Thus, that thing in number is
[tex]\dfrac{a}{100} \times b[/tex]
Given;
All the items on the sale rack were 75 percent off their original price.
Jill bought an item on the sale rack and saved a total of $84
Now,
Let the original price without off be x
84*100/x=75
8400/75=x
x=112
Therefore, the price without 75 percent of will be $112
Learn more about percent here:
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urgent will mark brainliest
which answers are elements of the solution set of the inequality? check all answers that apply. x-46>/-79
A. -39
B. -45
C. -33
D. 25
E. 14
F. -25
First, isolate the variable:
x>-33
The answers would be 25, 14, -25.
I am not sure if that is a more than sign or a more than or equals sign; if it is a more than sign the answers mentioned above are the only answers, but if it a more than or equals sign, the answers are 25, 14, -25, -33.
If it helped please consider giving be brainliest :)
Answer:
C, D, E, FStep-by-step explanation:
Solving in steps
x - 46 ≥ - 79x ≥ 46 - 79x ≥ -33Correct answer choices:
C. -33 D. 25E. 14F - 25Suppose you have a total of $2.25 in dimes and
nickels. You have twice as many dimes, as nickels.
Which system of equations could be used to
determine how many of each coin you have?
Answer:
n = number of nickels
2n = number of dimes
n($0.05) + 2n($0.10) = $2.25
0.05n + 0.2n = 2.25
0.25n = 2.25
n = 2.25/0.25 = 9
2n = 2(9) = 18
You has 9 nickels and 18 dimes
Step-by-step explanation:
help anyone please??
Answer:
1.
Collinear points mean they are on the same line. That leaves us with answer d. F, E, G
2.
In this case, the intersection of the 2 planes is a line. 2 points both planes contain are B and C, so the intersection can be named as answer b: Line BC
3.
2 points define a line, so therefore the answer to the question is answer b. 1
Hoped this helped. If it did, could you please consider giving me a brainliest? :)
State the domain plssssa
Answer:
I think it's {3, 6, 12, 18}
Step-by-step explanation:
Domain: all x-values that are to be used (independent values).
Antonio, que tiene 64 lápices, tiene el doble de lápices que Lucía;
Lucía tiene el doble que Carlos y Carlos tiene el doble que Diana.
Answer:
lucia tiene 32
carlos tiene 16 y
diana tiene 8
What number is an interger?
Answer:
21, 4, 0, and −2048 are intergers
Step-by-step explanation:
Help me please ASAP Is the function y=5/4 linear and nonlinear
Answer:
linear
Step-by-step explanation:
These algebraic expressions are not equivalent. Explain
why they are not equivalent.
+ 8x – x2 - 6x
2x² – 2x
x2-1 + 8x
Answer:
If you simplify the first expression, you will not get the second expression. In the first expression, the x2 terms have coefficients of 1 and –1 and, when combined, the result is 0. Also, the x terms have coefficients of 8 and –6 and, when combined, the result is 2. Finally, the constant from the first expression is not in the second expression.
Step-by-step explanation:
Before 1918, approximately 40% of the wolves in a region were male, and 60% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 60% of wolves in the region are male, and 40% are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced. (Round your answers to three decimal places.) (a) Before 1918, in a random sample of 10 wolves spotted in the region, what is the probability that 7 or more were male
Answer:
P(≥ 7 males) = 0.0548
Step-by-step explanation:
This is a binomial probability distribution problem.
We are told that Before 1918;
P(male) = 40% = 0.4
P(female) = 60% = 0.6
n = 10
Thus;probability that 7 or more were male is;
P(≥ 7 males) = P(7) + P(8) + P(9) + P(10)
Now, binomial probability formula is;
P(x) = [n!/((n - x)! × x!)] × p^(x) × q^(n - x)
Now, p = 0.4 and q = 0.6.
Also, n = 10
Thus;
P(7) = [10!/((10 - 7)! × 7!)] × 0.4^(7) × 0.6^(10 - 7)
P(7) = 0.0425
P(8) = [10!/((10 - 8)! × 8!)] × 0.4^(8) × 0.6^(10 - 8)
P(8) = 0.0106
P(9) = [10!/((10 - 9)! × 9!)] × 0.4^(9) × 0.6^(10 - 9)
P(9) = 0.0016
P(10) = [10!/((10 - 10)! × 10!)] × 0.4^(10) × 0.6^(10 - 10)
P(10) = 0.0001
Thus;
P(≥ 7 males) = 0.0425 + 0.0106 + 0.0016 + 0.0001 = 0.0548
What value of x makes this equation true 5(x-3)=20
Answer:
X=7
Step-by-step explanation:
5x - 15 =20
5x=15+30
5x=35
Divide by 5
X=7
Assume that a procedure yields a binomial distribution with a trial repeated
n=5 times. Use some form of technology to find the probability distribution given the probability p=0.156 of success on a single trial.
Step-by-step explanation:
Use binomial probability:
P = nCr pʳ qⁿ⁻ʳ
where n is the number of trials,
r is the number of successes,
p is the probability of success,
and q is the probability of failure (1−p).
n = 5, p = 0.156, and q = 0.844.
r = 0, P = ₅C₀ (0.156)⁰ (0.844)⁵⁻⁰ = 0.428
r = 1, P = ₅C₁ (0.156)¹ (0.844)⁵⁻¹ = 0.396
r = 2, P = ₅C₂ (0.156)² (0.844)⁵⁻² = 0.146
r = 3, P = ₅C₃ (0.156)³ (0.844)⁵⁻³ = 0.027
r = 4, P = ₅C₄ (0.156)⁴ (0.844)⁵⁻⁴ = 0.002
r = 5, P = ₅C₅ (0.156)⁵ (0.844)⁵⁻⁵ ≈ 0
Solve for h.
2h − 1 = 1
h =
Answer:
h = 1
Step-by-step explanation:
2h - 1 = 1
2h - 1 + 1 = 1 + 1
2h = 2
2h/2 = 2/2
h = 1
Check:
2(1) - 1 = 1
2 - 1 = 1
1 = 1
Answer:
h = 1
Step-by-step explanation:
Add 1 to each side, so it now looks like this: 2h = 2Divide each side by 2 to cancel out the 2 next to h. It should now look like this: h = 1I hope this helps!
Select the correct answer.
In a figure, a pair of parallel lines is cut by a transversal. What is the measure of angle C if the measure of angle B is 35°?
Answer:
145 . this is because angles on a straight line add up to 180 degrees
Answer:
c.145
Step-by-step explanation:
Write the sentence as an inequality.
A number is less than 6 and greater than 2
Answer:
6 > x > 2
Step-by-step explanation:
This could be wrong, but if the number is less than six, and greater than two, itd look like that!
PLEASE HELP!! Find the market equilibrium point for the following demand and supply equations
9514 1404 393
Answer:
(p, q) = (16, 20)
Step-by-step explanation:
You can add the two equations together to make one from which q can be eliminated:
(4p) +(3p -q) = (-q +84) +(28)
7p -q = -q +112 . . . . simplify
7p = 112 . . . . . . . . . . add q
p = 112/7 = 16
Using this value in the second equation, we get ...
3·16 -q = 28
48 -28 = q = 20 . . . . . add q-28
The equilibrium point is (p, q) = (16, 20).
Please answer I need help badly