Answer:
2 2/3
Step-by-step explanation:
Is (10, 6) a solution to the inequality y ≤ 3x + 2?
Answer:
yes
Step-by-step explanation:
because 10<20 so ten is less than or equals to 20
whats expressions are equal to 4( 7x + 2 + x )
Answer:
8 (4 x + 1)
and
32 x + 8
Step-by-step explanation:
1. Ali mula mengulangkaji mata pelajaran matematik pada pukul 8.10 p.m.
Dia tamat mengulangkaji pada pukul 10.05 p.m. Berapa lamakah Ali
mengulangkaji mata pelajaran matematik?
5x+3y=29
5x-3y=11
Solution=?
Answer: X=4 and Y=3
Step-by-step explanation:
Someone please help with this it’s due soon!! I’ll mark brainliest
Answer:
A. (1,7)
Step-by-step explanation:
The format when pairing coordinates and coordinate plane is
(X,Y) a.k.a. (horizontal,vertical) That is where the other two lines intersect
Rachel rents three DVDs from Watchflicks and two DVDs from Bluechest. The probability that a DVD is faulty is 4% for Watchflicks and 5% for Bluechest. All DVD rentals being faulty or otherwise are independent of each other. Calculate the probability that exactly
Answer:
0.017
Step-by-step explanation:
The probability that exactly some number of DVDs are faulty is approximately 0.9884 or 98.84%.
To calculate the probability that exactly a certain number of DVDs are faulty, we need to use the binomial probability formula. The binomial probability formula is given by: [tex]P(X = k) = C(n, k) * p^k * q^{n-k}[/tex]
- P(X = k) is the probability of getting exactly k successes (in this case, exactly k faulty DVDs).
- C(n, k) is the number of combinations of n items taken k at a time, also known as the binomial coefficient. It is calculated as [tex]C(n, k) = n! / (k! * (n - k)!).[/tex]
- p is the probability of success (getting a faulty DVD from Watchflicks or Bluechest).
- q is the probability of failure (getting a non-faulty DVD), which is equal to 1 - p.
- n is the total number of trials (in this case, the total number of DVDs rented).
Let's calculate the probability that exactly "x" DVDs are faulty (where x can be 0, 1, 2, 3, or 4).
Probability of getting a faulty DVD from Watchflicks (p1) = 4%
= 0.04
Probability of getting a faulty DVD from Bluechest (p2) = 5%
= 0.05
Total number of DVDs rented from Watchflicks (n1) = 3
Total number of DVDs rented from Bluechest (n2) = 2
Total number of DVDs rented (n) = n1 + n2
= 3 + 2
= 5
Let's calculate the probabilities for each value of x:
1. Probability that exactly 0 DVDs are faulty (x = 0):
[tex]P(X = 0) = C(5, 0) * (0.04)^0 * (1 - 0.04)^5 \\= 1 * 1 * 0.961^5 \\\approx 0.8145[/tex]
2. Probability that exactly 1 DVD is faulty (x = 1):
[tex]P(X = 1) = C(5, 1) * (0.04)^1 * (1 - 0.04)^4 \\= 5 * 0.04 * 0.960^4 \\\approx 0.1641[/tex]
3. Probability that exactly 2 DVDs are faulty (x = 2):
[tex]P(X = 2) = C(5, 2) * (0.04)^2 * (1 - 0.04)^3 \\= 10 * 0.0016 * 0.941^3 \\\approx0.0084[/tex]
4. Probability that exactly 3 DVDs are faulty (x = 3):
[tex]P(X = 3) = C(5, 3) * (0.04)^3 * (1 - 0.04)^2 \\= 10 * 0.000064 * 0.922^2\\ \approx0.0014[/tex]
5. Probability that exactly 4 DVDs are faulty (x = 4):
[tex]P(X = 4) = C(5, 4) * (0.04)^4 * (1 - 0.04)^1 \\= 5 * 0.00000256 * 0.960 \\\approx 0.0000024[/tex]
Now, to find the probability that "exactly" (all DVDs being accounted for) a certain number of DVDs are faulty, we simply add up the individual probabilities: P(exactly 0 DVDs faulty) + P(exactly 1 DVD faulty) + P(exactly 2 DVDs faulty) + P(exactly 3 DVDs faulty) + P(exactly 4 DVDs faulty) ≈ 0.8145 + 0.1641 + 0.0084 + 0.0014 + 0.0000024
≈ 0.9884
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A mail man leaves home and rides his bike due east for two miles. He drops off a paper at a house. He then turns and travels for 1 mile on a street that is angled north from the first street by 35 degrees. He stops to rest. His pet bird escapes from home and flies directly to where he is resting. How far and in what direction does the bird fly?
Answer:
I was trying to search it but couldn't find anything I am not tryin to steal points but ;-;
choose the highest HCF of 6xy^3 and 9x^2y
A.x^2y^3
B.3xy
C.54x^3y^4
D.18x^2y^3
Answer:
3xy.
Step-by-step explanation:
HCF of 6 and 9 = 3.
HCF of x and x^2 = x.
HCF of y^3 and y = y.
So that would be 3xy.
10x 4 tens unit and standard form
Answer:
Tens unit:4 and 40
Step-by-step explanation:
An SRS of size 20 is drawn from a population that has a normal distribution. The sample has a mean of 122.5 and a standard deviation of 8. Give the standard error of the mean:______
Answer:
The value is [tex]\sigma_{\= x} = 1.789[/tex]
Step-by-step explanation:
From the question we are told that
The sample size is n = 20
The sample mean is [tex]\= x = 122.5[/tex]
The standard deviation is [tex]s = 8[/tex]
Generally the standard error of the mean is mathematically represented as
[tex]\sigma_{\= x} = \frac{s}{\sqrt{n} }[/tex]
=> [tex]\sigma_{\= x} = \frac{8}{\sqrt{20 } }[/tex]
=> [tex]\sigma_{\= x} = 1.789[/tex]
I need this one too by 11:59 plzz
Answer:
Step-by-step explanation:
The formula for the area of a rectangle is [tex]area=w*l[/tex] , where w is the width of the rectangle and l is the length of the rectangle.
The question tells us that the length is four times it width. This means that [tex]l=4w[/tex] . Since we are given the length, 4w, and the area, 256, we can plug in these values into our formula for area of a rectangle and solve for the width:
[tex]256=w*4w[/tex]
[tex]w^2=\frac{256}{4}[/tex]
[tex]w=\sqrt{64} =8[/tex]
The width of the rectangle is 8 centimeters.
Now that we have the width of the rectangle, we can plug that value into our original equation again to solve for the width:
[tex]256 = 8 * l[/tex]
[tex]l=32[/tex]
The length of the rectangle is 32 centimeters.
If you bought a stock last year for a price of $59, and it has risen 13% since then, how much is the stock worth now, to the nearest cent?
Answer:
It will be 66.67 but if we estimate to the nearest tenth It will be 66.7
The stock is currently worth $66.67.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
To find the current value of the stock, we need to multiply its original price by the percentage increase:
Current value = Original price x (1 + Percentage increase)
Percentage increase.
= 13%
= 0.13 (since percentages are decimals)
Original price = $59
So,
The current value of the stock is:
Current value.
= $59 x (1 + 0.13)
= $59 x 1.13
= $66.67 (rounded to the nearest cent)
Therefore,
The stock is currently worth $66.67.
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Please help if u can
Answer:
f(x) -> 2 as x -> -∞ and f(x) -> ∞ as x -> ∞
Step-by-step explanation:
f(x) -> 2 as x -> -∞ and f(x) -> ∞ as x -> ∞
*this is because the graph shows that the y value cannot pass by 2 as the x value constantly decreases and as x is increasing, there is just an arrow showing that the graph is constantly going up and therefore going to ∞
3. The table below shows the rates for two duplicating companies.
For what number of pages will the two duplicating stores charge the same amount?
Answer:
250 pages
Step-by-step explanation:
Write an expression for the cost of x pages for each of the companies. Then set the expressions equal, and solve for x, the number of pages.
Quick Copy: 5 + 0.06x
Copy Place: 10 + 0.04x
5 + 0.06x = 10 + 0.04x
0.02x = 5
x = 5/0.02
x = 250
Answer: 250 pages
Check
Quick Copy: 5 + 0.06(250) = 5 + 15 = 20
Copy Place: 10 + 0.04(250) = 10 + 10 = 20
For 250 copies, both places cost $20. 250 copies is the correct answer.
Noelle used 17 lemons to make lemonade. This was 85% of all the lemons
she bought. How many lemons did Noelle buy? *
Helpppppp please I have 30 more minutes
Answer:
20 lemons
Step-by-step explanation:
Let the number of lemons = 'x'
85% of x = 17
[tex]\frac{85}{100}*x = 17\\\\x = \frac{17*100}{85}\\x = 20[/tex]
Answer:
20 lemons
Step-by-step explanation:
Let the number of lemons = 'x'
85% of x = 17
please mark me the brainlyest
1. The Sky Train from the terminal to the rental car and long-term parking center is supposed to arrive every 12 minutes. The waiting times for the train are known to follow a uniform distribution. What is the average waiting time (in minutes)?2. The Sky Train from the terminal to the rental car and long-term parking center is supposed to arrive every 16 minutes. The waiting times for the train are known to follow a uniform distribution. Find the 20th percentile for the waiting times (in minutes).3. The Sky Train from the terminal to the rental car and long-term parking center is supposed to arrive every 18 minutes. The waiting times for the train are known to follow a uniform distribution. What is the probability of waiting more than 16 minutes given a person has waited more than 9 minutes?
Answer:
a
[tex]\mu = 6[/tex]
b
[tex]x= 3.2[/tex]
c
[tex]P( X> 16 | X > 9 ) = 0.222[/tex]
Step-by-step explanation:
Considering question 1
From the question we are told that
The waiting times for the train are known to follow a uniform distribution
i.e
[tex]X \~ \ \ \ Uniform(a =0 , b= 12)[/tex]
Generally the cumulative distribution function for uniform distribution is mathematically represented as
[tex]F(x) = \left \{ {{0 \ \ \ \ \ \ \\ \ \ \ for x < a } \atop {\frac{x - a}{b-a} \ \ \ \ \ \ for a \le x \ le b }} \atop { 1 \ \ \ \ \ \ \ \ \ \ \ for x > b}\right. [/tex]
Generally the average time is mathematically represented as
[tex]\mu = \frac{a+ b}{2}[/tex]
=> [tex]\mu = \frac{0+ 12}{2}[/tex]
=> [tex]\mu = 6[/tex]
Considering question 2
The waiting times for the train are known to follow a uniform distribution
i.e
[tex]X \~ \ \ \ Uniform(a =0 , b= 16)[/tex]
Generally the 20th percentile of the waiting time is mathematically represented as
[tex]f(x) = \frac{x- a }{b- a} = 0.2[/tex]
=> [tex]f(x) = \frac{x- 0 }{16- 0} = 0.2[/tex]
=> [tex]x= 3.2[/tex]
Considering question 3
The waiting times for the train are known to follow a uniform distribution
i.e
[tex]X \~ \ \ \ Uniform(a =0 , b= 18)[/tex]
Generally the probability of waiting more than 16 minutes given a person has waited more than 9 minutes
[tex]P( X> 16 | X > 9 ) = \frac{P( X > 16 \ \ n \ \ X > 9 )}{P( X > 9 )}[/tex]
=> [tex]P( X> 16 | X > 9 ) = \frac{ P(X > 16 )}{P( X > 9 )}[/tex]
=> [tex]P( X> 16 | X > 9 ) = \frac{\frac{18 - 16}{18} }{\frac{18 - 9}{9 } }[/tex]
=> [tex]P( X> 16 | X > 9 ) = 0.222[/tex]
The probability shows that the average waiting time is 6 minutes.
How to solve the probability?The average time will be calculated thus:
= (a + b)/2
= (0 + 12)/2
= 12/2
= 6 minutes
The 20th percentile for the waiting times will be calculated thus:
f(x) = (x - 0)/(16 - 0) = 0.2
x = 0.2 × 16
x = 3.2
Therefore, the 20th percentile for the waiting times is 3.2 minutes.
The probability of waiting more than 16 minutes given a person has waited more than 9 minutes will be calculated thus:
= [(18 - 16)/18] / [(18 - 9)/9]
= 0.222
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Clark needs to buy some new glasses. He has $70 to spend and the glasses that he wants only costs $30. He wants to spend the remainder of his money on new capes. Each cape costs $8. Which inequality represents the number of capes he can purchase? (5 points)
a
x ≥ 5
b
x ≤ 11
c
x ≤ 5
d
x ≥ 11
Answer: its either A or C, but im p sure its C
A bell tower casts a 60 cm shadow. At the same time a sculpture that is 4.5 meters tall casts a 15 cm shadow. How tall is the bell tower
Answer: 18
Step-by-step explanation:
x/4.5= 60/15
15x=270
X = 18cm
PLEASE HELP MEEEEEEEE
-4^2 = -16
(-4)^2 = 16
Hope this helps!
Answer:
I'm pretty sire its c
Step-by-step explanation:
with parentheses u get a positive 16 but qithout you het negative 16
Write the expression in the form a+bi.
√ -4 - √144
Answer:
-12 + 2i
Step-by-step explanation:
[tex] \sqrt{ - 4} - \sqrt{144} \\ \\ = \sqrt{ - 1 \times 4} - \sqrt{144} \\ \\ = \sqrt{ - 1} \times \sqrt{4} - \sqrt{144} \\ \\ = i \times 2 - 12 \\ \\ = - 12 + 2i \\ \implies \: a + bi[/tex]
5.4 Miles in 45 minutes
Answer:
7.2 miles per hour
Step-by-step explanation:
Please need help thank you
Answer: The answer is 9 flowers. Hope this helps!
Step-by-step explanation:
Keej is planning a road trip and needs to budget for gas. His car gets 26 mpg. He expects to drive 1092 miles. If a gallon of gas costs $1.69, how much should Keej budget to spend on gas
Answer:
if it is addition here 109369 or subtraction here 1090.04
Step-by-step explanation:
add or subtract
What is the quadratic regression equation that fits these data
Answer: The objective of this problem is to have you use a calculator and enter the data in to separate lists: one containing the x-values, and the other the correspondent y-values (following the same order). Once the data is entered, you need to access the regression tool and request a quadratic form of regression. You should get and image and resulting function as shown in the attached image.
plz help me thanks so mycghh
Answer:
(4). g(2) > f(2) False
Step-by-step explanation:
(1). (f(0) = 2) > (g(0) = - 4) (True)
(2). f( - 4) = 4( - 4 ) + 2 = - 14
g( - 4) = (5/2)(- 4) - 4 = = - 14
f( - 4) = g( - 4) (True)
(3). f(6) = 4(6) + 2 = 26
g(12) = (5/2)(12) - 4 = 26
f(6) = g(12) (True)
(4). g(2) = (5/2)(2) - 4 = 1
f(2) = 4(2) + 2 = 10
g(2) > f(2) (False)
Miss Garcia an art teacher is buying supplies for her next unit on ceramics. Her 25th six graders are making mugs and jugs estimated each one will use about three force of a pound of clay. She also wants to have 20 pounds of clay for seventh graders sculptures. If Miss Garcia has 5 2/5 pounds of Clay left over from last year how much more clay does she need
1/2 Answer: 1/2
Step-by-step explanation:
Answer:
33 7/20
Step-by-step explanation:
First you multiply the number of students performing in the problem (25) to the fraction 3/4 as stated in the problem itself.
25 * 3/4 = 18 3/4
Then you use the answer from the previous step and add it by the expected amount of pound of clay (20)
18 3/4 + 20 = 38 3/4
As from the last step, we use that number and subtract it by the leftover clay (5 2/5)
38 3/4 - 5 2/5 = 33 7/20
Answer:
33 7/20
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2/5 of 7/10. Express in simplest form
Answer:
7/25
Step-by-step explanation:
Of means multiply in math (most of the time).
So multiply.
2/5 x 7/10 = 14/50 divided by 2/2 = 7/25
plz help due in 10 minutes
Answer:
The answer is D.
Step-by-step explanation:
hope this helps
Given h(x)=-5x+1, solve for a when h(x) = - 4 .
Answer:
x = 1
Step-by-step explanation:
h(x) = - 5x + 1, h(x) = - 4
- 4 = - 5x + 1
- 5 = - 5x
x = 1
If we solve for the value of x in function h(x) = -5x + 1 where , h(x) = -4 , then it will be equal to 1.
What is a function ?
A function is a relationship between inputs and outputs where each input has precisely one output and the output can be linked to its input.
It is given that the function h(x) is given by :
h(x) = -5x + 1
We have to solve to get the value of x , if the value of h(x) is equal to -4.
So , let's solve the given function to get the value of x :
h(x) = -5x + 1
or
-4 = -5x + 1
reordering the like terms :
-5 = -5x
dividing by 5 on both sides :
-1 = -x
multiplying by -1 on both sides :
x = 1
Therefore , if we solve for the value of x in function h(x) = -5x + 1 where , h(x) = -4 , then it will be equal to 1.
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4x- (3x+2)= 7x-2
What’s the answer?
Answer:
first remove the parrenteses
so from this 4x- (3x+2)= 7x-2
to this 4x- 3x+2= 7x-2
then change the + to a -
so 4x- 3x- 2= 7x-2
then cancel equal terms on both sides of the equation so
4x- 3x= 7x
then collect like terms x =7x
then move the variable to the left hand side and change the sign
x- 7x = 0
next collect like terms
-6x =0
then divide both sides of the eqution by -6
so the awnse is x=0
Step-by-step explanation: