Answers
Related Questions
The area of a rectangle is 33ft^2. The length is 8 feet more than the width. What are the dimensions of the rectangle?
Answers
Answer:
[tex]length = (8 + x) \: feet\\ width = x \: feet \\ area = length \times width \\ 33 = (8 + x)x \\ 33 = 8x + {x}^{2} \\ {x}^{2} + 8x - 33 = 0 \\ (x - 3)(x + 11) = 0 \\ (x + 11) \: is \: neglected \: since \: it \: is \: negative \\ therefore : x = 3 \\ dimensions \\ length = (8 + 3) = 11 \: feet \\ width = 3 \: feet[/tex]
What is the sales tax
On a camera priced at $110 if the sales tax rate is 6.1%
WILL GIVE BRAINKISR
X
X
X
Answers
Answer:
The sales tax would be $6.71 :)
Step-by-step explanation:
110 x 0.061 = 6.71
116.71
Step-by-step explanation:
if the tax rate is 6.1 that wiild equal 6.71 then you would add 6.71 to 110 which the answer would be 116.71
Researchers asked 250 families whether or not they were homeowners and how many cars they had. Their responses are summarized in the following table.
No car or one car Two or more cars
Homeowner
25
90
Not a homeowner
45
90
(a) what percentage of the families are homeowners?
(b) What percentage of the familles have two or more cars?
х
S
?
(b) 1%
Explanation
Check
2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy. Accessibility
Answers
Answer:
A = 46%
B = 72%
Step-by-step explanation:
Need answers ASAP please
Answers
Answer:
angle classification is acute
side classification is equilateral
Step-by-step explanation:
What is the right answer is this problem?
Answers
Answer:
C
119 + 36 + 25 = 180
Step-by-step explanation:
Explain why someone would use scientific notation to write a number rather than standard notation.
Answers
Answer:
the extra big numbers can be written easily by the scientific notation
Answer:
Scientific Notation was developed in order to easily represent numbers that are either very large or very small.
Step-by-step explanation:
Can I get some help on this can’t find any of the answers anywhere
Answers
Answer:
3(9)+20=47
Step-by-step explanation:
47 inches after 9 weeks
What is the arc measure of major arc ABC in degrees?
Answers
Answer:
123847323247647525547824817703412
Shamus owes his parents $162. He pays them 60% of the $45 he earns as a soccer referee each week. How many weeks will it take Shamus to pay back all of the money he owes his parents?
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60% of 45 would be 27
He pays his parents $27 each week
Divide 162 and 27
162/27=6
It will take 6 weeks for him to pay back his parents
plzzz i’ll give brainliest
Answers
Answer:
5.83
Step-by-step explanation:
Using Pythagoras Theorem,
[tex] \sqrt{ {5}^{2} + {3}^{2} } [/tex]
[tex] = \sqrt{34} [/tex]
[tex] = 5.83095...[/tex]
= 5.83 units (rounded to the nearest hundredth) +
PLZZ HELP. I WILL BE MARKING BRAINLIEST
Answers
Answer:
The question and choices are cut off, could you repost it?
Step-by-step explanation:
Please answer ALL and if you do i will give brainliest. URGENT
Answers
Answer:
16: 5.934 radians
17: 300 degrees
18: 4.188 radians
19: 130 degrees
Calculate the area of this triangle
Answers
Answer:
60 cm^2
Step-by-step explanation:
Answer:
Area = 60
Step-by-step explanation:
Formula: bh/2
15*8/2
120/2
= 60
Find the total surface area of a sphere radius being 7cm
Answers
Answer:
A≈615.75m²
Step-by-step explanation:
Solution
A=4πr2=4·π·72≈615.75216m²
Hope this helped!!!
PLEASE HELP DESPERATE NEED DUE IN 2 MINS.
Answers
count the number of triangles,calculate the area then multiply by the no of triangles and again back to rectangle
PLS HELP ASAP (20 points)
A group of friends are going to a local pizzeria. One medium pizza costs $12.50. The friends spent less than $55. They purchased two pitchers of soda for a total of $8.99. How many medium pizzas could the group purchase? Write and solve an inequality. Show your work.
Answers
Answer:
whats the answer? And equation?
Step-by-step explanation:
What is the
average rate of change between:
x = 1 and x = 2?
x = 2 and x = 3?
X = 3 and x = 4?
Answers
1.
Isha wants to paint her attic. It takes 1 gallon of paint to paint 1 square foot of the surface. How many gallons of paint does Isha need to paint the wa
in the attic shown below?
8 feet
15 feet
5 feet
6 feet
Answers
Answer:
8
Step-by-step explanation:
Use linear regression to find a
function that fits the following
points.
(0,5), (2,-13)
Answers
Answer:
Function that fits the points [tex](0,5),\,(2,-13)[/tex] is given by [tex]x+9y=45[/tex]
Step-by-step explanation:
Let [tex](x_1,y_1)=(0,5),\,(x_2,y_2)=(2,-13)[/tex]
Slope of a line joining points [tex](x_1,y_1),\,(x_2,y_2)[/tex] is given by [tex]m=\frac{x_2-x_1}{y_2-y_1}[/tex]
[tex]=\frac{2-0}{-13-5}[/tex]
[tex]=\frac{2}{-18}[/tex]
[tex]=\frac{-1}{9}[/tex]
Equation of a line joining points [tex](x_1,y_1),\,(x_2,y_2)[/tex] is given as follows:
[tex]y-y_1=m (x-x_1)[/tex]
[tex]y-5=\frac{-1}{9}(x-0)\\y-5=\frac{-1}{9}x\\9(y-5)=-x\\9y-45=-x\\x+9y=45[/tex]
PLZHELPON TIMER WILLGIVE BRAINLIEST FORRIGHTANSWER QUESTION IS NOT THAT HARD I THINK
What is the median of the values in the dot plot?
Enter your answer in the box.
Answers
Answer:
The median would be 5
Step-by-step explanation:
You could slash out the dots to get 5.
Answer:
5
Step-by-step explanation:
The times when goals are scored in hockey aremodeled as a Poisson process inMorrison (1976). For such a process, assume that the average time between goals is 15 minutes. (i) In a 60-minute game, find the probability that a fourth goal occurs in the last 5 minutes of the game. (ii) Assume that at least three goals are scored in a game. What is the mean time of the third goal
Answers
This question is incomplete, the complete question is;
The times when goals are scored in hockey are modeled as a Poisson process in Morrison (1976). For such a process, assume that the average time between goals is 15 minutes.
(The parameter of the hockey Poisson Process is lambda = 1/15 )
(i) In a 60-minute game, find the probability that a fourth goal occurs in the last 5 minutes of the game?
(ii) Assume that at least three goals are scored in a game. What is the mean time of the third goal?
Answer:
i) the probability that a fourth goal occurs in the last 5 minutes of the game is 0.068
ii) The mean time of the third goal is 33.5 minutes
Step-by-step explanation:
Given the data in the question;
The parameter of the hockey Poisson Process λ = 1/15
i)
Let us represent the probability of a fourth goal in the last 5 min in a 60 min game with X.
Thus, we find the probability that X is greater than ( 60min - 5min) and less than or equal to 60min
so;
p( 55 < X ≤ 60 ) = [tex]\frac{1}{6} \int\limits^{60}_{55} (\frac{1}{15})^4 ( t^3) (e^{-t}) dt[/tex]
p( 55 < X ≤ 60 ) = 0.06766 ≈ 0.068
Therefore, the probability that a fourth goal occurs in the last 5 minutes of the game is 0.068
ii)
Also let us represent the probability that at least 3 goals are scored in the game with X
Now, the mean time of the third goal will be;
P(X|X < 60 ) = [tex]\frac{1}{P(X<60)} \int\limits^0_{60} t\frac{(1/15)^3 (t^2) ( e^{-t/15}) }{2} dt[/tex]
P(X|X < 60 ) = 25.49 / 0.76
P(X|X < 60 ) = 33.539 ≈ 33.5
Therefore, the mean time of the third goal is 33.5 minutes
The amount of time (in minutes per day) spent on social media for a sample of 10 teens has a mean of 186.7 and a sample standard deviation of 19.99. An independent sample of 8 older adults has a mean of 93.5 minutes with a sample standard deviation of 32.01. Assume that the time spent on social media is approximately normally distributed for each group. a) Determine the value of the test statistic to test H subscript 0 colon space mu subscript t e e n end subscript equals mu subscript o l d e r end subscript against H subscript A colon space mu subscript t e e n end subscript not equal to mu subscript o l d e r end subscript. b) Determine the p-value or critical value for this test at alpha equals 0.05. c) What is your conclusion about whether the two age groups spend the same average amount of time on social media
Answers
A right triangle has a leg of 12 cm and a hypotenuse of 19 cm.
What is the length of the other leg?
Round to the nearest tenth.
-----------------------------------------
7.0 cm
14.7 cm
22.5 cm
217.0 cm
Answers
Answer:
14.7 cm
Step-by-step explanation:
Using Pythagoras Theorem,
The length of the other leg
[tex] = \sqrt{ {19}^{2} - {12}^{2} } [/tex]
[tex] = \sqrt{217} [/tex]
[tex] = 14.730919...[/tex]
= 14.7 cm (rounded to the nearest tenth)
An insurance company classifies drivers as low risk, medium risk, high risk. Of those insured, 60% are low-risk, 30% are medium-risk, and 10% are high risk. After a study, the company finds that during a1-year period, 1% of the low risk drivers had an accident, 5% of the medium risk drivers had an accident, and 9% of the high-risk drivers had an accident.
Required:
a. If a driver had an accident during the year, find the probability that the driver is selected as a medium-risk driver.
b. If a driver who had an accident during the I-year period is selected, what is the probability that he has been classified as high-risk?
c. If two drivers who had an accident during the I -year period are selected, what is the probability that at least one of them has been classified as high-risk?
Answers
Answer:
a. 0.5 = 50% probability that the driver is selected as a medium-risk driver.
b. 0.3 = 30% probability that he has been classified as high-risk
c. 0.51 = 51% probability that at least one of them has been classified as high-risk.
Step-by-step explanation:
To solve this question, we need to understand conditional probability, for items a and b, and the binomial distribution, for item c.
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
a. If a driver had an accident during the year, find the probability that the driver is selected as a medium-risk driver.
Event A: Had an accident
Event B: Medium-risk driver
Probability of having an accident:
0.01 of 0.6(low risk)
0.05 of 0.3(medium risk)
0.09 of 0.1(high risk)
So
[tex]P(A) = 0.01*0.6 + 0.05*0.3 + 0.09*0.1 = 0.03[/tex]
Probability of having an accident and being a medium risk driver:
0.05 of 0.3. So
[tex]P(A \cap B) = 0.05*0.3 = 0.015[/tex]
Desired probability:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.015}{0.03} = 0.5[/tex]
0.5 = 50% probability that the driver is selected as a medium-risk driver.
b. If a driver who had an accident during the I-year period is selected, what is the probability that he has been classified as high-risk?
Event A: Had an accident
Event B: High risk driver.
From the previous item, we already know that P(A) = 0.03.
Probability of having an accident and being a high risk driver is 0.09 of 0.1. So
[tex]P(A \cap B) = 0.1*0.09 = 0.009[/tex]
The probability is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.009}{0.03} = 0.3[/tex]
0.3 = 30% probability that he has been classified as high-risk
c. If two drivers who had an accident during the I -year period are selected, what is the probability that at least one of them has been classified as high-risk?
0.3 are classified as high risk, which means that [tex]p = 0.3[/tex]
Two accidents mean that [tex]n = 2[/tex]
This probability is:
[tex]P(X \geq 1) = 1 - P(X = 0)[/tex]
In which
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{2,0}.(0.3)^{0}.(0.7)^{2} = 0.49[/tex]
[tex]P(X \geq 1) = 1 - P(X = 0) = 1 - 0.49 = 0.51[/tex]
0.51 = 51% probability that at least one of them has been classified as high-risk.
What else would need to be congruent to show that ABC DEF by SAS?A.C FB. C. D.A D
Answers
Your answer is D
A statewide real estate sales agency, Farm Associates, specializes in selling farm property in the state of Nebraska. Its records indicate that the mean selling time of farm property is 90 days. Because of recent drought conditions, the agency believes that the mean selling time is now greater than 90 days. A statewide survey of 100 farms sold recently revealed that the mean selling time was 94 days, with a standard deviation of 22 days.
Required:
At the 0.10 significance level, has there been an increase in selling time?
Answers
Answer:
The right answer is "1.818".
Step-by-step explanation:
The given values are:
a = 0.1
[tex]\bar{x} = 94[/tex]
[tex]\mu = 90[/tex]
Now,
The test statistic will be:
⇒ [tex]t=\frac{\bar{x}-\mu}{\frac{s}{vn} }[/tex]
On substituting the given values, we get
⇒ [tex]=\frac{94-90}{\frac{22}{10} }[/tex]
⇒ [tex]=\frac{4}{2.2}[/tex]
⇒ [tex]=1.818[/tex]
Use the diagram below to find the measure of CAD.
Answers
Answer:
[tex]\angle CAD = 20^\circ[/tex]
Step-by-step explanation:
Given
[tex]\angle CBD = 20^\circ[/tex]
Required
Determine the measure of [tex]\angle CAD[/tex]
To calculate CAD, we have:
[tex]\angle CAD = \angle CBD[/tex] --- angle in the same segment
Hence:
[tex]\angle CAD = 20^\circ[/tex]
Derrick joined a club that costs $7 per day. Is the cost over time a proportional or non-proportional relationship?
Answers
Answer:
it is proportional
Step-by-step explanation:
Answer:
it is proportional
Step-by-step explanation:
The product (x + 5)(x - 1)(x + 2) is equal to:
Answers
Step-by-step explanation:
(x²-x+5x-5)(x+2)
(x²+4x-5)(x+2)
x³+2x²+4x²+8x-5x-10
x³+6x²+3x-10
is 22,29,36 a right angle
Answers
Answer:
I think No..............
Step-by-step explanation:
they are not right angle .
hope it helps.