Answer:
1.17e+16
hope this helps! (if right pls mark brainy) thanks!
What are the solutions to the quadratic equation 4x^2 = 64?
Answer: 4x^{2} =64
x^{2} =16
x= \sqrt{16}
The square root of 16 is either positive four or negative four.
Answer:
x = 4 or x = -4
Step-by-step explanation:
4x² = 64
4x² - 64 = 0
(2x + 8) (2x - 8) = 0
x = ± 4
Dan buys a car for £700. It depreciates at a rate of 5.5% per year. How much will it be worth in 6 years? Give your answer to the nearest penny where appropriate.
The correct answer is:
£498.53
A beam of light is transmitted through a medium with an index of refraction of 1.46. What is the speed of the light beam as it travels through the medium?
Answer:
The speed of light through the medium is 2.1 * 10^8 m/s
Step-by-step explanation:
In this question, we are asked to calculate the speed of light beam as it travels through a medium given the refractive index of the medium.
Mathematically;
n = c/v
where n is the refractive index, v is the speed of light through the medium and c is the speed of light in a vacuum.
From the question, we can identify that the refractive index is 1.46 and the speed of light through vacuum is 3 * 10^8 m/s
Rearranging the equation; we have;
v = c/n
v = (3 * 10^8)/1.46
v = 2.1 * 10^8 m/s
If you vertically stretch the exponential function f(x) = 2^x by a factor of 5, what is the equation of the new function?
A. g(x) = 1/5 x 2^x
B. g(x) = 5 x 2^x
C. g(x) = 2 x 5^x
D. g(x) = 2^5x
Answer:
B
Step-by-step explanation:
In this case we multiply the function f(x) = 2^x by 5, so the correct answer is B.
what is the slope of a line perpendicular to the line whose equations is x-y=-3?
The slope of a line perpendicular to the line with equation x - y = -3 is -1, as perpendicular lines have slopes that are negative reciprocals of each other.
The slope of the line perpendicular to the line whose equation is x - y = -3 can be found by first writing the equation in the slope-intercept form (y = mx + b) to determine the slope of the given line. By rearranging the given equation to y = x + 3, we can see that the slope (m) of the line is 1. Since perpendicular lines have slopes that are negative reciprocals of each other, the slope of a line perpendicular to this one would be the negative reciprocal of 1, which is -1. Therefore, the slope of the line perpendicular to the line with equation x - y = -3 is -1.
Hermosa Menendez is employed by Chemical Industries. She has a family membership in the group preferred provider organization (PPO). The annual premium is $6,180. Her employer pays 75 percent of the premium.
Answer:
a) $4635
b) $1545
c) $29.7 per week
Step-by-step explanation:
Hermosa Menendez is employed by Chemical Industries. She has a family membership in the group preferred provider organization (PPO). The annual premium is $6,180. Her employer pays 75 percent of the premium.
a) How much does the employer pay annually
b) How much does she pay annually
c) How much is deducted each week as her weekly cost
a)
Given that:
The annual premium = $6180
Employers percent = 75% = 0.75
The money the employer pays annually = Annual premium × Employers percent = $6180 × 0.75 = $4635
b)
Since the employers percent = 0.75, her percent = 1 - 0.75 = 0.25
The money that she would pay annually = Annual premium × her percent = $6180 × 0.25 = $1545
c)
There are 52 weeks in a year.
The money she would pay weekly = money that she would pay annually / 52 weeks = $1545 / 52 weeks = $29.7 per week
Answer:
A. $ 4,635
B. $ 1,545
C. $ 29.72 (Rounding to the next cent)
Correct statement and questions:
Hermosa Menendez is employed by Chemical Industries. She has a family membership in the group preferred provider organization (PPO). The annual premium is $6,180. Her employer pays 75 percent of the premium.
a) How much does the employer pay annually
b) How much does she pay annually
c) How much is deducted each week as her weekly cost
Source:
Previous question that can be found at brainly
Step-by-step explanation:
A. The employer will pay annually the 75% of the annual premium:
6,180 * 0.75 = $ 4,635
B. Hermosa will pay annually the difference:
6,180 - 4,635 = $ 1,545
C. Hermosa will pay weekly:
1,545/52 = $ 29.72 (Rounding to the next cent)
for what value of x does the function y=2/3x+1 have the same x and y coordinate
Answer:
3
Step-by-step explanation:
[tex]y=\frac{2}{3}x +1[/tex]
If [tex]x[/tex] is 3, then
[tex]y =\frac{2}{3}(3) +1[/tex]
[tex]y=2+1[/tex]
[tex]y=3[/tex]
Both [tex]x[/tex] and [tex]y[/tex] equal 3. So, the value of [tex]x[/tex] must be 3 for the function to have the same coordinate for [tex]x[/tex] and [tex]y[/tex].
3(n+2)=9(6-n)
help me please
Answer:
n=4
Step-by-step explanation:
3n+6 = 54-9n
3n+9n = 54 - 6
12n = 48
n=4
Answer:
4
Step-by-step explanation:
3n+6=54-9n
3n+9n=54-6
12n=48
n=48/12
n=4
MARK AS BRAINLIESTAND FOLLOWWhat effect does a negative have when placed Inside the parentheses?
Answer: it makes a horizontal shift. for example: (x-4) means the graph moved 4 units to the RIGHT.
Step-by-step explanation: it is essentially the opposite of what you think if it's inside the parenthesis.
The number of yards of fabric needed for Robs costume is (7/8+1/2+1 3/4)÷2. How does the amount of fabric needed for Robs costume compare to the amount needed for jimmys costume ?Explain
The amount of fabric needed for Jimmy's costume is not stated, we can only determine the amount needed for Rob's costume, which makes it impossible to compare the amounts needed for both of their costumes. If this omission was an error, then you can find the difference between these amounts if the amount needed for Jimmy's costume is stated explicitly.
Step-by-step explanation:
The number of yards of fabric needed for Robs costume is (7/8+1/2+1 3/4)÷2
Assuming 1 3/4 is a mixed fraction.
= (7/8 + 1/2 + 7/4) ÷ 2
= (7 + 4 + 2) ÷ (8 × 2)
= 13/16 yards
Suppose 2 yards of fabric is needed for Jimmy's costume, then comparing with Rob's yards, we see that Jimmy's costume requires (2 - 13/16 = 19/16) more yards than Rob's costume.
2. A medical study tests a new cough medicine on 4250 people. It is effective for 3982 people. What is the experimental probability that the medicine is effective? For a group of 9000 people, predict the approximate number of people for whom the medicine will be effective.
Answer:
For a 9000 people, the approximate number of people for whom the medicine will be effect is 8432 people
Step-by-step explanation:
Here we have probability is given by
Probability = [tex]\frac{Number\, of \, Success}{Number\, of \, Trials}[/tex] Where:
Number of success = 3982 and
Number of trials = 4250. therefore;
[tex]Probability \, of \, Success = \frac{3982}{4250} = \frac{1991}{2125}[/tex]
Therefore, when the medicine is used on 9000 people, the approximate number of people for whom the medicine will be effect is given by;
[tex]\frac{1991}{2125} = \frac{x}{9000} \rightarrow x \times2125 = 1991 \times 9000\\x = \frac{1991 \times 9000}{2125} = \frac{143352}{17} = 8432\frac{8}{17}[/tex]
or ≈ 8432 people.
A company is designing a new cylindrical water
bottle. The volume of the bottle will be 162 cm3.
The height of the water bottle is 7.7 cm. What is
the radius of the water bottle? Use 3.14 for It.
Answer:
21
Step-by-step explanation:
To find the area of a cylinder you mutliply radius by height.
r*h = 162
If we know the height is 7.7, substitute it for h.
r*7.7 = 162.
Or:
162 / 7.7
Which gives you 21.03, or 21.
A fish tank contains as many goldfish as mollies, and there are 6 more guppies than goldfish. If the total combined number of fish in the tank is 22, how many mollies are in the tank?
Answer:
8 mollies
Step-by-step explanation:
22-6=16
16/2=8 mollies
Answer:
5
Step-by-step explanation:
Students in a college statistics class want to conduct a survey to determine the percentage of students in the school who are willing to pay a fee for participating in extracurricular activities. thirty students are randomly selected to complete the survey from each of the freshman, sophomore, junior, and senior classes. this plan is an example of which type of sampling?
a. convenience sampling
b stratified sampling
c. simple random sampling
d.a cluster sampling
b. stratified sampling
The plan to determine the percentage of students in a school willing to pay a fee for participating in extracurricular activities is an example of stratified sampling. In stratified sampling, the population is divided into subgroups or 'strata' that share similar characteristics, and a random sample is taken from each stratum. In this case, the classes (freshman, sophomore, junior, and senior) serve as the strata, and thirty students from each class are randomly selected to complete the survey. This approach ensures that each subgroup is adequately represented in the sample, making the results more reflective of the entire school population.
I’ll give thanks to those that help of course. I promise
Answer: 74
Step-by-step explanation:
Answer:
93
Step-by-step explanation:
73+ 21
For this question please tell me if I'm right or wrong. If I'm wrong please correct me.
Please use the following image below in order to answer the question correctly:
Tell whether NM is best described as a radius, chord, diameter, secant, or tangent of ⊙P.
What can NM be best described as?
Please show all the work on how you got your answer. ( I'm not asking for an explanation. All I want is the work shown so I can understand how you got your answer)
Answer:
NM would actually represent a chord. Tangent are lines that would be outside of the circle.
Answer:
B) chord
Step-by-step explanation:
NM are two points on the circumference and the segment doesn't pass through the centre, so it's a chord
There are 135 people in a sport centre. 73 people use the gym. 59 people use the swimming pool. 31 people use the track. 19 people use the gym and the pool. 9 people use the pool and the track. 16 people use the gym and the track. 4 people use all three facilities. Given that a randomly selected person uses the gym and the track, what is the probability they do not use the swimming pool?
The probability that a person who uses the gym and the track does not use the swimming pool is 3/4.
Explanation:We are asked to find the probability that a person who uses the gym and the track does not use the swimming pool. The number of people who use both the gym and the track is 16. Among these, 4 also use the pool, which means that 16 - 4 = 12 people use just the gym and the track, and not the pool. The probability that a randomly selected person who uses the gym and the track does not use the pool is calculated as the number of gym-and-track users who don't use the pool divided by the total number of gym-and-track users, which is 12/16 or 3/4.
Argue whether or not you believe using a sample of students from your school's cafeteria (you recruit the next 100 people to visit the cafeteria to participate) may or may not yield biased estimates based on the variable being measured/research question being investigated in each of the following situations.
a. Using the proportion of students with Type O blood to learn about the proportion of U.S. adults with Type O blood
b. Using the proportion of students who eat fast food regularly to learn about the proportion of U.S. college students who eat fast food regularly
Answer: A. Representative, since blood types are probably not different among students at the cafeteria compared to the U.S. population, B. Not representative, since students in the cafeteria may eat most of their meals at the cafeteria instead of eating fast food
Step-by-step explanation:
I Hope that this helps! :)
a) The variable used gives the appropriate estimate.
b) The variable used does not give the appropriate estimate.
What is Research in statistic?Statistical research is the methodical creation of enhanced or novel statistical techniques based on statistical theory and probability.
A property that can be measured and given varied values is known as a variable. Variables include things like height, age, income, province of birth, school grades, and kind of dwelling. There are two basic types of variables: category and numeric.
Given:
a) Since kids in the cafeteria probably have the same blood types as people in the United States.
So, it can be Representative.
b) As opposed to eating fast food, students may eat the majority of their meals in the cafeteria.
So, this is not representative.
Learn more about Research here:
https://brainly.com/question/29262068
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A punch recipe calls for 4 cups of lemonade to 3 cups of sparking juice.If sara is making 42 cups of punch then how many cups of lemonade does she need
For 42 cups of punch 168 cups lemonade is used.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
We have, For one punch 4 cups of lemonade to 3 cups of sparking juice is used.
Now, for 42 cups the amount of Lemonade needed
= 4 x 42
= 168 cups
and, Amount of Sparking juice needed
= 3 x 42
= 126 cups
Learn more about Unitary Method here:
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find the value of sec (θ) for an angle θ in standard position with a terminal ray that passes through the point (4, -3)
Answer:
d. 5/4
Step-by-step explanation:
The secant of an angle with a terminal ray through the point (4, -3) is the distance to the origin divided by the x-coordinate, or
[tex]\sqrt{4^{2}+(-3)^2}[/tex] / 4 = 5/4
Answer:
d. 5/4
Step-by-step explanation:
(4,-3) is in quadrant 4
cos/sec is positive in this quadrant
Hypotenuse = sqrt(3² + 4²)
sqrt(25)
5
cos(theta) = 4/5
sec(theta) = 5/4
Ms. Lindsey surveyed a random sample of students at her school to determine how they got to school. The results are shown below: ∙ 8 students walk or ride a bike ∙ 12 students ride in a car ∙ 25 students take the bus Based on the results of the survey, how many of the 900 students in 7th grade do NOT take the bus to school? Please explain I'm very confused.
What conclusions can be drawn about finding the quotient in scientific notation? Check all that apply. Start Fraction (9.6 times 10 Superscript negative 8 Baseline) Over (3.2 times 10 Superscript 4 Baseline) End Fraction A.The coefficient of the solution is 6.4, the difference of the original coefficients. B.The exponent of the solution is –12, the difference of the original exponents. C.The coefficient of the solution must be greater than or equal to one but less than 10. D.The quotient is 3.0 × 10-12 E.The solution is a very large number.
Answer:
B.The exponent of the solution is –12, the difference of the original exponents.
C.The coefficient of the solution must be greater than or equal to one but less than 10.
D.The quotient is 3.0 × [tex]10^{-12}[/tex]
Step-by-step explanation:
We are finding the quotient of the expression below in scientific notation
[tex]\dfrac{9.6X10^{-8}}{3.2X10^4} \\=\dfrac{9.6}{3.2}X10^{-8-4}\\ =3 X 10^{-12}[/tex]
The following conclusions can be drawn
B.The power of 10 in the solution is –12, the difference of the original exponents.
C.The coefficient is 3, which is greater than or equal to one but less than 10.
D.The quotient is 3.0 × [tex]10^{-12}[/tex]
To determine how a city's residents feel about building a new youth center, a group considers surveying 50 random children at a local elementary school. Why would this result in a biased sample? Select three answers.
Answer:
This would most probably result in biased sample since only a specific part of the community is being surveyed that does not represent all of the community.
Step-by-step explanation:
A survey is being conducted to determine how a city's residents feel about building a new youth center.
They are considering to survey 50 random children at a local elementary school.
This would most probably result in biased sample since only a specific part of the community is being surveyed that does not represent all of the community.
Moreover, it is likely that the students of elementary school might not even have any interest in youth center so results would be biased.
Therefore, it is suggested to include a variety of samples that is surveying different age groups that covers all of the community.
Answer:
1. The survey is only considering elementary school students, but not children in middle school or high school.
2. The survey is also not considering any adult at all. Most likely they represent the majority of the local residents.
3. Finally, it's important to understand in advance what would be the main differences with the current youth center and include those specific questions in the survey. It's important to determine if the new youth center will fill the gap.
Step-by-step explanation:
John asked the players on his hockey team their height in
inches and listed the results below. What is the range of
the data set? Round to the nearest tenth when necessary
76, 72, 70, 68, 72, 62
Answer:
70
Step-by-step explanation:
Numbered disks are placed in a box and one disk is selected at random. If there are 6 red disks numbered 1 through 6, and 2 yellow disks numbered 7 through 8, find the probability of selecting a red disk, given that an odd-numbered disk is selected.
Answer:
[tex]\frac{3}{4}[/tex]
Step-by-step explanation:
Total number of red disk=6
Total number of yellow disk=2
Total disk=6+2=8
Odd number=1,3,5,7=4
Odd number on red disk=1,3,5=3
Probability,[tex]P(E)=\frac{favorable\;cases}{total\;number\;of\;cases}[/tex]
Using the formula
The probability of getting odd number disk=[tex]\frac{4}{8}=\frac{1}{2}[/tex]
The probability of getting odd numbered red disk=[tex]\frac{3}{8}[/tex]
The probability of selecting a red disk,given that an odd numbered disk is selected=[tex]\frac{\frac{3}{8}}{\frac{1}{2}}=\frac{3}{8}\times 2=\frac{3}{4}[/tex]
Using conditional probability
[tex]P(A/B)=\frac{P(A\cap B)}{P(B)}[/tex]
7.97 as a mixed fraction and a improper fraction
Answer:
7 97/100
797/100
Step-by-step explanation:
A builder is putting in a circular patio. Find the circumference by using 22/ 7 as an estimate for . What is the circumference if the radius is 5 yards.
Answer:
110/7 yards
Step-by-step explanation:
Given:-
- The radius of circular patio, r = 5 yards
Find:-
What is the circumference of circular patio
Solution:-
- The circumference "C" of a circle is given as:
[tex]C =2 *\pi*r\\\\\pi = \frac{22}{7} \\\\ C = 2*\frac{22}{7}*5\\\\C = \frac{110}{7} yards[/tex]
- The circumference of the circular patio is 110 / 7 yards.
The figure shows the location of 3 points around a lake. The length of the lake, BC, is also shown.
(Figure is not drawn to scale.)
Which of the following options is closest to the distance (in miles) between points A and B? (5 points)
Group of answer choices
3.46 miles
4.24 miles
4.90 miles
5.92 miles
Answer:
It’s in between a and b
Step-by-step explanation:
Answer:
i believe the answer is a
t is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is 25 74 189 75 None of the above answers is correct
Answer:
The sample size needed to be taken is approximately 74.
Step-by-step explanation:
To get alpha; we have 1 - 0.95 = 0.05
Therefore, [tex]z_{\frac{a}{2} } = \frac{0.05}{2} = 0.025[/tex]
The we look up z* in a Standard Normal table where α = 0.025 area in each tail.
From the table, z* = 1.96
From the question variance is 484, then the standard deviation is 22
Standard deviation = [tex]\sqrt{Var(x)} = \sqrt{484} = 22[/tex]
And margin of error is 5 or less
The formula for margin of error is given as:
margin of error = [tex]\frac{(z^{*}) (SD)}{\sqrt{n} }[/tex]
[tex]5 = \frac{1.96 * 22}{\sqrt{n} } \\5 = \frac{43.12}{\sqrt{n} } \\5 * \sqrt{n} = 43.12\\(5)^{2} * (\sqrt{n} )^{2} = (43.12)^2\\25 * n = 1859.3344\\25n = 1859.3344\\\frac{25n}{25} = \frac{1859.3344}{25} \\n = 74.373376\\n = 74[/tex]
The approximate value of n is 74.
Due to a manufacturing error, 2 cans of regular soda were accidentally filled with diet soda and placed into a24 -pack.
Suppose that two cans are randomly selected from the 24-pack. Complete parts (a) through (c).
(a) Determine the probability that both contain diet soda.
P(both diet) = (Round to four decimal places as needed.)
(b) Determine the probability that both contain regular soda.
P(both regular) = (Round to four decimal places as needed.)
Would this be unusual?
No
Yes
(c) Determine the probability that exactly one is diet and exactly one is regular.
P(one diet and one regular) = (Round to four decimal places as needed.)
Answer:
a) 1/48 or 2.0833%
b) 46/48 or 95.8333%
no it would not be unusual
c) I'm not sure sorry