Answers
For the given function, we have that:
The domain is [-4,4].The function has no zeros.The function is positive for x ≤ 0.The function is negative for x > 0.What is the domain of a function?The domain of a function is the set that contains all possible input values for the function. In a graph, it is the set that contains all the values of x of the function.
Hence, the domain is [-4,4] for the given function.
What are the zeros of a function?The zeros of a function are the values of x for which f(x) = 0, on the graph they are the values of x when the function crosses the x-axis.
For this problem, the function does not cross the x-axis, hence it has no zeros.
When a function is negative and when it is positive?Looking at the graph of the function, we have that:
It is positive if it is above the x-axis.It is negative if it is below the x-axis.Hence, for the function in the given graph:
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Related Questions
If n×n×n=60 , then which of the following best approximates n ?
Answers
[tex] \eta \times \eta \times \eta = 60 \\ \eta {}^{3} = 60 \\ \eta = \sqrt[3]{60} \approx3.91487[/tex]
Can someone do 1-20 I give Brainly
Answers
Answer:
The square root of 36 is 6 8 cube root is 2 125 cube root is 5 The rationalisation of 12 is 2×2×3
Rewrite (132 + 228) using factoring.
4(32 + 57)
6(22 + 222)
4(33 + 57)
16(116 + 14)
Answers
The expression using factoring is 4 * (33 + 57)
How to rewrite the expression using factoring?The expression is given as
(132 + 228)
Factor out 2 from the expression
So, we have
(132 + 228) = 2 * (66 + !14)
Factor out 2 from the expression
So, we have
(132 + 228) = 2 * 2 * (33 + 57)
This gives
(132 + 228) = 4 * (33 + 57)
Hence, the expression using factoring is 4 * (33 + 57)
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How many hours did he take to drive one mile?
Answers
A) In one hour Graham drove 33 3/4 miles
B) To drive one mile Grahman will take 4/127 hours
a) change into improper fractions
42 1/3 = 127/3
1 1/3 = 4/3
he takes 4/3 hours to drive 127/3 miles
in one hour he will drive 127/3 × 3/4 = 127/4 = 33 3/4 miles
So in 1 hour he will drive 33 3/4 miles
b) he covers 127/3 miles in 4/3 hours
to cover 1 mile he will take = 4/3 × 3/127 = 4/127 hours
Graham will take 4/127 hours to cover 1 mile.
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What is the radius of a circle that has a diameter of 73.2 ft?
Answers
Answer:
36.6
Step-by-step explanation:
anne and nanny use a metal alloy that is 16% copper to make jewelry how many ounces of an alloy that is 10% copper must be mixed with an alloy that is 20% copper to form 55 ounces of the desired alloy
Answers
By solving a system of equations we conclude that they need to use 22 ounces of the 10% alloy and 33 ounces of the 20% alloy.
How many ounces of each alloy should they use?
First, let's define the variables we will use to solve this problem:
x = ounces of the 10% alloy copper they need to use.y = ounces of the 20% alloy copper they need to use.We know that they want to get 55 ounces, then:
x + y = 55
And the concentration of these 55 ounces must be 16%, then we can write other equation:
0.1*x + 0.2*y = 0.16*55
Then we have a system of equations:
x + y = 55
0.1*x + 0.2*y = 0.16*55
Isolating x on the first equation we get:
x = 55 - y
Now we can replace that in the other equation so we get:
0.1*(55 - y) + 0.2*y = 0.16*55 = 8.8
Now we can solve this for y.
5.5 - 0.1*y + 0.2*y = 8.8
5.5 + 0.1*y = 8.8
y = (8.8 - 5.5)/0.1 = 33
Then the value of x is:
x = 55 - y = 55 - 33 = 22
We conclude that they need to use 22 ounces of the 10% alloy and 33 ounces of the 20% alloy.
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quadratic equation
4x2-4x-1=0
Answers
The solutions to the given quadratic equation 4x² - 4x - 1 = 0 are x = ( 1 - √2 )/2, ( 1 +√2 )/2.
What is the solution(s) to the given quadratic equation?A quadratic equation in its standard form is;
ax² + bx + c = 0
Where x is the unknown
To solve for x, we use the quadratic formula
x = (-b±√(b² - 4ac)) / (2a)
Given the equation in the question;
4x² - 4x - 1 = 0
Compared to the standard form ax² + bx + c = 0
a = 4b = -4c = -1Plug these values into the quadratic formula above.
x = (-b±√(b² - 4ac)) / (2a)
x = (-(-4) ± √((-4)² - ( 4 × 4 × -1 ))) / (2 × 8)
x = ( 4 ± √( 16 - ( -16) ) / (8)
x = ( 4 ± √( 16 + 16) ) / (8)
x = ( 4 ± √( 32) ) / (8)
32 can be written as 4²×2
x = ( 4 ± √( 4²×2 ) ) / (8)
x = ( 4 ± 4√2 ) / (8)
x = ( 1 ± √2 ) / 2
x = ( 1 - √2 )/2, ( 1 +√2 )/2
Therefore, the solutions to the given quadratic equation 4x² - 4x - 1 = 0 are x = ( 1 - √2 )/2, ( 1 +√2 )/2.
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solve by inverse matrix method 2x-y=1, 3y-x-z=8, y-2z=5
please help me my exam is tomorrow
Answers
Then it gets weird but fun! You have to make coefficient matrix for D, Dx, Dy, and Dz
Start with D
2. -1. 0
D=. -1. 3. 1
0. 1. -2
Do you see how we grabbed to coefficient of x in column 1, y in column 2 and z in column 3. Then we need the answer column which is
1
8
5
Now you solve for D by repeating column 1 and 2 in new columns 4 and 5
2. -1. 0. 2. -1
D. -1. 3. -1. -1. 3
0. 1. -2. 0. 1
Now you do too to bottom diagonal multiplication for 3 rows and add your sums and then, bottom to top diagonal multiplication for 3 rows and subtract all of those sums to solve for D. Sounds nuts right?!?
So we start too to bottom, left to right and out first diagonal is 2•3•-2 (see it??) so that is -12
Next diagonal is -1•-1•0 so 0. The third diagonal is 0•-1•1 so 0 again. We we have -12.
Next we go bottom to top to multiply diagonals and subtract all of these from the -12.
So 0•3•0=0. 1•-1•2=-2 and -2•-1•-1=-2
So the original -12 minus O minus -2 minus -2 =-8
the cost of 5 popcorns and 2 drinks is $11.50. The cost of 3 popcorns and 4 drinks is $12.50. find the cost of one popcorn. find the cost of one drink
Answers
Answer:
I tried to solve I got the value of a drink but a popcorn's value comes in negative... Can you recheck it please.......
For the function f(x) = 2 - 3x, find f(-4).
-10
-5
12
14
Answers
Answer: 12
Step-by-step explanation: f(-4)= 2-3(-4) which =2+12=14
In ΔTUV, = 24 inches, = 29 inches and ∠T=130°. Find the area of ΔTUV, Round to the nearest square inch
Answers
The area of ΔTUV, to the nearest square inch is given as 267 square inch
Given data
ΔTUV, = 24 inches, = 29 inches and ∠T=130°
How to solve for are of triangle with two sides and one angle givenlet the Area of the triangle = A
let the two sides be a and b
let the given angle be β
A = a * b * sin β / 2
A = 24 * 29 * sin 130 / 2
A = 696 * 0.7660 / 2
A = 696 * 0.3830 = 266.583
A = 266.583 square inch
A = 267 square inch ( to the nearest square inch )
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[tex]\frac{-332}{-4}[/tex]
Answers
Answer:
83
Step-by-step explanation:
[tex] \frac{ - 332}{ - 4} = 83[/tex]
John works at the mall 20 hours a week and makes $8.50 an hour. He is saving for a car and needs a down payment of $500.
Answers
The will have to work for 3 weeks in order to save money for down payment of car.
What is the unitary method?Unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given in the question is a story of john works at the mall, 20 hours a week and makes $8.50 an hour. He is saving for a car and needs a down payment of $500.
Assume that he has to work 'x' number of weeks for down payment.
For 1 hour, John earns → $8.50
Number of hours he work in the mall per week → 20 hours
Amount of money collected in one week → $8.50 x 20 = $170
Money needed for down payment → $500
In 1 week, John earns → $170
So, he earns $1 in → 1 / 170 weeks
Therefore, he will earn $500 in →
(1 / 170) x 500 = 2.94 = 3 weeks (approx.)
Therefore, he will have to work for 3 weeks in order to save money for down payment of car.
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Scores of an IQ test have a bell-shaped distribution with a mean of
100 and a standard deviation of
19. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between
81 and
119?
(b) What percentage of people has an IQ score less than
43 or greater than
157?
(c) What percentage of people has an IQ score greater than
119?
Question content area bottom
Part 1
(a)
enter your response here
% (Type an integer or a decimal.)
Part 2
(b)
enter your response here
% (Type an integer or a decimal.)
Part 3
(c)
enter your response here
% (Type an integer or a decimal.)
Scores of an IQ test have a bell-shaped distribution with a mean of
100 and a standard deviation of
19. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between
81 and
119?
(b) What percentage of people has an IQ score less than
43 or greater than
157?
(c) What percentage of people has an IQ score greater than
119?
Question content area bottom
Part 1
(a)
enter your response here
% (Type an integer or a decimal.)
Part 2
(b)
enter your response here
% (Type an integer or a decimal.)
Part 3
(c)
enter your response here
% (Type an integer or a decimal.)
Answers
Using the Empirical Rule, it is found that:
a) 68% of the people have an IQ score between 81 and 119.
b) 0.3% of people has an IQ score less than 43 or greater than 157.
c) 16% of people has an IQ score greater than 119.
What does the Empirical Rule state?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.In item a, 81 and 119 are the bounds within 1 standard deviation of the mean, hence 68% of the people have an IQ score between 81 and 119.
In item b, 43 and 157 are the bounds within 3 standard deviations of the mean, hence 0.3% of the distribution is outside this range, that is, 0.3% of people has an IQ score less than 43 or greater than 157.
In item c, considering the symmetry of the normal distribution, the upper 16% has IQ score greater than 119, hence 16% of people has an IQ score greater than 119.
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Nico Joven presently earns $348.40 per week. He claims himself and his mother as allowances. He is single. He is to get a new job classification, which will result in a 15% increase in pay. He also plans to marry. After his marriage, he will claim his wife, himself, and his mother as allowances. How much less will be withheld weekly for federal income tax?
Answers
Answer: The amount less will be with held weekly for federal income tax is $40.65.
Step-by-step explanation:
Given data,
Nico Joven presently earns $348.40 per week.
The amount of money deducted from federal income tax is:
= $348.40/2
= $174.20
He claims himself and his mother as allowances.
He is single. He is to get a new job classification, which will result in a 15% increase in pay.
The increase in pay will be:
= 15% × $348.40
= $52.26
After his marriage, he will claim his wife, himself, and his mother as allowances.
The new salary will be the addition which is $400.66.
The new money with held will be:
= $400.66/3
= $133.55
The amount less withheld will be:
= $174.20 - $133.55
= $40.65
Therefore,
The amount less will be with held weekly for federal income tax is $40.65.
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How can the discriminant be used to determine the number of solutions for a trinomial
in standard form?
Answers
See below for the explanation on how discriminant be used to determine the number of solutions
How can the discriminant be used to determine the number of solutions?Let a trinomial in standard form be represented as
y = ax^2 + bx + c
The discriminant (d) is calculated as
d = b^2 - 4ac
The solutions are dependent on the following conditions
If d = 0, the trinomial has 1 real solutionIf d < 0, the trinomial has imaginary solutionsIf d > 0, the trinomial has 2 different real solutionsRead more about discriminant at
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Geometry homework… the questions after the photo are “9. Find the value of angle RIG” and “10. Find the value of angle ZIM” If you can seriously help me it would mean a lot. Thanks
Answers
Answer: The value of RIG is 59 degrees and the value of ZIM is 31 degrees.
Given: Lines AM,ZG, RI are parallel
angle RIM = 90 degree and lines AM,ZG and RI intersect at point I.
Concept: All angles on the same line make an angle of 180 degree.
Since all angles on a line make an angle sum of 180 degree
So using the above property of straight lines,
Angle RIA + angle RIG + angle GIM = 180 degree
90 + 4z+7 +x+2 = 180
4z+x = 81 ----- (1)
Angle AIZ + angle AIR + angle RIG = 180 degree
3x-56 + 90 + 4z+7=180
3x +4z =139 ----- (2)
3(81-4z) +4z =139
243 -8z =139
z=13
x= 81- 52 = 29
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Answer:
timmy neorons, descaration
Step-by-step explanation:
New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand New Zealand
Help me with geometry
Answers
Answer:
X = 36.5
Z = 19
Angle RIG is 69
angle ZIM is 126.5
Step-by-step explanation:
angle AIZ and ZIP
x + 3x - 56 = 90
4x - 56 = 90
4x = 90 + 56
4x/4 = 146/4
x = 36.5
Plugin the value of x in (3x -56)
3x - 56
(3(36.5) - 56)
(109.5 - 56) = 53.5
Angle AIZ = 53.5
Angle RIG is 4z + 7. Convert the letter x in (x + 2) to Z and solve for z
4z + 7 + z + 2 = 90
5z + 9 = 90
5z = 90 - 9
5z/5 = 81/5
z = 16.2
Z + 2
16.2 + 2 = 18.2
Angle GIM is 18.2 degrees
Plugin the the value of z into 4z + 7 for angle RIG
4z + 7
(4(16.2) + 7) = 71.8
Angle RIG = 71.8 degrees
In some racing events, downhill skiers receive the average of their times for three trials. Would you prefer the average time to be the mean or the median if you had… one very good time and two average times?
Answers
Answer:
Median
Step-by-step explanation:
i think median would be better than mean. This is because with mean, your adding it together then dividing it(by 3 in this case), making the end number higher. tou dont want a higher number in this case.
ex: your numbers are 50, 55,and 90
median = 55 (as it's the middle number)
mean = 65 ( 90+ 55+ 50 / 3)
so median is the lower number, meaning it would be better in this** case.
Give the procedure for separating crude oil into its constituents
Answers
Answer:
Fractional distillation
Step-by-step explanation:
Fractional distillation is the process by which oil refineries separate crude oil into different, more useful hydrocarbon products based on their relative molecular weights in a distillation tower.
Best's Computers claims that of its 4280 items in inventory, 3636 items are IBM PC, while the rest are Apple. What percent of total
inventory is Apple? Round to the nearest tenth of a percent.
select one :
A. 6.6%
B. 15.0%
C. 85.0%
D. 0.8%
Answers
The percent of total inventory is Apple, rounded to the nearest tenth of a percent is 15.0%
How do we determine the percentage of claims in Apple?
Out of the total claims of 4,280 items in inventory, the number of claims in Apple is determined as the total claims minus the number of claims attributable to IBM, such that the percentage of total inventory in Apple is computed as the number Apple's claims divided by total claims
number of claims in Apple=total claims-number of claims in IBM
total claims=4,280
number of claims in IBM=3636
number of claims in Apple=4280-3636
number of claims in Apple=644
% of claims in Apple=number of claims in Apple/total claims
% of claims in Apple=644/4280
% of claims in Apple=15.0%(rounded to 1 decimal place as shown in the options provided)
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Use the frequency distribution shown below to construct and expand frequency distributions
Answers
The expanded frequency distribution is attached
How to get the expand frequency distributionThis will have additional columns which include
midpointrelative frequencycumulative frequencyThe midpoint
The mid point is gotten by adding the lower class limit and the lower class limit and dividing by two
for instance: 10 + 20 / 2 = 10
The relative frequency
In this column they are in percent and the alue is gotten by first summing up all the frequency then finding the percent of each.
for instance: the total sum of the frequency is 365 so
( 17 / 365 ) * ( 100 / 1 ) = 4.66%
The cumulative frequency
The cumulative frequency is solved by sequential addition of the frequency
for instance:
17 next is
17 + 44 = 61
61 + 68 = 129
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Kelsey must pay $200 to rent a booth at the craft fair. The materials for each pendant cost $7.80, and she plans to sell each pendant for $13.50. To make a profit, she must make more money than she spends. Kelsey has already made 10 pendants. Part A Given that Kelsey has already made 10 pendants, how many additional pendants must she make and sell to make a profit?
Answers
To make a profit Kelsey must make and sell more than 49 additional pendants
in this given sum we need to find how many additional pendents kelsey need to make and sell to make profit . The information that are give in the sum
she has to pay $200 for the rent
materials for each pendant is $ 7.8 .
for 10 pendants the total will be 10*7.8 = $78
Therefore she will spend a total of $(78 +200) = $278
So to make a profit the amount of pendants kelsey make multiply it by 13.50 should be greater than the totall amount she spend in making 10 pendants $278 added to the number of pendants she makes multiply by 7.8 that is the total cost
let the no. of pendants she need to make be x
we can write then above explanation as
13.50x >278 + 7.8x
=> 13.5x - 7.8x > 278 +7.8x - 7.8x [subtracting 7.8x on both side]
=> 5.7x > 278
=> x > 278/5.7 = 48.77 = 49 (approx.)
Kelsey needs to make more than 49 pendants rto make a profit.
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Solve 17.04x6.2= how many gallons?
Answers
Answer:
17.04 x 6.2= 105.648
Hope this helps :)
A plane is flying at a height of 35,000 ft. (feet) above sea level. At a particular point, it is directly above a submarine floating 3,500 ft. below sea level and a military drone flying at a height of 3,500 ft. By how much must the military drone ascend so that it is vertically in the middle of the plane and the submarine?
Answers
The military drone must ascend 12250 from its position of 3500ft above sea level feet so that it is vertically in the middle of the plane and the submarine.
To solve this problem we need to understand the concept of sea-level. The sea-level is defined as the average height of all water bodies of the earth. Below sea level is effectively taken as negative length and above sea -level is taken as positive length.
Let us consider the drone will have to ascend x feet to be vertically in between the plane and the submarine.
The submarine is 3500 feet below the sea level.
The plane is 35000 feet above the sea level.
Now we know that the drone is at a height of 3500 feet above the sea level.
Total distance between the drone and the ship=35000-(-3500)=38500ft
Middle point of the two=38500/2 = 19250 feet from the plane
Height above sea level for the drone should be=35000-19250=15750 ft
height of the drone=3500ft
The drone should ascend=15750-3500=12250 feet
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You know the perimeter of a square to be 34 meters. Find the length of one side.
Step 2 of 3: Without substitution, solve the formula for the unknown variable in terms of the known variables.
Answers
The side of one side of the square is determined as: 8.5 meters.
What is a Square?A square is a quadrilateral shape that has four sides that have the same length and four interior angles that are right angles (90 degrees).
What is the Perimeter of a Square?The perimeter of a square is the sum of all the sides of a square which can be calculated using the following formula given as,:
Perimeter = 4(s), where s represents the length of one side of the square.
We are given that:
Perimeter of the square = 34 meters
Therefore:
34 = 4(s)
Divide both sides by 4
34/4 = 4(s)/4
8.5 = s
s = 8.5 m
Thus, the side of one side of the square is determined as: 8.5 meters.
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What’s the answer
|z/4+5|=-7
Answers
Answer:
No solutions
Step-by-step explanation:
To solve systems of inequations with absolute values you need to isolate the items inside of the absolute value brackets then solve for x.
[tex]|\frac{x}{4}+5|=-7\\\frac{x}{4}+5=-7\\\frac{x}{4}=-12 \\x=-48[/tex]
Therefore our answers would be -48 and 48, however there are no answers to this solution as if you try either it does not equal -7. Furthermore graphing both sides of the equations shows there is no intersection.
I need help plsss
What is the equivalent decimal?
Drag the answer into the box to match the fraction.
10/66
A. 0.15
__
B. 0.15
__
C. 0.54
__
D. 0.46
Answers
The decimal form of the fraction 10 / 66 is 0.15.
How to convert from fraction to decimals?Fractions represent the parts of a whole or collection of objects.
In other words fractions are represented as a numerical value, which defines a part of a whole.
Fractions has a numerator and a denominator.
The numerator is at the top while the denominator is below.
A decimal is a number that consists of a whole and a fractional part.
Therefore, let's convert the fractions 10 / 66 to decimal.
Hence,
10 / 66 ÷ 2 / 2 = 5 / 33
Therefore,
5 / 33 = 0.15151515151 = 0.15
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1. A jar contains 50 jelly beans in total. 20 of them are red, 15 are green and the other 15 are blue. If a jelly bean
is selected at random from the jar, what is the probability that it is red or blue?
Answers
70%
Given: 50 total, 20 red, 15 blue
20 + 15 = 35
35 ÷ 50 = .7
.7 • 100 = 70
70% are blue or red.
Change 1,314,000 minutes to years
Answers
Answer:
1,314,000 minutes is equal to 2.5 years.
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