What is the inverse of function f?
f(x)=10/9x+11
Julie is using a 1/2
1
2
-cup measuring cup to fill a gallon jug with water. Julie will need Response area scoops of the 12
1
2
-cup measuring cup to completely fill the jug.
16 cups of water using 1/2 cup of measuring cup will fill a gallon of water.
Measuring of VolumeTo find the number of 1/2 cups that will fill a gallon, we simply need to know how many cups are in one gallon.
[tex]1cup = 0.0625 gallon[/tex]
This implies that
[tex]\frac{1}{2} cup = 0.03125 gallon[/tex]
Let's equate this and find how many cups are in one gallon.
[tex]\frac{1}{2} cup = 0.03125 gallon\\x cup = 1 gallon\\[/tex]
cross multiply both sides and make x the subject of formula
[tex]x = \frac{0.5}{0.03125}\\x = 16 cups[/tex]
The number of 1/2 cups that will fill 1 gallon will be 16 cups.
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The equation of line c is y=–
7x+10. Line d is perpendicular to line c and passes through (7,4). What is the equation of line d?
sam's bowling score is 5 less than twice the score of eva's. The sum of their scores is 235. Write and solve the equation to find the score of each student.
Suppose a sample of 1762 floppy disk is drawn. Of these disks, 70 were defective. Using the data estimate the proportion of disks which are defective. Enter your answer as a fraction or decimal number rounded to three decimal places.
In order to find the proportion of disks that are defective, we can divide the number of defective disks by the total number of disks in the sample:
[tex]p=\frac{70}{1762}=\frac{35}{881}[/tex]Therefore the proportion is 35/881.
PLEASE HELP!!!!!!!!!!!
Answer:
domain -2<x<2
range -2<y<2
not a function
the following data were obtained for days required to reach 230 lb and backfat thickness of a sample of 10 pigs: pig no. days to 230 lb, days backfat thickness, in 1 164 1.0 2 180 1.1 3 158 1.2 4 160 1.4 5 198 1.2 6 172 1.3 7 186 1.1 8 178 1.3 9 178 1.4 10 186 1.0 calculate the covariance between days to 230 lb and backfat thickness.
The covariance value between two variables says, days to 230 lbs and backfat thickness, is 0.48..
The covariance value between any two variables is used to determine whether the variables are changing in the same direction. It relates the two variables if they are from different data sets.
Let X and Y be two data sets with different values. Then the covariance between X and Y is given by
Cov ( X,Y) = ∑ ( X ᵢ– u) ( Yⱼ-v ) /n
Where are Xᵢ's elements in the X data set
Yⱼ→ elements of the Y set
μ → mean of X data set
ν→ mean of Y set
n→ total number of observations
As we have given two sets of data, let days to 230 lbs and backfat thickness be sets X and Y, respectively.
Now, we shall calculate the mean value for X and Y sets.
Mean of X set = (164+158+180 + +160+198+172+186+178+178+186)/10= 176
The mean of Y set =
(1.0+ 1.1+ 1.2+ 1.4+1.2+1.3++1.1+1.3+1.4+1.0)/10 = 1.2
Xᵢ– μ - 12 -18 4 -16 22 -4 10 2 2 10
Yⱼ– ν -.2 - .1 0 .2 0 .1 -.1 .1 .2 -.2
(Xᵢ - μ)(Yⱼ- ν) 2.4 1.8 0 - 3.2. 0 0.4 1 4.4 -2
∑ (Xᵢ - μ ) ( Yⱼ - ν) = 4.8
put all the values of variables in above formula we get,. Cov( X, Y) = 4.8 / 10 = 0.48 ..
So, the Covariance between the days of 230lb and backfat thickness is 0.48 ..
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What percentage of Earth's freshwater is found in lakes, rivers, and streams as surface water? (1 point)
69%
30%
1%
71%
The percentage of Earth's freshwater is found in lakes, rivers, and streams as surface water is 69%. Therefore, option A is the correct answer.
We need to find the percentage of Earth's freshwater is found in lakes, rivers, and streams as surface water.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Over 69 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps.
The percentage of Earth's freshwater is found in lakes, rivers, and streams as surface water is 69%. Therefore, option A is the correct answer.
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If line m is parallel to line n then determine the value of x.
If line m is parallel to line n then determine the value of x= 65°
2x+50° = 180°
2x = 180° - 50°
2x = 130°
x = 130°÷2
x = 65°
What are parallel to line?Parallel lines are lines that do not cross or meet at any point in the plane. They are always parallel and equidistant from each other. Parallel lines are non-intersecting lines. We can also say that parallel lines meet at infinity.
Properties of Parallel Lines
They are always straight equidistant from each other. These are coplanar lines. They never cross, no matter how much you try to stretch them in any direction. If there is a transversal that intersects two parallel nets at two different points, it forms angles at each point.To learn more about parallel to line, refer;
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The value of x is 25. It states that when two parallel lines are cut by a transversal, the resulting alternate interior angles or alternate exterior angles are congruent.
What is parallel?Parallel lines are coplanar straight lines that do not intersect at any point in geometry. Parallel planes are planes that never meet in the same three-dimensional space. Parallel curves are those that do not touch or intersect and maintain a constant minimum distance.
Parallels, paralleling, and paralleled are all word forms. a countable noun A parallel is something that is similar to something else but exists or occurs in a different place or at a different time.
Parallel lines are lines that are always the same distance apart in a plane. Parallel lines never cross. Perpendicular lines are those that intersect at a right angle (90 degrees).
Two different interior angles.
- (2x - 10)°
- (65 - x)°
Because lines m and n are parallel and because of the alternate angles theorem.
We can see that.
2x - 10 = 65 - x
2x + x = 65 + 10
3x = 75
x = 75/3
x = 25
Hence, the value of x is 25.
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A Construction worker needs to pour a rectangular slab 29 feet long 16 feet wide and 6 inches thick how many cubic yards of concrete does the worker need
We have a rectangular slab.
The volume of concrete is equal to the volume of this rectangular prism.
The volume of this prism is equal to the product of its length, width and thickness.
Then, we can write:
[tex]\begin{gathered} V=L\cdot W\cdot t \\ V=29ft\cdot16ft\cdot6in \\ V=29ft\cdot16ft\cdot(6in\cdot\frac{1ft}{12in}) \\ V=29\cdot16\cdot\frac{6}{12}ft^3 \\ V=232ft^3 \end{gathered}[/tex]We convert the thickness from inches to feet by multiplying it by a unit ratio 1 ft / 12 inches, which has a value of 1, as 1 ft = 12 inches, but let us change the units from inches to feet.
When we have all the measures in feet we can have the volume in cubic feet.
Answer: 232 cubic feet.
f(x) = 4x³ + 6x² – 3x − 4
g(x) = 4x - 3
Find (f - g)(x).
Solution of the given algebraic expression (f-g)(x) is equal to 4x³+6x²-7x-1
What are algebraic equations?Algebraic equations are defined as mathematical statements in which two algebraic expressions are set equal to each other. An algebraic expression usually consists of variables, coefficients and constants. Algebraic equations can be of many types, such as monomial algebraic equations, binomial algebraic equations, quadratic algebraic equations, polynomial equations.
Given in the question that the value of f(x) is equal to 4x³+6x²-3x-4
and the value of g(x) is equal to 4x-3.
Subtracting g(x) from f(x) we get,
(f-g)(x)= 4x³+6x²-3x-4-4x+3
4x³+6x²-7x-1
Therefore, solution of the given algebraic expression (f-g)(x) is equal to 4x³+6x²-7x-1.
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Helen needs 6 pints of water to make lemonade. How many gallons does she need?
tv sets: according to the nielsen company, the mean number of tv sets in a u.s. household in 2013 was 2.24 assume the standard deviation is 1.3. a sample of 80 households is drawn.
The probability of a random sample of 80 households having a sample means a number of at least 2.55 televisions per household is 0.48173.
Given: Mean(μ) = 2.24, Standard deviation(σ) = 1.38, Sample size(n) = 1.28 and a random variable for X = 2.55
The formula to calculate the z-score from the mean. The standard deviation is:
z = (X - μ) / ( σ / √(n)) where,
z = z-score,
X = random variable,
μ = mean,
σ = standard deviation, and
n = sample size
Let's solve the given question:
We have,
Mean(μ) = 2.24,
Standard deviation(σ) = 1.38,
Sample size(n) = 80, and
a random variable for X = 2.55
As it is given sample means at least 2.55 so we have to find the Z(x ≥ 2.55).
Therefore, Z(x ≥ 2.55) = (2.55 - μ) / ( σ / √(n))
Substituting all values we get:
Z(x ≥ 2.55) = (2.55 - 2.24) / ( 1.38 / √(80))
Z(x ≥ 2.55) = 0.01 / 0.21819
Z(x ≥ 2.55) = 0.48173
Hence the probability of a random sample of 40 households having a sample means a number of at least 2.55 televisions per household is 0.48173.
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Sophie opened a picture of a tree on her cell phone screen and zoomed in 2.5 times. The new scale of the photograph became 1:168. What would be the scale if Sophie zoomed the image in 4 times?
Halp me with this 1 question Brainliest to correct answer
Answer:
A is correct.
[tex]g = \frac{p}{6} - 15[/tex]
Step-by-step explanation:
[tex]p = 6g + 90[/tex]
[tex]6g = p - 90[/tex]
[tex]g = \frac{p}{6} - 15[/tex]
So A is correct.
the hypotenuse of a right triangle is 10 inches. the length of the two legs are given by two consecutive even integers. find the length of the two legs. the lengths of the two legs are and inches. license points possible: 1
Answer:
6 and 8
Step-by-step explanation:
x = one integer
x+2 = other integer
Pythagorean Theorem:
x^2 + ( x+2)^2 = 10^2
x^2 + x^2 + 4x + 4 = 100
2x^2 + 4x - 96 = 0
x^2 + 2x -48 = 0 Use factoring ( or Quadratic Formula)
(x+8)(x-6) = 0 shows x = 6 the other integer is 8
Use distributive property to multiply the 3 in the expression 3(x−5)=12
Answer:
x = 9
Step-by-step explanation:
3(x - 5) = 12 ← distribute the parenthesis on the left by 3
3x - 15 = 12 ( add 15 to both sides )
3x = 27 ( divide both sides by 3 )
x = 9
Solve for x: -4x - 4 = -4(x + 2)
Oo
O-4
O All real numbers
O No solution
Can anyone help me with this?
Solve 5(x + 2) = 26 - 3x
x = ...
Which symbol correctly compares these fractions? −4/5 −8/9
Answer:
-4/5 > -8/
-4/5 greater than -8/
Answer:
" > "
Step-by-step explanation:
-4/5=4x9 5×9
-4/5 = - 36/ 45
-8/9=8×5 9×5
-8/9 =-40/45
-36/ 45 > -40/45
-4/5 > -8/9
in this case - 4/5 is closer to 0
10) 18p³ - 6p² +3p-1
Answer:
Evaluate
18p
3
−6p
2
+3p−1
Rewrite the expression
18p
3
+3p−6p
2
−1
Factor out 3p from the expression
3p(6p
2
+1)−6p
2
−1
Factor out −1 from the expression
3p(6p
2
+1)−(6p
2
+1)
Solution
(3p−1)(6p
2
+1)
4 root symbol 84 x 10 to the power of 4
The simplified value for 4 √84 x [tex]10^4[/tex] is 800 √21.
What is exponents?The exponent of a number shows how many times the number is multiplied by itself.
For example, 2×2×2×2 can be written as 24, as 2 is multiplied by itself 4 times. Here, 2 is called the "base" and 4 is called the "exponent" or "power." In general, xn means that x is multiplied by itself for n times.
Given:
4 √84 x [tex]10^4[/tex]
Now, first factorize 84 into prime factor
84 = 2 x 2 x 3 x 7
The, we can write it as
4 √84 x [tex]10^4[/tex]
=4 x √(2 x 2 x 3 x 7 x (10²)²)
= 4 x 2 x 10² √( 3 x 7)
= 8 x 10² √21
=800 √21
Hence, the simplified value is 800 √21.
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Question 1 1 pts If g and h are both positive numbers, which statement is true about the x-intercepts of the function f(x) = (x - g)(x - h). the function has no x-intercepts both x-intercepts are negative one x-intercept is negative and one x-intercept is positive both x-intercepts are positive
for the function
f(x) = (x -g)(x - h)
To get the x-intercept, we can equate the function to zero
f(x) = (x -g)(x - h) = 0
so (x - g) = 0
which gives x = g
And (x - h) = 0
which gives x = h
Since we have been told that g and h are positive, then it follows that both intercepts are positive
Which shows the expressions in the order they would appear on a number line from least to greatest? (5 points) a 17 over 9, square root of 6, square root of 15, square root of 30, 3 to the power of 3 b 3 to the power of 3, square root of 30, square root of 15, square root of 6, 17 over 9 c 3 to the power of 3, square root of 6, square root of 15, 17 over 9, square root of 30 d 17 over 9, square root of 30, square root of 15, 3 to the power of 3, square root of 6
An expression which shows the order the numbers would appear on a number line from least to greatest is: A. 17 over 9, square root of 6, square root of 15, square root of 30, 3 to the power of 3.
What is a number line?A number line can be defined as a type of graph with a graduated straight line which is composed of both positive and negative numbers that are placed at equal intervals along its length.
In Mathematics, a number line typically increases in numerical value towards the right from zero (0) and decreases in numerical value towards the left from zero (0).
In order to arrange the given numbers in order from least to greatest, we would convert them into a decimal number as follows:
17/9 = 1.8889√6 = 2.4495√15 = 3.8730√30 = 5.47723³ = 9Read more on number line here: brainly.com/question/28032137
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Simplify: 12a+7x-3a-2x
Answer:
9a+5x
Step-by-step explanation:
9a+5x
all you need to do here is to collect like terms.
so first ignoring the X's, 12a minus 3a is 9a.
then 7x-2x=5x
then you put these together to give you 9a+5x
Answer:
9a+5x
Step-by-step explanation:
you just have to collect like terms and then you will be able to find your answer!
find the confidence interval specified. assume that the population is normally distributed. a sociologist develops a test to measure attitudes about public transportation, and 27 randomly selected subjects are given the test. their mean score is 76.2 and their standard deviation is 21.4. construct the 95% confidence interval for the mean score of all such subjects.
The 95% confidence interval for the mean score of all such subjects. will be ( 67. 7 , 84.7) using mean.
What is mean?
Mathematicians, particularly statisticians, use a variety of means. Every mean serves to condense a certain set of facts, frequently to help grasp the general significance of a particular data set.
sample mean = x' = 76.2
sample S = 21.4
sample size n = 27
Confidence level = a = 0.95
α=1-a=0.05
95% confidence interval for the mean score of all such subjects is
(x'-E , x'+E)
E = [tex]\frac{tc*s}{\sqrt{n}}[/tex]
E = [tex]\frac{2.056*21.4}{\sqrt{27}}[/tex]} = 8.466
95% confidence interval for the mean score of all such subjects is
(x'-E , x'+E)
=(76.2-8.466 , 76.2+8.466)
=(67.734 , 84.666)
= ( 67. 7 , 84.7)
Hence The answer will be ( 67. 7 , 84.7).
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AB=AD and BC=DC What is y equal to? Please show your work of how you got the answer.
The measure of the angle y is 49 degrees if AB=AD and BC=DC; the answer is 49 degrees.
What is quadrilateral?It is defined as a four-sided polygon in geometry having four edges and four corners. The kite is quadrilateral, having two pairs of congruent sides and it has one pair of opposite congruent angles.
The kite is given in the picture.
AB = AD
BC = DC
∠DBC + ∠CBD + ∠C = 180
From the property of kite: ∠DBC = ∠CBD
y + y + 82 = 180
y = 98/2
y = 49 degrees
Thus, the measure of the angle y is 49 degrees if AB=AD and BC=DC; the answer is 49 degrees.
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A group entering a zoo purchased 32 admission tickets for a total of $148. Adult tickets cost $7.50, and tickets for children cost $3.50. How many of each type of ticket were purchased?
There are 23 tickets which are purchased for children and 9 tickets are purchased for adults which cost total $148.
It is given in the question that 32 tickets are purchased by group which cost total $148.
Let the number of children of the group who are entering the zoo be x. Then the number of adults will be 32- x
Now cost of one ticket for adult = $7.50
Total amount spent on adult tickets = 7.50 × (32-x)
Similarly, cost of one ticket for child= $3.50
Total amount spent on children tickets = 3.50 × x =3.5x
Total amount spent by group on tickets = $148
⇒ 7.5 × (32-x) + 3.5x = 148
⇒ 240 - 7.5x + 3.5x = 148
⇒ 7.5x - 3.5x = 240 - 148
⇒ 4x = 92
⇒ x = 23
Children = 23
Adults = 32-x = 32-23 = 9
Hence, 23 tickets are purchased for children and 9 tickets are purchased for adults.
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Please answer this with an explanation:
Answer:
-2
Step-by-step explanation:
PT = TQ
3x + 4 = 5x - 8
-3x -3x
4 = 2x - 8
-8 -8
-4 = 2x
÷2 ÷2
x= -2
sooo
3 times -2 +4 = -2