The suggested answers to the absolute value problem l x - 13 l = 7.
Except for 0, the absolute value is represented by a positive integer. In a variety of mathematical and physical situations, the notions of magnitude, distance, and norm are intimately related to the concept of absolute value.
In order to do this on a budget, find a number N that:
N-10=-(N + 4)
When we isolate N, we obtain:
2N= 10-4= 6
N= 6/2= 3
Following that, N-10= 3-10=-13, and N + 4= 3 + 4= 7.
as well as the fact that I-13I= I7I.
We can now express our equation as follows:
l x-13 l =7
As a result, where the roots (or solutions) of x = -10 and x = 4 are.
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Identify the algebraic rule that would translate a figure 3 units left and 2 units up.
The algebraic rule for translating the figure 3 units left and 2 units up is (x-3, y+2). Option B.
To translate a figure 3 units to the left and 2 units up, we need to adjust the coordinates of the figure accordingly. The algebraic rule that represents this translation can be determined by examining the changes in the x and y coordinates.
When we move a figure to the left, we subtract a certain value from the x coordinates. In this case, we want to move the figure 3 units to the left, so we subtract 3 from the x coordinates.
Similarly, when we move a figure up, we add a certain value to the y coordinates. In this case, we want to move the figure 2 units up, so we add 2 to the y coordinates.
Taking these changes into account, we can conclude that the algebraic rule for translating the figure 3 units left and 2 units up is (x-3, y+2). The x coordinates are shifted by subtracting 3, and the y coordinates are shifted by adding 2. SO Option B is correct.
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Find the equation of the linear function m that has m(-18) = 3 and that is parallel to f(a) = 5/11a +8.
HELP (WORTH 20 POINTS)
Answer:
1 matter
2 atoms
3 molecules
4 matter and energy
5 solid liquid and gas
6 mass
i dont know the rest to be honest
Step-by-step explanation:
Find an equation that has x = -3 as a solution. a. x² - 16 = x-4 b. x² +16=x+4 C. x² +16=x-4 2
For the given solution, . x² - 16 = x-4 satisfies the x = -3
For the given values,
x = -3
a) x² - 16 = x-4
(-3)² - 16 = -3 - 4
7 = 7
So, this equation satisfied the solution.
b) x² +16=x+4
(3)² - 16 = 3 - 4
7 ≠ -1
So, this solution doesn't satisfy the equation
c) x² +16=x-4
(3)² + 16 = -3 - 4
9 + 16 ≠ -7
So, this solution doesn't satisfy the equation
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What is 619,493 in word form
hope this helps :)
Answer: six-hundred and nineteen thousand four-hundred and ninety three
Step-by-step explanation:
Kayla drives 15 miles in 20 minutes. If she drove one hour in total at the same rat how far did she go? Before you try that problem, answer the question below. How many minutes did Kayla drive in total? ] try
how far did she go in minutes???
Answer:
Kayla drove 45miles
Answer: She went 3/4 miles in a minute and 45 miles in an hour
Step-by-step explanation:
15 miles in 20 minutes so 45 miles in 1 hour or 60 minutes
Since 45 miles in 60 minutes, 3/4 miles in a minute
find the 12th term in the sequence: 1/16, -1/8, 1/4
Answer:
Step-by-step explanation:
hello :
the sequence is geometric because : (1/4)/(-1/8) = (-1/8)/(1/16)=-2 = r
the nth term is : An =A1 × r^(n-1)
a common ratio is : r and A1 the first term
in this exercice : r =2 A1 = 1/16
when : n =12 you have the 12rd term A12
A12 = 1/16 × 2^(12-1) = 1/16 × 2^(11)
How much greater is the surface area of the rectangular prism than the surface area of the cube?
A. 36 cm2
B. 33 cm2
C. 18 cm2
D. 45 cm2
Answer: 18 cm2
Step-by-step explanation: the surface area of the cube is 54 cm2 and the rectangular prism is 72 cm2 so 72 - 54 = 18
Write 1 1/6 as an improper fraction
Step-by-step explanation:
Improper fractions have a numerator that is larger than the denominator
1 = 6/6
so 1 1/6 = 7/6
I have to write if it is associative property, closure property, commutative property, additive inverse and so on in the following exercise. 3(y + z) = 3y + 3z
Hello!
We have the expression below:
\(3\left(y+z\right)=3y+3z\)To solve it, we can use the distributive property, look:
If you walk around a circular path TWICE, and the circle has a diameter of 100 m, how far did you walk in TOTAL?
Answer:
628.32 m
Step-by-step explanation:
C = πd
C = π*(100m)
C = 314.16 m
Total Distance = 2*C
2*C = 628.32 m
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Nancy and Billy collect coins. nancy has x coins. Billy has 9 coins fewer than 2 times the number of coins Nancy has. Write and simplify an expression for the total number of coins Nancy and Billy have
What is the mean of this discrete random variable? (That is, what is E(X), the expected value of X?)
A. 20
B. 18.59
C. 19
D. 19.625
Multiply each X by the corresponding probability P(X), then take the sum.
\(E(X) = \displaystyle\sum_X XP(X) = 11\cdot0.07 + 14\cdot0.21 + \cdots + 29\cdot0.08 = \boxed{18.59}\)
B
The SAT is required of most students applying for college admission in the United States. This standardized test has gone through many revisions over the years. In 2005, a new writing section was introduced that includes a direct writing measure in the form of an essay. People argue that female students generally do worse on math tests but better on writing tests. Therefore, the new section may help reduce the usual male lead on the overall average SAT score (The Washington Post, August 30, 2006). Consider the following scores on the writing component of the test of eight male and eight female students.
Males Females
620 660
570 590
540 540
580 560
590 610
580 590
480 610
620 650
570 600
610 620
590 630
570 640
610 590
590 640
570 580
550 560
530 570
560 560
620 600
520 600
560 590
620 590
580 590
610 630
530 560
480 600
590 560
620 560
590 560
580 560
Required:
a. Construct the null and the alternative hypotheses to test if females outscore males on writing tests.
b. Assuming the difference in scores is normally distributed, calculate the value of the test statistic. Do not assume that the population variances are equal.
c. Implement the test at α=0.01 and interpret your results.
Answer:\
a
The null hypothesis is \(H_o : \mu_1 - \mu_2 \le 0\)
The alternative hypothesis is \(H_a : \mu_1 - \mu_2 > 0\)
b
\(t = -0.39\)
c
The conclusion
There is sufficient evidence to conclude that the female outscores the male.
Step-by-step explanation:
From the question we are told that
The sample size for male is \(n_1 = 30\)
The sample size for female is \(n_2 = 30\)
The level of significance is \(\alpha = 0.01\)
The null hypothesis is \(H_o : \mu_1 - \mu_2 \le 0\)
The alternative hypothesis is \(H_a : \mu_1 - \mu_2 > 0\)
Generally the sample mean for male is
\(\= x_1 = \frac{\sum x_i}{n_1}\)
=> \(\= x_1 = \frac{620 + 570 +540 + \cdots + 580 }{30}\)
=> \(\= x_1 = 574.33 \)
Generally the standard deviation of male is
\(s_1 = \sqrt{\frac{\sum (x_1 - \= x)^2}{n_1} }\)
=> \(s_1 = \sqrt{\frac{ (620 - 574.33)^2 + (570 - 574.33)^2 + (540 - 574.33)^2 + \cdots +(580 - 574.33)^2 }{30} }\)
=> \(s_1 =206.24 \)
Generally the sample mean for female is
\(\= x_2 = \frac{\sum x_i}{n_2}\)
=> \(\= x_2 = \frac{660 + 590 +560 + \cdots + 560 }{30}\)
=> \(\= x_2 = 593.33 \)
Generally the standard deviation of male is
\(s_2 = \sqrt{\frac{\sum (x_1 - \= x)^2}{n_2} }\)
=> \(\sigma_1 = \sqrt{\frac{ (660 - 593.33)^2 + (590 - 593.33)^2 + (560 - 593.33 )^2 + \cdots +(560 - 593.33)^2 }{30} }\)
=> \(s_2 =169.31 \)
Generally the degree of freedom for unequal variance is mathematically represented as
\(df = \frac{[\frac{s_1^2}{n_1} +\frac{s_2^2}{n_2} ]^2}{ \frac{[\frac{s_1^2}{n_1}]^2}{n_1 -1} +\frac{[\frac{s_2^2}{n_2}]^2}{n_2 -1} }\)
=> \(df = \frac{[\frac{206.24^2}{30} +\frac{169.31^2}{30} ]^2}{ \frac{\frac{206.24^2}{30}}{30 -1} +\frac{\frac{169.31^2}{30}}{30 -1} }\)
=>\(df = 56\)
Generally the test statistics is mathematically represented as
\(t = \frac{\= x _1- \= x_2 }{\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2}} }\)
=> \(t = \frac{574.33- 593.33 }{\sqrt{\frac{206.24^2}{30} + \frac{169.31^2}{30}} }\)
=> \(t = -0.39\)
From the t distribution table the value of \(P(t < -0.39)\) at a degree of freedom of \(df = 56\) is
\(P(t < -0.39) = 0.3490080\)
Hence the p-value is \(p-value = 0.3490080\)
From the values obtained we see that the p-value is >\(\alpha\)
Hence we fail to reject the null hypothesis.
The conclusion is
There is sufficient evidence to conclude that the female outscores the male
3. Relations
Indicate the number of roots for the
equation that is modelled by the graph.
The relation and equation that is modelled by the graph is y = x - 1.
To determine the relation and equation that is modelled by the graph, we must analyze the characteristics of the graph.The graph is a straight line that passes through the points (0, -1) and (4, 3).
The slope of the line can be determined by using the slope formula:slope = (y2 - y1) / (x2 - x1) = (3 - (-1)) / (4 - 0) = 4/4 = 1
Therefore, the slope of the line is 1. We can use the point-slope form of the equation of a line to determine the equation of the line.y - y1 = m(x - x1)
where y1 = -1, x1 = 0, and m = 1Substituting these values, we get:y - (-1) = 1(x - 0)y + 1 = x Simplifying this equation, we get the relation y = x - 1.
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Please help if you can
Answer:
quadrant three I think.
Answer:
quadrant IV
Step-by-step explanation:
(x,y) the x line has positive numbers while the y has negative numbers
help me pleaseeeeeee
Answer: 12x+18
Step-by-step explanation:
We know that the perimeter of a rectangle is 2(w+h). This time around, we have w = 5x+5 and h = x+4. Plugging those into the equation 2(5x+5+x+4),
you get 2(6x+9). Continue simplifying, you get 12x + 18
What percent of 125 is 375?
A) 33.33%
B) 250%
C) 300%
D) 468.75%
Show work
Answer:
To find the percent of 125 that 375 is, we need to divide 375 by 125 and then multiply by 100.
375 / 125 = 3
So 375 is 3 times 125. Multiplying 3 by 100, we get:
3 * 100 = 300%
So the correct answer is C) 300%.
Succes!
Answer:
C) 300%
Step-by-step explanation:
Percent of 125 means the value of x/125.
Where x is the value 375.
375/125 = 3
3 * 1 =
3 * 100% = 300%
It can be mistaken as 33.33% since 125 is 33.33% of 375.
^^ This question is asking 125 is what percent of 375.
But remember, the question, 'What percent of 125 is 375?', is asking 375 is what percent of 125, not the other way around.
Which process will create a figure that is NOT congruent to the figure shown? Every point is moved 3 units to the right. Every point is moved 3 units right and 3 units up. Every point is moved so that it is 23 as far from the y-axis. Every point is moved to the opposite side of the x-axis but still the same distance from the x-axis.
Answer:
Every point is moved so that it is 2/3 as far from the y-axis
Step-by-step explanation:
Translation and reflection are "rigid" motions. They do not change the size or shape of the figure, so the resulting figure will be congruent with the original.
Dilation by a factor of 2/3 changes the size, so will not result in a congruent figure.
_____
Here the dilation is in the x-direction only. It is not a transformation we usually are interested in.
Answer:
Every point is moved so that it is 2/3 as far from the y-axis
Step-by-step explanation:
What’s the value of x?
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Aunt Penny is making strawberry jam. She has 4 containers of
strawberries. Container A has 4/8 of a pound. Container Bhas 2/8 of a
pound, Container C has 5/8 of a pound and Container D has 6/8 of a
pound. How many pounds of strawberries does Aunt Penny have?
Represent your answer as a mixed number.*
Answer:
2 whole and 1/8
Step-by-step explanation:
Find out the total pounds of strawberries for the 4 containers.
4/8 + 2/8 + 5/8 + 6/8 = 17/8
17/8 = 2 whole and 1/8
Answer:
2 1/8
Step-by-step explanation:
4/8+2/8+5/8+6/8=17/8
17/8 as a mixed number is 2 1/8
So; 1. Find the sum of 64.2 + 3.4 =_____ Find the difference 514 - 1.72=_____
FOR MY BROTHER TWIN'S
" Please answer this today☺️ "
Help I don’t get it at all
Answer:
The answer is B.
Step-by-step explanation:
There is one shaded part out of four parts. This means that the shaded part takes up one-fourth of the overall box, or 1/4. To convert fractions to decimal, you need the denominator to be 100: therefore you multiply 25 to the numerator and denominator: 25/100. This is equal to 0.25 or 25%. The answer is B.
Answer:
B.
Step-by-step explanation:
¼ = 1÷4=0.25
0.25×100=25%
find the average rate of change of g(x)=2xto the power of 2 over the intervsl[-6, 1]
The average rate of change is
\(\dfrac{g(1)-g(-6)}{1 - (-6)} = \dfrac{2(1)^2-2(-6)^2}{1+6} = -\dfrac{70}7 = \boxed{-10}\)
work out the sale has been decreased
20% of 120
The current amount of the sale is 96
How to find the current amount of the sale ?The sale is 120
It was decreased by 20%
20/100 × 120
= 0.2 × 120
= 24
The amount of the current sale is
120-24
= 96
Hence the amount of the current sale which is calculated by subtracting 24 from 120 is 96
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The diameter of a bicycle wheel is 60 centimeters. How far does the wheel travel when it makes 35 revolutions? Give your answer in. meters( Math in focus singapore math course 1 B)
Answer:
The circumference of a circle is given by the formula "C = pi x d" where "d" is the diameter and "pi" is the mathematical constant with an approximate value of 3.14.
In this problem, the diameter of the bicycle wheel is 60 centimeters, so its circumference is:
C = pi x d = 3.14 x 60 = 188.4 centimeters
When the wheel makes one revolution, it travels one circumference distance. Therefore, when the wheel makes 35 revolutions, it will travel:
distance = 35 x circumference = 35 x 188.4 = 6584 centimeters
We can convert centimeters to meters by dividing the distance by 100:
distance = 6584 ÷ 100 = 65.84 meters
Therefore, the wheel travels 65.84 meters when it makes 35 revolutions.
A soccer player has a large cylindrical water cooler that measures 3 feet in diameter and is 4 feet tall. If there are approximately 7.48 gallons of water in a cubic foot, how many gallons of water are in the water cooler when it is completely full? Use π = 3.14 and round to the nearest hundredth. 28.26 gallons 113.04 gallons 211.38 gallons 845.54 gallons
The volume of the cylindrical water cooler is 211.38 gallons. Therefore, option C is the correct answer.
What is the volume?Volume is the measure of the capacity that an object holds.
Formula to find the volume of the object is Volume = Area of a base × Height.
Given that, a soccer player has a large cylindrical water cooler that measures 3 feet in diameter and is 4 feet tall.
Now, radius = 3/2 =1.5 feet
We know that, the formula to find the volume of a cylinder is πr²h.
Here, 3.14×1.5²×4
= 28.26 cubic feet
In gallons = 28.26×7.48
= 211.38 gallons
Therefore, option C is the correct answer.
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The correct option is C, 211.38. Hope this helps :)
Please help questions is down below.
Please answer all!
No bots pls!!!!!! Ill give brain thing
Bob has a total of 60 adventure cards for a game. The table shows the number of cards, c, distributed to p players. Which equation describes the pattern in the table?
p 2 3 4 5
c 30 20 15 12
c = 60 ÷ p
c = 60 – p
c = 60p
c = 60 + p
For a game, Bob has a total of 60 adventure cards. The distribution of cards, c, to players, p, is shown in the table. c = 60 ÷ p
Describe probability. Describe using an example.Probability defines the possibility of occurrence of an event. Probability is the unit of measurement for an event's likelihood. It represents the proportion of positive results to all results. For instance: Receiving the numbers 3 and 5 while rolling the dice, as well as getting both an even and an odd number.
The equation would read: c = 60 / 2, which implies c = 30 if p=2. The equation would read 12 = 60 / p, p = 5, 20 = 60 / 3, etc. If c = 12, the equation would read... 12 = 60 / p, and p = 5, and so on, 20 = 60 / 3, and 15 = 60 / 4.
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Can someone help me simplify and write in power form and show me step by step how to do it for both problem 8 and 9?
Answer:
\(\frac{-1.1x^{25} }{-1.1x^{11} }\) \(\frac{mx^{67} }{mx^{37} }\)
Step-by-step explanation:
Sine (-1.1) is the same as (-1.1) you just put them together and if the numbers are by each other you just add up the exponents. But if the question says this \(\frac{-1.1x^{2} }{-1.1x^{3} }\) than you subtract the exponents.
·\((-1.1)x^{13}X (-1.1)x^{12} = add\\\frac{-1.1x^{2} }{-1.1x^{2} } = subtract\)
Hope this helps. Have a blessed day :)