The R= {y | y is an integer and -5 ≤ y ≤ -4} is null set because there is no integers between -5 and -4.
The set is
R= {y | y is an integer and -5 ≤ y ≤ -4}
An integer is a combination of number zero, all the positive numbers and negative numbers without any fraction.
Any set that does not contains any numbers or elements is called null set, which is also called empty set or void set. Null set can be denoted as {} or ∅.
The set is R= {y | y is an integer and -5 ≤ y ≤ -4}
There is no integers between -5 and -4, therefore it is a null set
Hence, The R= {y | y is an integer and -5 ≤ y ≤ -4} is null set because there is no integers between -5 and -4.
The complete question is :
Write the set in roaster form R= {y | y is an integer and -5 ≤ y ≤ -4}
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Which of the following equations is not exponential?
Y=1^x
Y=(1/2)^x
Y=-2^x
The first equation given in the question as, y = 1^x is not exponential.
What do you mean by exponential?
A mathematical function with the form f (x) = a^x is an exponential function. "x" is a variable, while "a" is a constant that serves as the function's base and must be bigger than 0. The transcendental no., or roughly 2.71828, is the most often used exponential function on regular basis.
The equation, y = 1^x is not an exponential because for any integer value of x, y always equals to zero. Which makes it simple equation and not an exponential equation.
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For triangle ABC, ∡c=90°, b=5, and ∡A=72°. Draw and label a diagram for this triangle, then find the measures of the remaining angles and sides. Explain how you found each measure.
The angle A is given 72 degree and angle C is given 90 degree.
The side b is 5.
Then the right triangle is given
Use the property , the sum of the angles of the property is the 180 degree.
[tex]90^{\circ}+72^{\circ}+\angle B=180^{\circ}[/tex][tex]\angle B=180^{\circ}-90^{\circ}-72^{\circ}[/tex][tex]\angle B=18^{\circ}[/tex]Then the angle B is 18 degree.
Then to determine side a , use the tan trigonometric function.
[tex]\tan 72^{\circ}=\frac{a}{5}[/tex][tex]a=5\times tan72^{\circ}=15.38[/tex]The side a is 15.38.
Now to determine the side c, use the trigonometric function sin .
[tex]\sin 72^{\circ}=\frac{a}{c}=\frac{15.38}{c}[/tex][tex]c=\frac{15.38}{\sin 72^{\circ}}=16.18[/tex]The side c is 16.18.
18 of the animals in the shelter arecats. If there are 40 animals in theshelter, what percent of the animalsare cats?
There are 40 animals in the shelter, 18 of that animals are cats.
We need to find the percent of the animals that are cats.
Then, 40 animals represent 100% in the shelter.
We can use the rule of three to find the cat's percent:
Therefore:
40 animals -------------- 100%
18 cats ------------------------ x
x = (18*100)/40
x =45
So, 45 % of the animals are cats.
Carson Company has an inventory turnover of 13.00, and its inventory amounts to $5,000,000. What is the amount of cost of goods sold?
$6,50,000 is the cost of the goods sold.
What is Inventory turnover?By dividing a company's cost of sales, or cost of goods sold, by its inventory turnover, one can determine how well it uses its inventory (COGS).
The number of times inventory is sold or used over a given time frame, like a year, is referred to as the inventory turnover in accounting. It is calculated to determine whether a company has an excessive amount of inventory in relation to its level of sales.
Inventory turnover is the count of times a company's stock is sold during the course of a month, a quarter, or (most frequently) a year of business.
We should apply the following formula to calculate the cost of goods sold:
Cost of goods sold / inventory equals inventory turnover.
Rearranging the equation and replacing the unknown values results in:
Inventory plus inventory turnover equals cost of goods sold.
Price of items sold = $5,000,000 divided by 13
$6,50,000 is the cost of the goods sold.
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What is the image point of (-1, -3) after the transformation D₂ o T 4.-5?
The image of the point after the transformation is (2, -7)
How to image of the point after the transformation?The given parameters are:
Point = (-1, 3)
Transformation rule:
D₂ o T 4.-5
The above means that
Dilation by a scale factor of 2Followed by a translation of (4, -5)When these transformations are combined, we have
(x, y) = (2x + 4, 2x - 5)
So, the mathematical representation of this transformation is
(x, y) = (2x + 4, 2x - 5)
Substitute the equation Point = (-1, -3) in the equation (x, y) = (2x + 4, 2x - 5)
So, we have the following equation
(x, y) = (2(-1) + 4, 2(-1) - 5)
Evaluate the product
(x, y) = (2, -7)
Hence, the image is (x, y) = (2, -7)
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This is my homework by the way.You can represent the measures of an angle and its complement as x° and (90 -x)° Similarly, you can represent the measures of an angle and its supplement as and (180 -- x)°. Use these expressions to find the measures of the angles described.The measure of an angle is three times the measure of it's supplement.The measure of the supplement of an angle is three times the measure of it's complement.The measure of an angle increased by 20° is equal to the measure of it's complement.
The sum of complemenatry angles = 90
The sum of supplementary angles = 180
online you found the shoes you want to buy for 30% off the regular price is $150. this is the first time you have ordered from this site they're offering an additional 20% off for the first time customers was your final price list shoes after the discounts?
If we apply the first discount the shoes would have a price of:
[tex]150-150\cdot0.3=105[/tex]To this pice we make the 20% discount, then:
[tex]105-105\cdot0.2=84[/tex]Therefore, after the discounts the price would be $84
Solve the equation for x. −0.28x − 15.3 = 1.92 x = 61.5 x = −61.5 x = 47.8 x = −47.8
The value of x in the linear equation −0.28x − 15.3 = 1.92 is -61.5 option (B) -61.5 is correct.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
The linear equation one variable is:
−0.28x − 15.3 = 1.92
-0.28x = 1.92 + 15.3
-0.28x = 17.22
x = -17.22/0.28
x = -61.5
Thus, the value of x in the linear equation −0.28x − 15.3 = 1.92 is -61.5 option (B) -61.5 is correct.
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Answer:
its B -61.5
Step-by-step explanation:
i attched pictures to show you
Suppose that Randy is an analyst for the bicyling industry and wants to estimate the asking price of used entry-level road bikes
advertised online in the southeastern part of the United States. He obtains a random sample of n = 14 online advertisements of
entry-level road bikes. He determines that the mean price for these 14 bikes is x = $714.19 and that the sample standard
deviation is s = $184.56. He uses this information to construct a 99% confidence interval for µ, the mean price of a used road
bike.
What is the lower limit of this confidence interval? Please give your answer to the nearest cent.
What is the upper limit of this confidence interval? Please give your answer to the nearest cent.
1. The lower limit of this confidence interval is $587.13.
2. The upper limit of this confidence interval is $841.25.
How are the lower and upper limits determined?The lower limit describes the lowest price that entry-level road bikes will cost.
The upper limit refers to the highest price that entry-level road bikes can command.
Using the lower and upper limits, Randy can confidently estimate the range of the asking price of the used entry-level road bikes.
N = 14
Mean price, µ = $714.19
Sample deviation = $184.56
Confidence interval = 99%
The z-score of 99% confidence interval = 2.576
The margin of error = z-score x (standard deviation/√n)
= 2.576 x ($184.56/√14)
= $127.06
Lower Limit = µ - margin of error
= $714.19 - $127.06
= $587.13
Upper Limit = µ + margin of error
= $714.19 + $127.06
= $841.25
Thus, Randy can estimate that the price of used entry-level road bikes is $714.19 ±$127.06 at a 99% confidence level.
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Find the LCM of 18, 54, and 63.
Answer:
378
Step-by-step explanation:
Start with prime factoriazation
18 = 2 * 3 * 3
54 = 2 * 3 * 3* 3
63 = 3 * 3 * 7
2 * 3 * 3 * 3 * 7 = 378
Line a is parallel to line b. Line a contains the points (3, 4) and (6, 7). Line b contains the points (2,8) and (6. y). What is the value of y?A7B11С12D24
parallel lines have the same slopes. Therefore,
[tex]m_1=m_2_{}_{}_{}[/tex][tex]m_1=\frac{y_2-y_1}{x_2-x_1}=\frac{7-4}{6-3}=\frac{3}{3}=1[/tex][tex]m_2=1[/tex]Y can be found below
[tex]\begin{gathered} 1=\frac{y-8}{6-2} \\ 1=\frac{y-8}{4} \\ 4=y-8 \\ y=4+8 \\ y=12 \end{gathered}[/tex]Math word problem covert into systems of equations
Problem #1
budget rent a car rented a basic car at a daily rate of $45.95 plus 40 cents per mile. Another company rents a basic car for $46.95 plus 20 cents per mile. For what mileage is the cost the same.
Define the variables
Let
x -----> number of miles
y -----> the total cost
we have
budget rent a car
y=40x+45.95 ------> equation 1
Another company
y=20x+46.95 -------> equation 2
Solve the system of equations
equate equation 1 and equation 2
40x+45.95=20x+46.95
solve for x
40x-20x=46.95-45.95
20x=1
x=0.05 miles
therefore
the cost is the same for 0.05 milesWrite the equation x2 + y2 + 6x + 8y + 24 = 0 in vertex form.
ANSWER
[tex](x+3)^2+(y+4)^2=1[/tex]EXPLANATION
We want to write the equation of the circle in vertex form:
[tex]x^2+y^2+6x+8y+24=0[/tex]The first step is to group the x terms and y terms together and take the constant to the right-hand side of the equality sign:
[tex]x^2+6x+y^2+8y=-24[/tex]Now, complete the square for the x terms:
[tex]\begin{gathered} x^2+6x+(\frac{6}{2})^2+y^2+8y=-24+(\frac{6}{2})^2 \\ x^2+6x+9+y^2+8y=-24+9 \\ (x+3)^2+y^2+8y=-15 \end{gathered}[/tex]Repeat the process for the y terms:
[tex]\begin{gathered} (x+3)^2+y^2+8y+(\frac{8}{2})^2=-15+(\frac{8}{2})^2 \\ (x+3)^2+y^2+8y+16=-15+16 \\ (x+3)^2+(y+4)^2=1 \end{gathered}[/tex]That is the equation of the circle in vertex form.
Find the sector area of the circle. Use 3.14 for the value of pi
Given:
Radius of the cirle = 11 ft
Angle = 150 degrees
π = 3.14
Let's find the area of the sector of the cicle.
To find the area of the sector, apply the formula:
[tex]A=\frac{\theta}{360}\times\pi r^2\text{ }[/tex]Where:
π = 3.13
θ = 150 degrees
r = 11
Thus, we have:
[tex]\begin{gathered} A=\frac{150}{360}\times3.14\times11^2 \\ \\ A=\frac{150}{360}\times3.14\times121 \end{gathered}[/tex]Solving further:
[tex]\begin{gathered} A=0.41667\times3.14\times121 \\ \\ A=158.3ft^2 \end{gathered}[/tex]Therefore, the sector area of the circle is 158.3 square feet.
ANSWER:
158.3 square feet.
6
Mrs. Drake buys 72 peanut butter cups and
64 boxes of Nerds. She wants to make goody
bags for her students for Halloween. Mrs.
Drake wants to make sure that every bag has
the same number of each type of candy.
What is the greatest number of goody bags
she can make?
what is the distance between point A (-1, 3) and point B(-8, 3. A 2 units B 5 units C 7 units D 9 units.
Each day. you run at a rate of traveled, in miles, is given by the amount of time you run to If you ran for 22 traveed miles enter your
we have the following:
[tex]\begin{gathered} v=\frac{d}{t} \\ d=v\cdot t \end{gathered}[/tex]where d is distance, t is time and v is velocity, replacing:
[tex]\begin{gathered} d=22\cdot06 \\ d=13.2 \end{gathered}[/tex]therefore, the distance is 13.2 miles
If g(x)=5 x, h(x)= √ x, find the composition.
(g ° h)(0)
(g ° h)(0) = ____
The value of the composite function (g ° h)(0) is equivalent to zero.
Composite functionsA function that is composed of further functions, each of which serves as the input to the next.
Given the function below;
g(x) = 5x
h(x) = √x
Determine the composite function (g o h)(x)
(g o h)(x) = g(h(x))
(g o h)(x) = g(√x)
g(√x) = 5√x
Substitute the value of x to have:
(g o h)(0) = 5√0
(g o h)(0) = 0
This gives the required value
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Write each rational number as a decimal. If there’s no phone number, make sure to include a zero in the beginning. So if your answer is 0.7 make sure to put the zero in the beginning.
Calculate the given division, as shown below
Therefore, 33/40 is equal to 0.825. The answer is 0.825b. Alejandro needs 13 yards of wire. How much will he spend on wire?.
Answer:
This is impossible.
Step-by-step explanation:
You didn't give us how much 1 yard is.
Answer: How much is one yard?
Step-by-step explanation:
5. Stabiliţi dacă numerele următoare sunt prime: 37, 93, 123, 377, 602, 769, 1 243, 1999.
Answer:
Numere prime:37,377,769,1243,1999
Sunt numere prime deoare au ca divizori doar 1 si ei insusi
Calculate the standard score of the given X value, X=83, where μ=88.1 and σ=87. Round your answer to two decimal places.
The standard score for the given X value is -0.06
Standard Score
Standard score or Z - Score is inversely varies with the standard deviation and directly varies with the difference of the raw score and the mean score.
The formula to calculate standard score is
z - score = (X - μ)/σ
Where
Z = standard score
x = observed value
μ = mean of the sample
σ = standard deviation of the sample
Given,
Here we have the value of X = 83, μ=88.1 and σ=87.
Now, we need to find the standard score for this values and we have also round off the result to two decimal places.
Apply the given values on the z-score formula, then we get,
z-score = (83 - 88.1)/87
When we simplify the numerator, then we get,
z - score = -5.1/87
After the division of these numbers we get the value of z-score as,
z - score = -0.0586
When we round off the result into two decimal place then we get the value of standard score as -0.06.
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What is the solution to the system?
2x+3y=1
-2x-y=9
A (-7,5)
B (5,-3)
C (5,-7)
D (-3,5)
Answer:
A
Step-by-step explanation:
Adding the equations,
[tex]2y=10 \implies y=5 \\ \\ \therefore 2x+3(5)=1 \implies x=-7[/tex]
Graph the line that is parallel to the line
2x-3y = -9 and passes through the
point (-3, 5).
y = 2/3x + 7 is slope-intercept form of the equation .
What exactly does slope intercept mean?
A method of expressing a line's equation that makes it simple to identify the slope and y-intercept is known as the slope-intercept form.The point where the line is drawn the y-axis is known as the y-intercept, and the slope refers to how steep the line is.the equation of the parallel line in slope intercept form y=mx+b so that we can clearly see the slope and y intercept
2x-3y = -9
3y = 2x + 9
y = 2/3x + 9/3
y = 2/3x + 3
compare equation y = mx + c
slope = 2/3
to find c put x = -3 and y = 5
y = mx + c
5 = 2/3 * (-3) + c
5 = -6/3 + c
c = 5 + 2 = 7
put the final equation together
y = 2/3x + 7
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Maggie walks at a constant speed.
Maggie plots points on the coordinate plane below to show amounts of time it takes her to walk
certain distances.
Distance
(km).
The ordered pair which can be plotted according to the given data in graph will be (6,21).
Plotting of point on graph:Plotting an ordered pair on graph of speed and time represents the motion of a particle accelerating from a speed at time 0 , u , to a speed v at time t .
According to given graph we have already plotted points as follows
(2, 7), (4, 15), (5,17)
Now by analysis of the given graph pattern we can conclude that the ordered pair which can be added to the given graph if (6, 21).
Note : - The Question is completed as below and the coordinate plane is attached too.
Maggie walks at a constant speed. Maggie plots points on the coordinate plane below to show amounts of time it takes her to walk certain distances.
Which of the following ordered pairs could Maggie add to the graph?
A. (1,3)
B. (3,10)
C. (6,21)
D. (3,1)
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Identify the like terms in the expression.12n - 6+p+6n
The like terms in the expression are 12n and 6n
Explanations:Like terms are terms that have the same coefficients and in the same order of degrees.
In the expression:
12n - 6 + p + 6n
The like terms are 12n and 6n
a local boys club sold 156 bags of mulch and made a total of $455 it's sold two types of mulch hard word for $3.25 a bag in Pine Box for $2.75 a bag how many bags of each kind did it sell
Let's define first the variables.
let H be the number of bags of the type that cost 3.25 and P the number of bags of the type that cost 2.75.
since they sold a total of 156 bags we have that H+P=156
and from the other condition we obtain 3.25H+2.75P=455
now we can solve the system of equations.
from the first equation H=156-P
substituing the previous equality in the second one we obtain:
[tex]3.25(156-P)+2.75P=455[/tex][tex]507-3.25P+2.75P=455[/tex][tex](2.75-3.25)P=-53[/tex][tex]0.5P=53[/tex][tex]P=106[/tex]now that we have P, we can replace it in the first equation obtaining that H=50
then the answer will be that they sold 50 bags of $3.25 and 106 bags of $2.75
Simplify (2.6 x 10-6) + (3.2 x 10-2) (1.94 x 10-4) write answer in scientific notation
Answer:
[tex]8.808 \times 10^{-6}[/tex]
Step-by-step explanation:
Given expression:
[tex](2.6 \times 10^{-6})+(3.2 \times 10^{-2})(1.94 \times 10^{-4})[/tex]
The grouping of numbers by parentheses in a different way does not affect their product. Also, changing the order or position of the product of two numbers does not change the end result.
[tex]\implies (2.6 \times 10^{-6})+(3.2 \times 1.94 \times 10^{-2} \times 10^{-4})[/tex]
Multiply the numbers 3.2 and 1.94:
[tex]\implies (2.6 \times 10^{-6})+(6.208\times 10^{-2} \times 10^{-4})[/tex]
[tex]\textsf{Apply the exponent rule} \quad a^b \cdot a^c=a^{b+c}:[/tex]
[tex]\implies (2.6 \times 10^{-6})+(6.208\times 10^{-2-4})[/tex]
[tex]\implies (2.6 \times 10^{-6})+(6.208\times 10^{-6})[/tex]
Factor out the common term 10⁻⁶:
[tex]\implies 10^{-6}(2.6+6.208)[/tex]
Add the numbers 2.6 and 6.208:
[tex]\implies 10^{-6}(8.808)[/tex]
[tex]\implies 8.808 \times 10^{-6}[/tex]
Scientific notation is written in the form a × 10ⁿ , where 1 ≤ a < 10 and n is any positive or negative whole number. Therefore, the final answer is in scientific notation.
Simplify the expression. Show your work. Please help me!!!
[tex] \sqrt{ \frac{4 {x}^{2} }{3y} } \\ = \frac{ \sqrt{4 {x}^{2} } }{ \sqrt{3y} } \\ = \frac{ \sqrt{4 } \times \sqrt{ {x}^{2} } }{ \sqrt{3y} } \\ = \frac{2x }{ \sqrt{3y} } [/tex]
ATTACHED IS THE SOLUTION
Answer:
The image is the answer
Step-by-step explanation:
Use f(x) =11. f(-8)35x + 11, g(x)=x2-7x, and h(x) = 15 - 9x to evaluate each function.12. g(-2)13.14. 9(5)+g(9)15. 1-216. If f(x) = -7, find x.17. If h(x) = 48, find x.18. Find /(-8c + 2)19. Find g(x-8)
To find f(-8), we just need to replace x by -8 on the function f(x) as:
[tex]\begin{gathered} f(x)=\frac{-3}{2}x+11 \\ f(-8)=\frac{-3}{2}(-8)+11 \\ f(-8)=12+11 \\ f(-8)=23 \end{gathered}[/tex]At the same way g(-2) is equal to:
[tex]\begin{gathered} g(x)=x^2-7x \\ g(-2)=(-2)^2-7\cdot(-2) \\ g(-2)=4+14 \\ g(-2)=16 \end{gathered}[/tex]Finally, h(2/3) is equal to:
[tex]\begin{gathered} h(x)=\left|15-9x\right| \\ h(\frac{2}{3})=\left|15-9\cdot\frac{2}{3}\right| \\ h(\frac{2}{3})=\left|15-6\right| \\ h(\frac{2}{3})=\left|9\right| \\ h(\frac{2}{3})=9 \end{gathered}[/tex]Answers: f(-8) = 23
g(-2) = 16
h(2/3) = 9