Choose the equation that represents the line passing through the point (-2,-3) with a slope of -6
Awnsers are
A) y=-6x-15
B) y=-6x-20
C) y=-6x+15
D) y=-6x+20
Answer:A
Step-by-step explanation:
Name three common measurements that are expressed as a ratio of two units.
Density , Speed and Mileage(Fuel Economy) are the three common measurements which can be expressed as a ratio of two units.
What are Fundamental Units?
A fundamental unit is a tool for measuring a base quantity. Any physical quantity that cannot be expressed in terms of another physical quantity is referred to as a basic quantity. They are
Length - meter (m)Time - second (s)Amount of substance - mole (mole)Electric current - ampere (A)Temperature - kelvin (K)Luminous intensity - candela (cd)Mass - kilogram (kg)Three Common Measurements be Density , Speed and Mileage where
Density = [tex]\frac{kg}{m^{3} }[/tex]
Speed = [tex]\frac{m}{s}[/tex]
Mileage = [tex]\frac{km}{L}[/tex]
Hence , the three common measurements which can be expressed as a ratio of two units are Density , Speed and Mileage
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Simplify the following expression: (Multiple Choice)
a + 2c − 5b − c + a − b
1. 2a − 6b + 2c
2. 2a − 6b + c
3. a − 6b + c
4. a − 5b + 2c
Answer:
a + a - 5b - b + 2c - c
2a - 6b + c
the answer is 2
A construction worker needs to put a rectangular window in the side of a building. He knows from measuring that the top and bottom of the window have a width of 9 feet and the sides have a length of 12 feet. He also measured one diagonal to be 15 feet. What is the length of the other diagonal?
Answer: 15 feet
Step-by-step explanation:
The length of other diagonal is 15 feet.
What are properties of diagonal of rectangle?Both diagonals bisect opposite angles of the quadrilateral. Both diagonals form symmetry lines for the quadrilateral. The diagonals divide the quadrilateral into four congruent right triangles. The intersection point of the diagonals is the incenter of the quadrilateral
Given:
width= 9 feet
length= 12 feet
Diagonal length = 15 feet
We know the diagonals of a rectangle are equal and bisect each other.
So,
The length of other diagonal is 15 feet.
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What is 0.0333333333333333 as a fraction?
Determine the width of the garden. Nina must put 60 feet of fencing around her rectangular garden. The length of the garden is three feet longer than twice the width. What is the solution set for 2w + 2(2w + 3) = 60 given the replacement set {6, 7, 8, 9}?
2w+2(2w+3)=60
2w+4w+6=60
6w+6=60
6w=54
w=54/6 =9
the width is 9 feet
Answer:
9 is a solution.
Step-by-step explanation:
The replacement set is the set of values that can be substituted in the equation (for the variables).
Given a replacement set, we need to substitute every value of the set in our equation and see if the equation holds for that value. If it does, then the value is a solution of the equation.
In this problem we have the equation 2w + 2(2w + 3) = 60 and the replacement set is {6,7,8,9}
We are going to start replacing the different values of the set.
w = 6[tex]2w + 2(2w + 3) = 60\\2(6) + 2(2(6)+3) = 60\\12 + 2(12+3) = 60\\12 + 2(15) = 60\\12 + 30 \neq 60[/tex]
Thus, 6 is not a solution.
w = 7[tex]2w + 2(2w + 3) = 60\\2(7) + 2(2(7) +3) = 60\\14 + 2 (14+3) =60\\14 + 2(17)=60\\14+34=60\\48 \neq 60[/tex]
Thus, 7 is not a solution.
w = 8[tex]2w + 2(2w + 3) = 60\\2(8) + 2(2(8)+3) = 60\\16 + 2(16+3)=60\\16 +2 (19) =60\\16 + 38 \neq 54[/tex]
Thus, 8 is not solution.
w = 9[tex]2w + 2(2w + 3) = 60\\2(9) + 2(2(9) + 3) =60\\18 + 2 (18+3) =60\\18 +2(21)=60\\60=60[/tex]
Thus, 9 is a solution.
In the formula that gives the circumference of a circle, which quantity is multiplied by 2 ?
Answer (APEX):
- Radius
GRADE 12 DATA MANAGEMENT!!! HELP PLEASE
The Leafs’ coach stated that “the likelihood of us winning the next game are 2/9, the likelihood of tying the next game are 1/2, and likelihood of us loosing the next game are 2/5”. Can the coach’s predictions be entirely correct? Justify your response
The coach's predictions cannot be entirely correct because the sum of the probabilities given by the coach does not equal 1. Therefore, the coach's predictions are not consistent with the rules of probability.
Explanation:The coach's predictions cannot be entirely correct because the sum of the probabilities of all possible outcomes must equal 1. In this case, the sum of the probabilities given by the coach is 2/9 + 1/2 + 2/5 = 49/90, which is not equal to 1. Therefore, the coach's predictions are not consistent with the rules of probability.
To justify this, we can add up the probabilities of winning, tying, and losing the next game. The correct probabilities should add up to 1 since these are the only possible outcomes.
If we add these probabilities together: 2/9 + 1/2 + 2/5 = 49/90, which is not equal to 1. Therefore, the coach's predictions cannot be entirely correct.
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If a convex polyhedron has 18 edges and 12 vertices, then how many faces does it have?
A family has ninenine children. if this family has exactly threethree boysboysâ, how many different birth and gender orders areâ possible
Billy Goats invested some money in stocks and bonds. The total amount he invested was $\$165,\!000$. If he invested 4.5 times as much in stocks as he did in bonds, what was his total investment in stocks?
An equation is formed when two equal expressions. The total investment that Billy made in stocks is $135,000.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Let the amount that is invested in stocks be represented by x, while the amount that is been invested in bonds is represented by y.
Given that Bily invested 4.5 times as much in stocks as he did in bonds. Therefore, the equation to represent the given situation can be written as,
x = 4.5y
Also, given that the total amount that Billy invested is $165,000. Therefore, the total invested amount can be written as,
$165,000 = x + y
Substitute the value of x in the equation,
$165,000 = 4.5y + y
$165,000 = 5.5y
y = $165,000 / 5.5
y = $30,000
Now substitute the value of y in the first equation to know Billy's investment in stocks.
x = 4.5y
x = 4.5($30,000)
x = $135,000
Hence, the total investment that Billy made in stocks is $135,000.
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The mean diastolic blood pressure for a random sample of 70 people was 94 millimeters of mercury. if the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury, find a 90% confidence interval for the true mean diastolic blood pressure of all people.
To solve this problem, we make use of the formula for Confidence Interval:
Confidence Interval = X ± z * σ / sqrt (n)
where X is the mean value, z is the z score which is taken from the standard tables, σ is the standard deviation, and n is the number of samples
z = 1.645 (at 90% Confidence Level)
Substituting the values into the equation:
Confidence Interval = 94 ± 1.645 * 12 / sqrt (70)
Confidence Interval = 94 ± 2.36
Confidence Interval = 91.64, 96.36
Therefore at 90% confidence level, the blood pressure reading ranges from 91.64 mmHg to 96.36 mmHg.
Find the perimeter and area of a square with side lengths of 16
perimeter = 4S = 16*4 = 64 units
area = S^2 = 16^2 = 256 square units
Answer:
The perimeter of a square with side lengths of 16 units is 64 units.
The area of a square with side lengths of 16 units is [tex]256 unit^2[/tex].
Step-by-step explanation:
Length of the square = a = 16 units
Perimeter of the square = P = [tex\]4\times a[/tex]
[tex]P=4\times 16 units = 64 units[/tex]
Area of the square = A = [tex]a^2[/tex]
[tex]A=a^2=(16 unit)^2=256 unit^2[/tex]
The perimeter of a square with side lengths of 16 units is 64 units.
The area of a square with side lengths of 16 units is [tex]256 unit^2[/tex].
what is the quotient? x-3 divided into 4x2+3x+2
The quotient of x-3 divided into 4x^2+3x+2 is 4x+9.
Explanation:To find the quotient of x-3 divided into 4x^2+3x+2, we need to perform polynomial long division.
Divide the first term of the numerator (4x^2) by the first term of the denominator (x) to get 4x. Write this as the first term of the quotient.Multiply the entire denominator (x-3) by the quotient term (4x) and subtract it from the numerator (4x^2+3x+2).Bring down the next term from the numerator (-3x).Repeat steps 1 and 2 with the new numerator (-3x) and the denominator (x-3).Continue this process until there are no more terms to bring down and divide.After performing polynomial long division, the quotient is 4x+9.
Final answer:
To find the quotient of x-3 divided into 4x^2+3x+2, you can use long division. The quotient is 4+15 with a remainder of 47.
Explanation:
To find the quotient of x-3 divided into 4x2+3x+2, we can use long division.
First, divide the 4x2 term by the x term, which gives us 4x.Multiply 4x by x-3 to get 4x2-12x.Subtract 4x2-12x from 4x2+3x+2 to get 15x+2.Now, divide 15x by x to get 15.Multiply 15 by x-3 to get 15x-45.Subtract 15x-45 from 15x+2 to get 47.Since there are no more terms to divide, the quotient is 4+15 and the remainder is 47.Therefore, the quotient of x-3 divided into 4x2+3x+2 is 4+15 with a remainder of 47.
can someone explain how to do this plzz
Solve (2/3)-(1/x)=5/6
The length of a rectangle is three inches more than the width. the area of the rectangle is 460 inches. if the width is x, what is the length in terms of x?
The length and width of the given rectangle are 23 and 20 inches respectively.
Suppose the width of the given rectangle=x inch
So, the length of the given rectangle = x+3 inch
What is the area of a rectangle?The area of a rectangle with length l and width b is lb.
So, the area of the given rectangle = x(x+3)
Given that area of the rectangle = 460 squared inches
So, x(x+3)=460
[tex]x^{2} +3x=460[/tex]
[tex]x^{2} +x-460=0[/tex]
[tex]x^{2} +23x-20x-460=0[/tex]
[tex]x(x+23)-20(x+23) =0[/tex]
[tex](x+23) (x-20)=0[/tex]
[tex]x=-23[/tex]...Not possible
[tex]x=20[/tex]
The width of the rectangle =20 inches
So, the length of the rectangle =20+3 = 23 inches
Therefore, the length and width of the given rectangle are 23 and 20 inches respectively.
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A six-sided die is rolled three times. what is the probability that all three rolls will be 6?
you have a 1/6 probability of rolling a 6
so for 3 6's it would be
1/6 x 1/6 x 1/6 = 1/216
Find (r-s) (t-s) + (s-r) (s-t) for all numbers r, s, and t. (a) 0 (b) 2 (c) 2rt (d) 2(s-r) (t-s) (e) 2(r-s) (t-s)
Answer:
d
Step-by-step explanation:
Negative numbers are less than positive numbers. Does this mean that the absolute value of a negative number must be less than the absolute value of a positive number? Explain.
Tan (25pi/2) = ___
A). 1
B). 0
C). -1
D). Undefined
Aida is attending a trekking camp. She walks from her tent to a hilltop in 2 hours. She has a picnic with her friends on the hilltop for 6 hours. Aida walks back to her tent in 1 hour. Which graph best represents the distance, y, in miles, traveled by Aida for a certain amount of time, x, in hours? A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0.
The correct answer among the given choices is the first one:
“A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0.”
The given ordered pairs is in the format of (t, d) where t is time and distance is d. Time will always be on the x-axis since it is always an independent variable.
The first ordered pair should be (2, 4) since it took her 2 hours to trek to the hilltop. From the given choices, only the 1st and 3rd choice has this first ordered pairs so we are down to two choices.
Now the second ordered pair should be (8, 4) since she spent 6 hours at the top but no change in distance. And only the 1st choice has this value therefore it is the answer.
(06.02 MC)
A group of students plotted the number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week
Which statement best describes the relationship between the number of hours spent working at the cake shop and the number of cakes delivered?
Greater hours worked, more cakes delivered
Fewer hours worked, more cakes delivered
Greater hours worked, fewer cakes delivered
There is no relationship between hours spent working and number of cakes delivered.
A fire hydrant that is 1.5 feet high casts a shadow that is 2.5 feet long. At the same time of day, a lamppost casts a shadow 15 feet long. What is the height of the lamppost?
Answer:
9 feet
Step-by-step explanation:
A bag contains 10 marbles: 4 are green, 2 are red, and 4 are blue. Christine chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are blue? Write your answer as a fraction in simplest form.
Answer:
The probability that both marbles she chooses are blue is [tex]\frac{2}{15}[/tex]
Step-by-step explanation:
Given : A bag contains 10 marbles: 4 are green, 2 are red, and 4 are blue. Christine chooses a marble at random, and without putting it back, chooses another one at random.
To find : What is the probability that both marbles she chooses are blue?
Solution :
Total number of marbles = 10
Green marbles = 4
Red marbles = 2
Blue marbles = 4
Probability is favorable outcome upon total number of outcomes.
Probability of getting first marble is blue
[tex]\text{P(first blue marble)}=\frac{4}{10}=\frac{2}{5}[/tex].
Without replacement,
i.e. Blue marble left = 3
Total marble left = 9
Probability of getting second marble is blue
[tex]\text{P(second blue marble)}=\frac{3}{9}=\frac{1}{3}[/tex]
The probability that both marbles she chooses are blue is
[tex]\text{P(both blue marble)}=\frac{2}{5}\times\frac{1}{3}[/tex]
[tex]\text{P(both blue marble)}=\frac{2}{15}[/tex]
Therefore, The probability that both marbles she chooses are blue is [tex]\frac{2}{15}[/tex]
Simplify the expression please
PLEASE HELP!!!! IMAGE ATTACHED find the value of x
think of a number. add two. multiply by three. add your original number. multiply by 2. add 2. subtract your original number. divide by 7. add three. subtract your original number. add five. Why is the answer always ten?
whitch of the following is (are) the solution(s) to 11x+3=6
The probability of a randomly selected car crashing during a year in a certain country is 0.04770.0477. if a family has threethree cars, find the probability that at least one of them has a car crash during a year. is there any reason why the probability might be wrong?