An equation representing this situation where Tommy earned $225 washing cars per appointment charge of $30 and tips of $45 while paying $10 for water per appointment is D. (30 - 10)y + 45 = 225.
What is an equation?An equation is a mathematical statement that states that two or more mathematical expressions are equivalent or equal.
Equations depict the equality of mathematical expressions using the equation symbol (=).
The total amount earned = $225
Variable charge per appointment = $30
Tips earned = $45
Variable cost per appointment for water = $10
Contribution margin per unit = $20 ($30 - $10)
Let each appointment = y
Total earnings: 225 = (30 - 10y) + 45
Thus, the equation that represents the situation of Tommy's net earnings from washing cars is Option D.
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An experiment was conducted by a group of students. There were 8 times recorded. The distance traveled was 30 meters. The times were 7.48, 7.45, 7.90, 7.37, 7.25, 7.40, 7.55, and 7.60. What was the average time
The average time is 7.5. The average is calculated by dividing the total number of values in a given set by the sum of all the values in that set.
How to calculate average ?An average is a single number chosen to represent a group of numbers; it is often the sum of the numbers divided by the number of numbers in the group. Average The arithmetic mean is calculated by adding a set of numbers, dividing by their count, and then taking the result.
If every number in a list is the same number, then that number also serves as the average for the list. Every one of the diverse varieties of average shares this characteristic.
An average of the values in a sample of data can be used to define a mean. In other words, the arithmetic mean is another name for an average. A mean is a term used to describe the average.
Average = Sum / Count
Sum = 7.48 + 7.45 + 7.90 + 7.37 + 7.25 + 7.40 + 7.55 + 7.60
= 60 / 8
= 7.5
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A. (3,1)
B. (3,-1)
C. (-3,-1)
D.(-3,1)
Step-by-step explanation:
D) (-3, 1)
I is 3 steps away from the y axis, so counting 3 steps further you'll have (-3,1)
Mrs. Read can knit one pair of children's mittens with a ball of yarn six inches in diameter. How many pairs of identical mittens can she knit with a ball of yarn twelve inches in diameter
She can knit total 8 pairs of identical mittens with a ball of yarn twelve inches in diameter
In the given question, Mrs. Read can knit one pair of children's mittens with a ball of yarn six inches in diameter.
We have to find how many pairs of identical mittens she can knit with a ball of yarn twelve inches in diameter.
The radius of a ball of yarn six inches in diameter is
r = 6/2 = 3 inches
The radius of a ball of yarn twelve inches in diameter is
r = 12/2 = 6 inches
Now, the volume of the six inches yarn = [tex]\frac{4}{3} \pi r^3[/tex]
The volume of the six inches yarn = [tex]\frac{4}{3} \pi (3)^3[/tex]
The volume of the six inches yarn = 36π
Now, the volume of the twelve inches yarn = [tex]\frac{4}{3} \pi r^3[/tex]
The volume of the twelve inches yarn = [tex]\frac{4}{3} \pi (6)^3[/tex]
The volume of the twelve inches yarn = 288π
Now we finding the numbers of pairs of identical mittens she can knit with a ball of yarn twelve inches in diameter
= 288π/36π
= 8
Hence, she can knit total 8 pairs of identical mittens with a ball of yarn twelve inches in diameter.
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F18) if y varies jointly as x and the inverse of z, and y = -5 and z = 6, find y when x = 5 and z = -8
Answer:
gfifhdrtjttt9668ztjt*
help! I need this finished soon! I will give points and it’s just algebra!
Answer:
first:F
second:E
third: D
Step-by-step explanation:
Find the volume of a pyramid with a square base, where the side length of the base is 6.1\text{ m}6.1 m and the height of the pyramid is 4.7\text{ m}4.7 m. Round your answer to the nearest tenth of a cubic meter.
Answer:
58.3m^3
Step-by-step explanation:
volume of a pyramid = 1/3 x length x width x height
1/3 x (6.1 x 6.1 x 4.7) = 58.3 m^3
the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero
g Suppose that the retail price of a product has a normal distribution with a mean of $37 and a standard deviation of $20. Approximately, what is the probability that the price grows beyond double the mean
Retail price of the product will be double its mean will have a prbability of 0.0401.
What is Normal Distribution ?An example of a continuous probability distribution is the normal distribution, in which the majority of data points cluster in the middle of the range while the remaining ones taper off symmetrically toward either extreme. The distribution's mean is another name for the center of the range.
A probability distribution that is symmetric around the mean is the normal distribution, sometimes referred to as the Gaussian distribution. It demonstrates that data that are close to the mean occur more frequently than data that are far from the mean. The normal distribution appears as a "bell curve" on a graph.
The value of the product considering = $37*2 = $74(x)
Mean = $37
Standard Deviation (SD)= $20
here z= [tex]\frac{x - mean}{SD}[/tex] = [tex]\frac{74 - 37}{20} = \frac{37}{20} = 1.75[/tex]
P(z>1.75) = 1 - [tex]\phi(1.75)[/tex] = 1 - .9599 = 0.0401
Retail price of the product will be double its mean will have a prbability of 0.0401.
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A man wants to sell his house. He priced it at $150,000 the first day. The second day he reduced the price by 12%. What was the price of the house after this reduction
Answer:
$132,000
Step-by-step explanation:
Subtract 12% from 100%: 88%. Now convert 88% into a decimal fraction: 0.88. Finally, multiply $150,000 by (0.88). Answer: $132,000
Can u please help me with this question.
Answer:
you can use compass to make straight line
Given the sequence : 25, 21, 17,13,... Write the explicit equation that models the sequence.
Answer:
25,21,17,13,9,5,1
Step-by-step explanation:
Subtract.
(6х2 + 5) – (4x-3)
A. 6Х2 – 4x+2
В. 2х2 +8
Ос. 2х2 + 2
OD. 6х2 – 4х+8
Answer:
D
Step-by-step explanation:
[tex]6 {x}^{2} + 5 - 4x + 3[/tex]
simplifies down to
[tex]6 {x}^{2} - 4x + 8[/tex]
Answer:
A
Step-by-step explanation:
You cannot combine the unlike terms. The only thing you can do is combine the 5-3=2 then bring everything else down.
A study of teenage drivers found that 63% text while driving and 30% have a car accident in their first year of driving. 21% of teenage drivers text while driving AND have a car accident in their first year.
Find the probability that a teenager gets into an accident in the first year of driving, given that he or she texts while driving. Round your answer to the nearest hundredth.
Answer:
33.33%
Step-by-step explanation:
63% of teenage drivers text while driving
21% of teenage drivers text while driving and have car accident in their first year
This means that a third of teenage drivers that text while driving get involved in a car accident during their first year, 33.33% is the probability then
In ΔNOP,
m
∠
N
=
(
9
x
+
8
)
∘
m∠N=(9x+8)
∘
,
m
∠
O
=
(
4
x
+
13
)
∘
m∠O=(4x+13)
∘
, and
m
∠
P
=
(
2
x
−
6
)
∘
m∠P=(2x−6)
∘
. Find
m
∠
N
.
m∠N
Answer: 15
Step-by-step explanation: In ΔNOP,
m
∠
N
=
(
9
x
+
8
)
∘
m∠N=(9x+8)
∘
,
m
∠
O
=
(
4
x
+
13
)
∘
m∠O=(4x+13)
∘
, and
m
∠
P
=
(
2
x
−
6
)
∘
m∠P=(2x−6)
∘
. Find
m
∠
N
.
m∠N
A fish swims at an altitude of -20. 2 meters. A bird flies at an altitude of 38. 1 meters. Which animal is closer to sea level?
The fish is closer to sea level. Sea level is defined as the mean sea level, which is a fixed point of reference for measuring altitude.
The altitude of the fish is -20.2 meters, which is closer to sea level than the altitude of the bird at 38.1 meters. This means that the fish is closer to sea level than the bird. To explain further, sea level altitude is a point of reference that is used to measure the altitude of other objects. Sea level altitude is defined as the mean sea level which is a fixed point.
Therefore, when trying to determine which animal is closer to sea level, it is important to look at the altitude of both the fish and the bird. The altitude of the fish is -20.2 meters, which is closer to sea level than the altitude of the bird at 38.1 meters. This means that the fish is closer to sea level than the bird.
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If the ratio between students to female adults is 7:6 while female adults to male adults is 4:1. What is the ratio of students to male adults?
Answer: 14:3
Step-by-step explanation:
Given
Ratio between students(s) to female(f) adults is 7:6
while ratio between female(f) to male(m) is 4:1
So, we can write
[tex]\Rightarrow \dfrac{s}{f}=\dfrac{7}{6}\quad \ldots(i)[/tex]
Also, we can write
[tex]\Rightarrow \dfrac{f}{m}=\dfrac{4}{1}\quad \ldots(ii)[/tex]
Multiply both equations
[tex]\Rightarrow \dfrac{s}{f}\times \dfrac{f}{m}=\dfrac{7}{6}\times \dfrac{4}{1}\\\\ \Rightarrow \dfrac{s}{m}=\dfrac{14}{3}[/tex]
So, the ratio of the students to male adults is 14:3 .
A large helium balloon is tethered to the ground by two taut lines. One line is 100 ft. Long and makes an 80 degree angle with the ground. The second line makes a 40 degree angle with the ground. How long is the second line?
The second line is 153ft long.
We are making a figure out of the given statment. Where we have the Triangle ABC and other two Triangle ADB and ADC inside Triangle ABC. Here Angle ADC = 80 degress and Angle ACD = 40 egress.
According to given statement and figure,
In triangle ABO, AD= 100 ft
Hence, BD/AD = Cos80
or, BD = (100 * Cos80)
or, BD = 17.36 ft
Now, AB/AD = Sin80
or, AB = (100* Sin 80)
or, AB = 98.48
Now, In case of triangle ABC
AB/AC = Sin40
or, AC = AB/ Sin 40
or, AC = 98.48/ Sin40
or, AC = 153.2 ft (nearly equal to 153 ft)
The second line is 153ft long.
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Help me im struggling
Answer:
XZ/PR = XY/PQ
Step-by-step explanation:
because those are the only variables that lines up with the triangle and goes in order.
erite an equation and solve for x if the area of the rectangle is 55 square units
___3x-1___
5|
|
please help I found this one a bit confusing
Answer:
7.2
Step-by-step explanation:
To reach point D from point C, you need to add 4 to the x-value of point C and take away 6 from the y-value. These numbers are the sides of the hypothetical triangle.
The Pythagorean Theorem states that [tex]a^2+b^2=c^2[/tex]. If we plug the side lengths in for a and b, we get [tex]4^2 + 6^2 = c^2[/tex]. This can be simplified to [tex]16+36=c^2[/tex], or [tex]52 = c^2[/tex]. If we root both sides, we find that c is equal to [tex]\sqrt{52}[/tex], which is slightly more than 7, at around 7.2.
I need answers for A -F
Answer:
A. 103º
B. 96º
C. m<4 = m<10
D. m<1 = m<16
E. m<5 = m<13
F. m<14 + m<15 = 180º
(Not entirely sure for C-F... But I hope this helps!)
If A, B, and C represent three matrices of the same size and (A + B) + C = 0, then which statement is true?
Answer:
Statement c:
a₁₁ + ( b₁₁+ c₁₁ ) = 0
Step-by-step explanation:
The options are:
a: a₁₁ = 0 and b₁₁ = 0
b: a₁₁ - ( b₁₁ + c₁₁ ) = 0
c. a₁₁ + ( b₁₁+ c₁₁ ) = 0
d. a₁₁x( b₁₁ + c₁₁) = 0
We know that A, B, and C are matrices of the same size, so we can write:
[tex]A = \left[\begin{array}{ccc}a_{11}&a_{21}&...\\a_{21}&a_{22}&...\\...&...&...\end{array}\right][/tex]
[tex]B = \left[\begin{array}{ccc}b_{11}&b_{21}&...\\b_{21}&b_{22}&...\\...&...&...\end{array}\right][/tex]
[tex]C = \left[\begin{array}{ccc}c_{11}&c_{21}&...\\c_{21}&c_{22}&...\\...&...&...\end{array}\right][/tex]
And here we have the sum of matrices, remember that:
[tex]A + B = \left[\begin{array}{ccc}a_{11}&a_{21}&...\\a_{21}&a_{22}&...\\...&...&...\end{array}\right] + \left[\begin{array}{ccc}b_{11}&b_{21}&...\\b_{21}&b_{22}&...\\...&...&...\end{array}\right] = \left[\begin{array}{ccc}a_{11} + b_{11}&a_{21} + b_{12}&...\\a_{21} + b_{21}&a_{22} + a_{22}&...\\...&...&...\end{array}\right][/tex]
And we know that (A + B) + C = 0 (a matrix full of zeros)
then:
[tex]\left[\begin{array}{ccc}(a_{11} + b_{11}) + c_{11} &(a_{21} + b_{12}) + c_{12}&...\\(a_{21} + b_{21}) + c_{21}&(a_{22} + b_{22}) + c_{22}&...\\...&...&...\end{array}\right] = \left[\begin{array}{ccc}0&0&...\\0&...&...\\...&...&...\end{array}\right][/tex]
Then:
(a₁₁ + b₁₁ )+ c₁₁ = 0
These are real numbers, so we can rewrite this as:
a₁₁ + ( b₁₁+ c₁₁ ) = 0
Then statement c is the correct one.
Answer:
C
Step-by-step explanation:
unit test review edge 2021
The graph of function f is shown. An exponential function with vertex at (1, 3) and passes through (minus 2, 10), (8, 2) also intercepts the y-axis at 4 units. Function g is represented by the equation. g ( x ) = 4 ( 1 4 ) x + 2 Which statement correctly compares the two functions? A. They have the same y-intercept but different end behavior. B. They have different y-intercepts and different end behavior. C. They have the same y-intercept and the same end behavior. D. They have different y-intercepts but the same end behavior.
Answer:
Without being able to see the graph, it is not possible for me to accurately compare the two functions. Is it possible for you to provide more information about the functions or the graph?
Answer:
Step-by-step explanation:
graph please
What's an algebraic expression for:
Four times the combined number of apples and pears?
*no links allowed* .
Answer:
4(a+p) or 4a+4p
Step-by-step explanation:
Find the mean of the data in version a and round to the nearest tenth 20,20,24,24,25,25,25,25,26,26,26,27
Answer:
27 27 27
Step-by-step explanation:
as u can see it is going 25 25 25 three times so what u do with the 27 is this
27 27 27 three times. Hope This Helps
find the area of the rectangle whose length is 16cm and breath is 8am
Answer:128 cm^2
Step-by-step explanation:
Figure S is reflected over the y-axis and then rotated 90 clock wise. Which sided of figure T is congruent to side 1 of figure S.
Answer:
KL
Step-by-step explanation:
The sum of 7 and 12x is equal to 67.
By constructing an equation, find the value of x.
Answer:
X = 5
Step-by-step explanation:
67 - 7 =
60 / 12 =
x = 5
Answer:
7+12x=67
12x=67-7
x=60/12
x=5
Step-by-step explanation:
Equivalent fractions for 1 3/4 and 1 4/5 using 20 as the common denominator
Answer: 1 3/4 = 35/20 and 1 4/5 = 36/20
Step-by-step explanation:
1 3/4 = 7/4
Multiply top and bottom by 5 to get 35/20
1 4/5 = 9/5
Multiply top and bottom by 4 to get 36/20
Rami practices his saxophone for 56 hour on 4 days each week. How many hours does Rami practice his saxophone each week
This tells you he practiced for 3 2/6
How many hours does rami practice his saxophone each week?A finite collection of symbols that are properly created in line with context-dependent criteria is referred to as an expression, sometimes known as a mathematical expression.
We frequently have to understand a written phrase in order to write an expression. For instance, the notation x + 6 can be used to represent the phrase "6 added to some number," where x stands for the unknown value.
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. The following is the structure of an expression: Expression: (Number/Variable, Math Operator, Math Operator)
Given,
you take 5/6 and multiply it by 4/1.
which gives you 20/6
then reduce it by dividing the top number by the bottom number
which gives you 3 with a remainder of 2
you then place the remainder over the
This tells you he practiced for 3 2/6
The complete question is :Rami practices his saxophone for 5/6 hour on 4 days each week.
How many hours does Rami practice his saxophone each week?
[] 2/[] Hr
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LCM of 2, 6 and 11 must show work
The Least Common Multiple (LCM) of 2, 6, and 11 is 66.
What is the LCM of 6 and 11?We shall divide the numbers (6, 11) by their prime factors in order to determine the LCM of 6 and 11 using the division method (preferably common). The LCM of 6 and 11 is determined by the product of these divisors.
Step 1:Find the smallest prime number that at least one of the numbers, 6, or 11, can be factored into. As indicated by the ladder arrangement, place this prime number (2) to the left of the supplied numbers (6 and 11).
Step 2: Divide any of the supplied integers (6, 11) by 2 and write the quotient below it if it is a multiple of 2. Any number that is not divisible by the prime number should be brought down.
Step 3: Continue the procedure until there are only 1s left in the
The LCM of 6 and 11 is the product of all prime numbers on the left, i.e. LCM(6, 11) by division method = 2 × 3 × 11 = 66
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