If 20x = 54 and 2.xy=
100, what is y?
Answers
Answer:
y=18.51
Step-by-step explanation:
First we must figure out the value of "x". We can do that in the first equation. To find the value of "x" you divide both sides by 20. That will give you the value of "x" which is 2.7. With this information, you can plug in that value into the second equation to get the value of "y". 2(2.7)(y)=100. Multiply 2 and 2.7 to get 5.4. Then divide 5.4 from both sides to get the value of "y" which is around 18.51. I hope this helped.
Related Questions
There are 12 squares and 9 circles. What is the simplest ratio of circles to total shapes?
Answers
Answer:
0
Step-by-step explanation:
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
PLEASE HELP I NEED TO GET MY GRADE UP!!
Find the commission
Answers
6% of 750 =$45
The Bluejays and the Sparrows are two baseball teams. Rajib recorded the number of hits per season the players scored in the past 5 years in two box-and-whisker plots. The number of hits per year scored by Bluejays players is the top plot, and the number of hits per year scored by Sparrows players is the bottom plot. Compare the interquartile ranges.
Answers
Answer:
The answer is B
Step-by-step explanation:
The interquartile range of Bluejays is 40 and the interquartile range of Sparrows is 33. The correct option is B.
What is an interquartile range?The interquartile range is a measurement of a data set's "middle fifty." A range is a measurement of where a set's beginning and end are located. To get the interquartile range, we must know the first and third quartiles. To find those, we need to know the median of the data.
Given that the Bluejays and the Sparrows are two baseball teams. Rajib recorded the number of hits per season the players scored in the past 5 years in two box-and-whisker plots. The number of hits per year scored by Bluejays players is the top plot, and the number of hits per year scored by Sparrow's players is the bottom plot.
The interquartile range of Bluejays is 40 and the interquartile range of Sparrows is 33.
To know more about the interquartile range follow
https://brainly.com/question/4102829
#SPJ2
HELP PLEASE I REALLY NEED HELP
Answers
First step is take it out of fractions and into decimals, they are easier to work with.
(0.5x1.125)x(2.66x3.33)x7.5
Then PEMDAS
Parentheses
0.625x-0.66x7.5
Then multiply
-0.41625x7.5
Answer
-3.121875
so basically you can just tell me where the boxes go and bam you get 20 points
Answers
Step-by-step explanation:
(2/3)(-4)(9) = -24
(5/16)(-2)(-4)(-4/5)= -2
(-3/4)(7/8)=-21/32
(2 3/5) (7/9)=91/45
(5/6) x (-2)(-4) x (-4/5) -> -2
(-3/4) x (7/8) -> -21/32
(2 3/5) x (7/9) -> 91/45
Pls hurry!!!!! What’s the code?????
Answers
Second is m^12 =X
Third is y^9 = O
First is J^4 = O
Second is h^3 = O
Third is M^13 = O
Code is = OOO
I think. I haven’t done products in a long time. Tried my best tho
I need your help with this haha
Answers
Answer:
(4, 8) also known as option B. is the correct answer.
remember
x comes first
y comes second
and
x goes across
y goes up and down
Answer: the answer is ( 4, 8) which is the second choice .
Step-by-step explanation: the 4 is on the x axis line and the 8 is on the y axis line . So coordinates 4,8 represent E on the coordinateplane . HOPE IT HELPS YOU .PLEASE GIVE BRAINLIEST .THANKS .
Type a digit that makes this statement true.
7,176,260 is divisible by 3.
Submit
Answers
Answer:
1, 4 or 7
Step-by-step explanation:
The divisibility rule/shortcut for 3 is that the sum of its digits is divisible by 3. So, you currently have 29 (7+1+7+6+2+6+0), and you have to make that number divisible by 3.
adding 1 gets you 30, which we know is divisible by 3.
then, instead of trying every digit, we can note that
30 , 33 , 36 , 39 ....
are divisible by 3.
But the most we can add to the sum of 29 is 9 (because that is the highest digit possible)--so numbers above 38 are irrelevant
so, we want to find out if we can make 29 into 30, 33, or 36
adding 1 to 29 = 30
adding 4 to 29 = 33
adding 7 to 29 = 36
So, by making the first digit 1 , 4 , or 7, you make the number divisible by 3 (making the sentence true)
x-2y=3, x^2-2y=3, x^2-2xy+4y^2=11, find the value of x^2y-2xy^2
Answers
This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:
x^2-2y=3 - (x-2y=3) => x^2-x=0
Then we can factor the resulting equation and find the values of x:
x^2-x=0 => x(x-1)=0 => x=0 or x=1
Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:
x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1
Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:
x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1
Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.
I will award Brianliest please help *A triangle has sides 45, 4x and 2x−4. What is the possible range of x? show work please
Answers
Answer:
49 / 6 < x < 41 / 2
Step-by-step explanation:
Given:
Three sides are:
45, 4x and 2x−4
In a triangle, the sum of two sides is greater then another side .
So,
45 < 4x + (2x-4)4x < 45 + (2x-4)2x-4 < 45 + 4xFrom ineuality (1)
45 < 4x + (2x-4)
45 < 6x - 4
49 / 6 < x
From ineuality (2)
4x < 45 + (2x-4)
2x < 41
x < 41 / 2
So,
49 / 6 < x < 41 / 2
An American traveling in Japan wishes to exchange American money for Japanese money. If the exchange rate is $1 = 80 yen, then how many dollars will the traveler need to purchase 10,000yen?
Answers
Answer: $125
Step-by-step explanation:
1/80=x/10,000
10,000/80=125
Hope this helped!
Answer:125 yen
Step-by-step explanation:
Ratio and proportion
Ratio=1:80=x:10,000
x represents dollars which is unknown
1/80=x/10,000
Then you cross multiply
80x=10,000
80x/80=10,000/80
x=125
Therefore,$125 will give you 10,000yen
Here is the picture for my most recent question.
Answers
Answer:
what is it asking 4
Step-by-step explanation:
ELLO PEOPLES. ANSWER THIS PLS (better be right)
The graph below shows the cost of pens based on the number of pens in a pack. What would be the cost of one pen?
Answers
Answer:
1.5 dollars
Step-by-step explanation:
Answer:
Step-by-step explanation:
We notice that every time one the number increases, it increases by 3. To find it, first we subtract 4.5 and 3 to get 1.5 and this point is going to be (2, 1.5) Now, to find the cost of 1, we have to subtract 3 again to get (1, -1.5)
The cost of one pen is -1.5
LMNP is rotated 90 clockwise around the origin
What are the coordinates of L'?
A. L’(0, -1)
B. L’(-1, 0)
C. L’(1, 0)
D. L’(0, 1)
Answers
how to write this in a inequality 69.50 dollars + 5 dollars is 74.50 dollars add 5 dollars 79.50 add 5 dollars again and 84.50
Answers
69.50 +(3 x 5) = 84.5
Note- It seems something is missing from this problem,I answered you other question you may want to look their for better explanation of the problem.
HOPE THIS HELPS & GOOD LUCK.
8,869 divided by 3= and can yall help me with other question im gonna post
Answers
Answer:
2956.33333333
................................
Answer:
2956.33333333
Step-by-step explanation:
BRAINLIEST?
ASAP some answer this ASAP
Answers
Answer:
(-3, 7)
Step-by-step explanation:
minus the x value by 2, minus the y value 3, rule for reflection over line y=-x is (-x, -y), so just swap the signs, and thats your answer.
Solve for y.
−2y+7=−5
Responses
y = 6
y = 1
y = -1
y = -6
Answers
Answer: y = 6
Step-by-step explanation:
1. Subtract 7 from both sides to isolate -2y.
-2y = -12
2. Divide both sides by -2 to isolate the y.
y = 6
pls help due soon ty
Answers
the second table: y=1.5x
the third table: y= 1.25x
if you want help on how to do it: plug each of those equations into the “desmos” graph! from looking at those table points (x,y) you can find which equation matches the table
for instance on table one: I put y=4x into desmos then looked at graph one, I chose the point (2,8) I went to 2 on the x axis and moved my finger up 8 and that point was directly on the line meaning that table matches the equation. be sure to also do the same thing with the other points to double check!
Answer:
The first table matches with the last equation.
The second table matches with the first equation.
The last table matches with the second equation.
Step-by-step explanation:
What I did was plug in the number in the x section for each table to see if the result of x times the number such as 4 resulted in the same number, y, that was paired with the x number based on the table.
Ex: Using table 1,
y=4x
y=4(2) --> I substituted the x for row 1 x in table 1
y=8
Check:
The first table shows that for row 1, the y was 8 so our match was correct.
Hope this helps!
please help me i will give brainliest to first person to anwser.
Answers
First we start with the formula for cylinders v=(pi)r(squared)h filled in Thats v=(3.14)(8 squared) (8) which brings us to the answer 1607.68 but you must round to the nearest tenth aka 1607.7
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
A box contains 6 red marbles, 4 green marbles, 3 blue marbles, and 2 yellow marbles. If Greg chooses one marble at random 300 times, how many times would he expect the marble to be blue?
Answers
Answer:
\(60\) times
Step-by-step explanation:
There are \(6+4+3+2=15\) marbles in total. Out of those, \(3\) are blue, so the probability of pulling a blue marble is \(\frac{3}{15}=\frac{1}{5}\). However, this is only the probability of pulling a blue marble when \(1\) marble is pulled at random. Therefore, we can expect a blue marble to be pulled \(\frac{1}{5}*300=60\) times if \(1\) marble is pulled \(300\) times at random. Hope this helps!
Triangle NGM is reflected across the x-axis, and is dilated by a factor of
\(2 \frac{1}{2} \)
what are the coordinates of vertices N'G'M'
![Triangle NGM is reflected across the x-axis, and is dilated by a factor of [tex]2 \frac{1}{2} [/tex]what](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/72KqTh42y5ufcNCXgnAIojzv21Q5WAGP.jpeg)
Answers
The coordinates of vertices N'G'M' are N'(-10, -15), M'(-15, -5) and G'(-5, -10).
From the given graph, N(-4, 6), M(-6, 2) and G(-2, 4).
Scale factor = \(2\frac{1}{2}\)
= 2.5
The reflection of point (x, y) across the x-axis is (x, -y).
Here, N(-4, 6)→(-4, -6)
M(-6, 2)→(-6, -2)
G(-2, 4)→(-2, -4)
Now, with scale factor 2.5, we get
(-4, -6)→2.5(-4, -6)→N'(-10, -15)
(-6, -2)→2.5(-6, -2)→M'(-15, -5)
(-2, -4)→2.5(-2, -4)→G'(-5, -10)
Therefore, the coordinates of vertices N'G'M' are N'(-10, -15), M'(-15, -5) and G'(-5, -10).
To learn more about the reflection over x-axis visit:
https://brainly.com/question/15175017.
#SPJ1
HELP PLEASE!!! A flower bed is in the shape of a triangle, with a base of 15 feet and a height of 9 feet. What is the area of the flower bed?
24 square feet
32.5 square feet
67.5 square feet
135 square feet
Answers
Answer:
C) 67.5 square feet
Step-by-step explanation:
the equation for finding the area of a triangle is height times the base divided by 2. so it would be 15/2 then multiplied by 9
Area of triangle equation is :
(Base x height) /2
15 x 9 = 135
135/2= 67.5
At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.
Ketchup Relish Chili
54 36 60
Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042
Answers
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Answer:
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Step-by-step explanation:
Please Hurry. I need this answer quickly please.
Answers
Answer:63
Step-by-step explanation:
multiply 72 by 7 then divide i by 8
(72×7)/8
=63
It's 63.
simplify the equation 7/8×72 multiple 7×9 solution is 63
The table below models the cost, y, of using a high-efficiency washing machine and a standard washing machine over x number of years.
Which equation represents the cost of the high-efficiency washing machine over a given number of years?
Which equation represents the cost of the standard washing machine over a given number of years?
After how many years of use would the washing machines cost the same amount?
Which washing machine would be the more practical purchase if kept for 9 years?
Answers
Here now you won’t waste the ad I got you guys
Answer:
1. A y = 25x + 500Which equation represents the cost of the high-efficiency washing machine over a given number of years?
2. B y = 30x + 400Which equation represents the cost of the standard washing machine over a given number of years?
3. D 20After how many years of use would the washing machines cost the same amount?
4. B standard machineWhich washing machine would be the more practical purchase if kept for 9 years?
PLEASE HELP QUICK!!!!
Read the triple beam balances and record the answer to the .1 grams
Answers
Answer:
Hens and enwkemebrkele
Step-by-step explanation:
Compare the fractions, and write > or < or = for your answer.
4 7
─ ─
6 9
8 7
─ ─
10 9
6 8
─ ─
4 5
2 4
─ ─
12 8
6 5
─ ─
9 12
3 5
─ ─
8 6
2 5
─ ─
9 7
6 2
─ ─
10 3
3 4
─ ─
6 11
5 3
─ ─
11 6
Answers
Answer:
\(\frac{4}{6} < \frac{7}{9}\) ; \(\frac{8}{10} > \frac{7}{9}\) ; \(\frac{6}{4} < \frac{8}{5}\) ; \(\frac{2}{12} < \frac{4}{8}\) ; \(\frac{6}{9} > \frac{5}{12}\) ; \(\frac{3}{8} < \frac{5}{6}\) ; \(\frac{2}{9} < \frac{5}{7}\) ; \(\frac{6}{10} < \frac{2}{3}\) ; \(\frac{3}{6} > \frac{4}{11}\) ; \(\frac{5}{11} < \frac{3}{6}\)
Step-by-step explanation:
For each comparsion, simplify, find the common denominator, then compare.
(a)
Simplify \(\frac{4}{6}=\frac{2}{3}\)
Then between 3 and 9, the lowest common denominator would be 9.
This gives: \(\frac{2}{3} = \frac{6}{9}\) and \(\frac{7}{9}\) stays the same.
Therefore \(\frac{6}{9} < \frac{7}{9}\) and \(\frac{4}{6} < \frac{7}{9}\)
(b)
Simplify \(\frac{8}{10}=\frac{4}{5}\)
Then between 5 and 9, the lowest common denominator would be 45.
This gives: \(\frac{4}{5} = \frac{36}{45}\) and \(\frac{7}{9} = \frac{35}{45}\)
Therefore \(\frac{36}{45} > \frac{35}{45}\) and \(\frac{8}{10} > \frac{7}{9}\)
(c)
Simplify \(\frac{6}{4}=\frac{3}{2}\)
Then between 2 and 5, the lowest common denominator would be 10.
This gives: \(\frac{3}{2} = \frac{15}{10}\) and \(\frac{8}{5} =\frac{16}{10}\)
Therefore \(\frac{15}{10} < \frac{16}{10}\) and \(\frac{6}{4} < \frac{8}{5}\)
(d)
Simplify \(\frac{2}{12}=\frac{1}{6}\) and \(\frac{4}{8} = \frac{1}{2}\)
Then between 2 and 6, the lowest common denominator would be 6.
This gives: \(\frac{1}{6}\) stays the same and \(\frac{1}{2} =\frac{3}{6}\)
Therefore \(\frac{1}{6} < \frac{3}{6}\) and \(\frac{2}{12} < \frac{4}{8}\)
It's a similar process for the rest and you can always verify your answer with a calculator. If you need more help with the rest just say so! Hope this helps.
Also, when in doubt of finding a common denominator just multiply the two denominators. For example in (b) the lowest common denominator between 5 and 9 = 5*9=45.
ANSWER THIS CORRECTLY TO BE BRAINLIEST
Answers
Answer:
Q6. -5/2
Q7. -7/24
Q8. 127/24
Q9. 151/12
Step-by-step explanation:
Q6. (−3/4)+(−7/4) = -3-7/4 = -10/4 = -5/2
Q7. 3/8 - 2/3 = 3*3/8*3 - 2*8/3*8 = 9/24 - 16/24 = 9-16/24 = -7/24
Q8. 18+2/3 - 8+3/8 = 20/3 - 11/8 = 20*8/3*8 - 11*3/8*3 = 160-33/24 = 127/24
Q9. 12+1/4 + 27+1/3 = 13/4 + 28/3 = 13*3/12 + 28*4/12 = 39 + 112/12 = 151/12
9 : 32 1/3