A dot plot titled seventh grade test score. There are 0 dots above 5, 6, 7, 8 and 9, 1 dot above 10, 1 dot above 11, 2 dots above 12, 1 dot above 13, 1 dot above 14, 2 dots above 15, 3 dots above 16, 3 dots above 17, 2 dots above 18, 2 dots above 19, 3 dots above 20. A dot plot titled 5th grade test score. There are 0 dots above 5, 6, and 7, 1 dot above 8, 2 dots above 9, 10, 11, 12, and 13, 1 dot above 14, 3 dots above 15, 2 dots above 16, 1 dot above 17, 2 dots above 18, 1 dot above 19, and 1 dot above 20.
Students in 7th grade took a standardized math test that they also had taken in 5th grade. The results are shown on the dot plot, with the most recent data shown first.
Find and compare the means to the nearest tenth.
7th-grade mean:
5th-grade mean:
What is the relationship between the means?
Answers
Note that 7th grade mean = 277.86
the 5th grade mean = 254.77
So th relationship between the mean is that the 7 th grade mean is higher than the 5 th grade mean .
How is this so ?To compute the means here is what we did
7 th grade mean = (1 × 10) + (1 × 11) + (2 × 12) + (1 × 13) + (1 × 14) + (2 × 15) + (3 × 16) + (3 × 17) + (2 × 18) + (2 × 19) + (3 × 20) / 21
= 277.857142857
≈ 277.86
For the 5th grade mean
5th grade mean = (1 × 8) + (2 × 9) + (2 × 10) + (2 × 11) + (2 × 12) + (1 × 13) + (3 × 15) + (2 ×16) + (1 × 17) + (2 × 18) + (1 × 19) + (1 × 20) / 26 = 12.5
= 254.769230769
≈ 254.77
This means that trully, the relationship between the mean is that the 7 th grade mean is higher than the 5 th grade mean.
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Related Questions
Cellular phone usage grew about 22% each year from 1995 (about 34 million) to 2003. Write a function to model cellular phone usage over that time period. What is the cellular usage in 2003?
Answers
Answer:
Given the information you provided, we can model cellular phone usage over time with an exponential growth model. An exponential growth model follows the equation:
`y = a * b^(x - h) + k`
where:
- `y` is the quantity you're interested in (cell phone usage),
- `a` is the initial quantity (34 million in 1995),
- `b` is the growth factor (1.22, representing 22% growth per year),
- `x` is the time (the year),
- `h` is the time at which the initial quantity `a` is given (1995), and
- `k` is the vertical shift of the graph (0 in this case, as we're assuming growth starts from the initial quantity).
So, our specific model becomes:
`y = 34 * 1.22^(x - 1995)`
To find the cellular usage in 2003, we plug 2003 in for x:
`y = 34 * 1.22^(2003 - 1995)`
Calculating this out will give us the cellular usage in 2003.
Let's calculate this:
`y = 34 * 1.22^(2003 - 1995)`
So,
`y = 34 * 1.22^8`
Calculating the above expression gives us:
`y ≈ 97.97` million.
So, the cellular phone usage in 2003, according to this model, is approximately 98 million.
HELPPP
PLLS
DUE RN
WILL
GIVE BRAINLIST
X
X
X
X
Answers
Answer:
25 11/28
can i have brainliest now lol
Answer:
\(25\frac{11}{28}feet\)
Step-by-step explanation:
\(3+13\frac{1}{7} + 9\frac{1}{4}\)
\(3+22\frac{11}{28}\)
\(25\frac{11}{28}\)
Bally Manufacturing sent Intel Corporation an invoice for machinery with a $13,200 list price. Bally dated the invoice July 26 with 5/10 EOM terms. Intel receives a 40% trade discount. Intel pays the invoice on August 08. What does Intel pay Bally?
Answers
In the given question, Intel pays Bally a total of $7920 according to the given discount.
What is Discount?Discount is the state of having a bond's price lower than its face worth. The difference between the purchase price and the item's par worth is the discount.
Discounts are different types of price reductions or deductions from a product's cost. It is frequently employed in consumer interactions where consumers receive discounts on a range of goods. The percentage reduction rate is provided.
What is EOM?You may see a payment period on an invoice of the form N/10 EOM. The first 10 are the amount of days, and the n stands for net. N/10 denotes that the invoice's money is due in 10 days. End of the month is referred to as EOM. N/10 EOM therefore indicates that you must pay the invoice in full 10 days following the end of the month.
In the given question,
Invoice=$13200
Discount received by Intel=40%
The invoice is dated for July 26, however the payment paid by Intel was on August 08 (after 10 days). Therefore, only the 40% discount will apply.
Discount amount= 40% of 13200
=(4/10)*13200
= 5280
Amount to be paid = 13200-5280
= $7920
Intel will pay $7920.
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jack is thinking of two whole numbers
the sum of the number is 13
the difference between the numbers is 1
what is the product of the numbers
Answers
Answer:
Their product is 42
Step-by-step explanation:
Let the numbers be A and B
Such that:
\(A + B = 13\)
\(A - B = 1\)
Required
Determine A * B
Add both equations together:
\(A + A + B - B = 13 + 1\)
\(2A = 14\)
Solve for A
\(A = 7\)
Substitute 7 for A in the second equation
\(7 - B = 1\)
Make B the subject
\(B = 7 - 1\)
\(B = 6\)
Hence,
A = 7 and B = 6
So:
\(A * B = 7 * 6\)
\(A * B = 42\)
The product of the two numbers will be 42.
Let the two numbers be A and B
A + B = 13
A - B = 1
A = 1 + B.
Therefore, since A + B = 13, then (1 + B) + B = 13
1 + 2B = 13
2B = 13 - 1
2B = 12
B = 6
A = 6 + 1 = 7
Since the numbers are 6 and 7, then multiplying them is 42.
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Mr. Howell teaches four geometry classes.
On the last test he gave, 95% of the
students passed the test, 60% studied for
the test, and 48% both studied and passed
the test. If a student is chosen at random,
what is the probability that they passed the
test, given that they studied?
Answers
Answer:
0.8
Step-by-step explanation:
I'm just writing this
3. There were 120 counters in a box. The numbers of red, blue and green counters were in the ratio 5: 2:3 respectively. Fiona put another 45 counters into the box As a result, the number of red counters was increased by 20% and the number of blue counters was increased by 25%. (a) How many green counters were there in the box at first? (b) By what percentage was the number of green counters increased?
Answers
Answer:
a) There were 36 green counters in the box in the beginning.
b) The green counters increased by 75%
Step-by-step explanation:
Red: 5
Blue: 2
Green: 3
Total: 10
Red 5/10 x 120 = 60
Blue: 2/10 x 120 = 24
Green 3/10 x 120 = 36
45 more counters were added. The total counters is now 165.
Red increased by 20%
60 + .2(60) = 72
Blue increased by 25%
24 + .25(24) = 30
Greens: 165 - 72 - 30 = 63
The greens were 36 and they increases to 63
\(\frac{63 - 36}{36}\) = .75 and .75 as a percentage is 75%
A window washer earns $4 per window. Which equation represents the relationship between his total earnings and the number of windows he washes?
Answers
Simplify.
−6i−44−−−−√
Enter your answer, in simplest radical form, in the box.
Answers
Expressions that have the square root sign are said to be radicals.
The simplified form of \(-6i\sqrt{-44}\) is \(12\sqrt{11}\)
The expression is given as:
\(-6i\sqrt{-44}\)
Start by splitting the expression
\(-6i\sqrt{-44} = -6 \times i \times \sqrt{-44}\)
Factorize -44
\(-6i\sqrt{-44} = -6 \times i \times \sqrt{-1} \times \sqrt{44}\)
In complex numbers;
\(i = \sqrt{-1\)
So, we have:
\(-6i\sqrt{-44} = -6 \times \sqrt{-1} \times \sqrt{-1} \times \sqrt{44}\)
Express \(\sqrt{-1} \times \sqrt{-1}\) as \(-1\)
\(-6i\sqrt{-44} = -6 \times -1 \times \sqrt{44}\)
\(-6i\sqrt{-44} = 6 \times \sqrt{44}\)
Express 44 as 4 x 11
\(-6i\sqrt{-44} = 6 \times \sqrt{4} \times \sqrt{11}\)
Express \(\sqrt 4\) as \(2\)
\(-6i\sqrt{-44} = 6 \times 2 \times \sqrt{11}\)
\(-6i\sqrt{-44} = 12 \times \sqrt{11}\)
\(-6i\sqrt{-44} = 12\sqrt{11}\)
Hence, the simplified expression is: \(12\sqrt{11}\)
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Rectangle A measures 20 cm by 4 cm. Rectangle B is a scaled copy of Rectangle A. Select ALL of the measurement pairs that could be the
dimensions of Rectangle B.
100 cm by 20 cm
15 cm by 5 cm
12.5 cm by 2.5 cm
20 cm by 5 cm
5 cm by 1 cm
Answers
The measurement pairs that could be the dimensions of rectangle B are 100 cm by 20 cm, 12.5 cm by 2.5 cm, and 5 cm by 1 cm.
The rectangle A measures 20 cm by 4 cm.
The ratio of the dimensions of rectangle A is 20:4 = 5.
Rectangle B is a scaled copy of rectangle A.
The dimensions of rectangle B must be in the same ratio as those of rectangle A.
The first set of dimensions is 100 cm by 20 cm.
The ratio of dimensions is 100:20 = 5.
Thus, these could be the dimensions of the rectangle B.
The second set of dimensions is 15 cm by 5 cm.
The ratio of dimensions is 15:5 = 3.
Thus, these cannot be the dimensions of the rectangle B.
The third set of dimensions is 12.5 cm by 2.5 cm.
The ratio of dimensions is 12.5:2.5 = 5.
Thus, these could be the dimensions of the rectangle B.
The fourth set of dimensions is 20 cm by 5 cm.
The ratio of dimensions is 20:5 = 4.
Thus, these cannot be the dimensions of the rectangle B.
The fifth set of dimensions is 5 cm by 1 cm.
The ratio of dimensions is 5:1 = 5.
Thus, these could be the dimensions of the rectangle B.
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Express the solution graphically of 1/4 (x-3) ≤ -2
Answers
Answer:
Step-by-step explanation:
x = 5
Solution of 1/4 (x-3) ≤ -2 is x ≤ 5 . The value of x will be less than or equal to 5 .
Graph is attached below.
Given,
1/4 (x-3) ≤ -2
Now,
Inequality : 1/4 (x-3) ≤ -2
Solve for x,
x - 3 ≤ -8
Take -3 from LHS to RHS.
-3 will be converted to 3 in RHS .
x ≤ -8 + 3
x≤ -5
The value of x will be less than or equal to -5.
The graph of inequality is attached below and represents the the value of x is less than or equal to 5 .
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In a poll of 100 randomly selected people at a mall, 38 people make less than $50,00 a year and 23 people made more than $100,000 a year. If I had to choose one of the people polled at random, what is the probability I pick someone that makes less than $50,000 or more than $100,000?
Answers
Answer:
61%
Step-by-step explanation:
First we need to add the two numbers,38 and 23.Then we will get 61.To convert a number into a probability . we will have to take change the value.100 turns into 1 and 61 turns in to 0.61.Then to convert it into a percentage, which will give us our answer 61%.
47 Answer:
The sum of two numbers is -12. One of the numbers is 4. What is the
other number? _____
48 Answer:
The product of two numbers is -12. One of the numbers is 4. What is the
other number? _____
49 Answer:
A number decreased by 4 equals -12. What is the number? _____
50 Answer:
The quotient of a number divided by 4 is -12. What is the number? _____
Answers
Answer :
47 Answer : -16 + 4 = -12
48 Answer : -3 x 4 = -12
49 Answer : -8 - 4 = -12
50 Answer : -48 / 4 = -12
What is the area of the square that measures 3.1 m on each side
Answers
The area of the square with a side length of 3.1 meters is 9.61 square meters.
To find the area of a square, we need to multiply the length of one side by itself. In this case, the square has a side length of 3.1 m.
Area of a square = side length × side length
Substituting the given side length into the formula:
Area = 3.1 m × 3.1 m
To perform the calculation:
Area = 9.61 m²
It's worth noting that when calculating the area, we are working with squared units. In this case, the side length is in meters, so the area is expressed in square meters (m²). The area represents the amount of space enclosed within the square.
Remember, to find the area of any square, you simply need to multiply the length of one side by itself.
The area of the square with a side length of 3.1 meters is 9.61 square meters.
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3.
A Ferris Wheel has a circumference of 78.5 feet. Which expression can be used to find the
radius of the Ferris Wheel?
Please help
Answers
Answer:
G. 78.5 / π
{ i hope this helps :) i'm sorry if its wrong }
What’s the correct answer for this question?
Answers
Half of its original value=
\(\frac{1350}{2} \\ =675\)
Years for the television set to be worth half of its original value=
\(\frac{675}{2}\\ =4.0909...\)
≈ 4.1
Two angles of a triangle have the same measure and the third one is 54 degrees greater than the measure of each of the other two. Find the measure of the LARGEST angle in the triangle.
Answers
Answer:
Step-by-step explanation:
obtuse.
kinds of numeric number
Answers
10
Use the diagram shown.
4
If m_1 = (4x + 2) and m_3 = (5x - 15), what is the value of x?
Answers
Answer:15
Step-by-step explanation:
Can someone please solve ASAP?
Answers
Answer: x = 101
Step-by-step explanation:
Answer:
101
Step-by-step explanation:
A family are going away for the weekend. They look at a road map to see where their hotel is.
The scale used is 1:250,000
The distance to their hotel measures 8.5 cm on the map.
What is the actual distance?
km
Answers
Answer:
106.25km
Step-by-step explanation:
8.5cm = 0.000085km
map:real life
1:1250000
0.000085km : 0.000085km * 1250000 = 106.25km
A rug had a length of 9 feet and a width of 3 feet what is the perimeter of the rug
Answers
Answer:
24 ft
Step-by-step explanation:
to find the perimeter of rug is you have to add 9+9+3+3= 24
Write 135 as a product of its prime factors. Write your answer in index form need answer quickly URGENT
Answers
135 as a product of its prime factors is written as 3 × 3 x 3 x 5
What are prime factors?The prime factors are those prime digits that can divide a particular digit evenly and without leaving any remainder. To put it differently, these are the main digits that, when multiplied with one another, result in the initial number.
In mathematics and number theory, prime factors hold significant value as they enhance comprehension of number properties and interconnections. In addition, they are utilized in a range of mathematical calculations and algorithms.
From the information given, we have the value as;
135
The prime factors are 3 × 3 x 3 x 5
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8. Chelsea ate 0.2 of a pound of
chocolate cake at her birthday
party. Her friend Emily ate more
than her. Which decimal is more
than 0.2?
A.0.3
B. 0.19
C.0.11
Answers
a. vhysyfjgjjchddyyf if if hjd
what is 0.067 reccuring as a fraction
Answers
Answer:
67/1000
Step-by-step explanation:
How to translate 0.067 to a fraction:
So you can there is the tenths place (which is considered 0 on the decimal behind the point.) The hundredths place (where the 6 is placed), and the thousandths place (where the 7 is placed.)
Since the 7 is placed at the thousandths place, that means the denominator would be 1000. The number behind the point is .067.
So the fraction would be this:
67/1000
(Also it's at it's simplest form.)
Solve the system of equations.
2x−9y=14
x=−6y+7
Answers
Step-by-step explanation:
\(put \: x \: into \: equation \: 1\)
\(2( - 6y + 7) - 9y = 14\)
\( - 12y + 14 - 9y = 14\)
\( - 21y + 14 = 14\)
\( - 21y = 14 - 14\)
\( - 21y = 0\)
\( \frac{ - 21y}{12} = \frac{0}{21} \)
\(y = 0\)
\(put \: y = 0 \: into \: equation \: 2\)
\(x = 6y + 7\)
\(x = 6(0) + 7\)
\(x = 0 + 7\)
\(x = 7\)
Answer:
y = 0
x = 7
Step-by-step explanation:
2x − 9y = 14 ⇒ ( 1 )
x = − 6y +7 ⇒ ( 2 )
First, let us find the value of y.
For that, replace x with ( - 6y + 7 ).
Let us take equation 1 for that.
2x − 9y = 14
2 ( - 6y + 7 ) - 9y = 14
-12y + 14 - 9y = 14
21y = 14 - 14
21y = 0
Divide both sides by 21.
y = 0
And now let us take equation 2 to find the value of x by replacing y with 0.
2x − 9y = 14
2x - 9 × 0 = 14
2x - 0 = 14
2x = 14
Divide both sides by 2.
x = 7
Christian rented his books from the internet for a price represented by the equation below. Lela rented her books from the bookstore for the price represented in the table. Who pays more money for each additional day (d) after day 0?
Answers
A pile of cards contains eight cards, numbered 1 through 8. What is the probability of NOT choosing the 6?
Answers
The probability of NOT choosing the 6 is 7/8.
What is the probability?Probability is used to calculate the likelihood that a random event would happen. The chances that the random event happens is a probability value that lies between 0 and 1. The more likely it is that the event occurs, the closer the probability value would be to 1. If it is equally likely for the event to occur or not to occur, the probability value would be 0.50.
The probability of NOT choosing the 6 = number of cards that are not 6 / total number of card
Cards that do not have a value of 6 = 1, 2, 3, 4, 5, 7, 8
Total is 7
The probability of NOT choosing the 6 = 7 / 8
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5/100 in simplest form
Answers
Answer:1/20
Step-by-step explanation:
trust
Answer:
1/20
Step-by-step explanation:
5 divided by 100 is =20
5divided by 5 is =1
=1/20
Which polynomial is prime?
a. x³+3x²+2x+6
b. x³+3x²-2x-6
c. 10x²-4x+3x+6
d. 10x²-10x+6x-6
Answers
May I have brainliest please thank you !
The ratio of hydrogen atoms to nitrogen atoms in a container is 2:3 what is the value of 2:3
Answers
The value of 2:3 can be written as a fraction: 2/3.
What is the ratio?
In mathematics, a ratio is a comparison of two quantities, often expressed as a fraction or using the colon (:) symbol. Ratios are used to indicate the relative size or amount of two or more things.
For example, the ratio of the length of a rectangle to its width can be expressed as a fraction, where the numerator represents the length and the denominator represents the width.
The ratio of hydrogen atoms to nitrogen atoms is 2:3.
This means that for every 2 hydrogen atoms, there are 3 nitrogen atoms in the container. The value of the ratio 2:3 is a way of expressing the relative quantity of hydrogen atoms to nitrogen atoms in a simplified form. It can also be written as a fraction: 2/3.
Hence, the value of 2:3 can be written as a fraction: 2/3.
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