Jackie is knitting a scarf with her grandmother. Yesterday, her grandmother used 2/3 of a skein of wool and Jackie used 1/3 of a skein. How much more wool did Jackie's grandmother use than Jackie?
Write your answer as a fraction or as a whole or mixed number.
Answers
Answer:
1/3 more
Step-by-step explanation:
2/3 - 1/3 = 1/3
Answer:
1/3
Step-by-step explanation:
2/3 - 1/3 = 1/3
therefore the difference between the numbers is 1/3.
Related Questions
30 POINTS! ANSWER THE QUESTION SHOWN IN THE IMAGE WITH CLEAR ANSWER
Answers
Y=a-2x, y=b-x
Find like terms
Y=6-4- (-3)* 3/5
Then see what’s the same or look at what is similar. If a letter is by itself, it equals one
PLEASE LOOK AT THE IMAGE AND HELP!!
Answers
However, since it is still equaling to a negative exponent of 2, we must convert it into a positive fraction.
We can simply do this by putting a “1” on the top, as a numerator, and 12^2 on the bottom as a positive power.
Therefore, your answer is 1/12^2.
(2).
please help
worth 15 points
Answers
.00390625 is the answer I got
Answer:
Hi! Answer: 1/256
Step-by-step explanation:
Apple exponent rule a^-b= 1/a^b
4^-4= 1/4^4
=1/4^4
4^4=256
so therefore, it is 1/256
Describe the graph of 2x - 3y > 18, including intercepts, line style, and shading.
Answers
Step-by-step explanation:
hope it helps please follow me
The graph of 2x - 3y > 18 is a dotted line passing through the intercepts (9, 0) and (0, -6).
What is Linear Inequalities?Linear inequalities are defined as those expressions which are connected by inequality signs like >, <, ≤, ≥ and ≠ and the value of the exponent of the variable is 1.
Given inequality is 2x - 3y > 18.
Since the inequality sign does not include =, the line will be dotted.
Since the equation is linear, graph will be a line.
Consider 2x - 3y = 18
When x = 0, -3y = 18 or y = -6
y intercept is -6.
When y = 0, 2x = 18 0r x = 9
x intercept is 9.
The line touches the X axis at (9, 0) and the Y axis at (0, -6).
At origin (0, 0), the inequality 0 > 18 is not true.
Hence the shading of the graph will be below the line where the point origin is not included.
Hence the graph is given below.
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A project will take a total of 720 person-days to complete. If the project must be completed in 30 days, how many people must be employed? PLEASE HURRY
Answers
Answer:
192 hours per day / 8 hours per person per day = 24 people
Step-by-step explanation:
Assuming each person works for 8 hours a day, the total number of hours needed to complete the project is:
720 person-days x 8 hours = 5,760 hours
To complete the project in 30 days, the total number of hours needed per day is:
5,760 hours / 30 days = 192 hours per day
The person that is the most kind gets a brainiest award
P.S: evaluate this function: f(x) = 3x^2+5x+6
Answers
Explanation:
This is unable to be evaluated due to the function not being stated. X has to be a number for us to be able to solve the equation and for It to be evaluated. 3x to the second power is gonna stay that since there isn't another power integer on 5x and 6 is staying like that since there is nothing for it to be added or subtracted to.
So the answer is simply:
3x^2+5x+6
If point D' is the image of D(-2,1) under a reflection across the x-axis. What are the coordinates of D'?
Answers
Answer:
(-2, -1)
Step-by-step explanation:
When reflecting across the x-axis, the x coordinate remains the same, but the y-coordinate turns to its opposite. So to get D from D', keep -2, and make 1 a -1.
How does the decimal point move when 50.2 is multiplied by 1102?
Answers
Step-by-step explanation:
50.2 = 5.02 × 10¹
1102 = 1.102 × 10³
so,
50.2 × 1102 = 5.02 × 1.102 × 10³×10¹ =
= 5.02 × 1.102 × 10⁴
so, the decimal point moves 3 positions to the right :
55,320.4
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
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Bay Side School Seaside School
8, 6, 5 0 5, 8
8, 6, 5, 4, 2, 0 1 0, 1, 2, 5, 6, 8
5, 3, 2, 0, 0 2 5, 5, 7, 7, 8
3 0, 6
2 4
Key: 2 | 1 | 0 means 12 for Bay Side 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)
PLEASE HELP ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Part A: To calculate the measures of center, we can find the median and the mean for each school.
For Bay Side School, the median class size is the average of the 8th and 9th values when the data is sorted in ascending order. The 8th and 9th values are both 25, so the median class size is 25.
To find the mean class size for Bay Side School, we can add up all the class sizes and divide by the total number of classes. The sum of the class sizes is 12 + 12 + 12 + 14 + 15 + 15 + 16 + 16 + 18 + 18 + 20 + 20 + 23 + 25 + 25 = 243. There are 15 classes, so the mean class size is 243/15 ≈ 16.2.
For Seaside School, the median class size is the average of the 8th and 9th values when the data is sorted in ascending order. The 8th and 9th values are both 15, so the median class size is 15.
To find the mean class size for Seaside School, we can add up all the class sizes and divide by the total number of classes. The sum of the class sizes is 10 + 10 + 10 + 11 + 12 + 15 + 15 + 16 + 17 + 17Part A (continued):
18 + 18 + 20 + 20 + 25 = 222. There are 14 classes, so the mean class size is 222/14 ≈ 15.9.
Therefore, the measures of center for Bay Side School are: median = 25, mean ≈ 16.2.
The measures of center for Seaside School are: median = 15, mean ≈ 15.9.
Part B: To calculate the measures of variability, we can find the range and the interquartile range (IQR) for each school.
For Bay Side School, the range is the difference between the largest and smallest class sizes. The largest class size is 25, and the smallest class size is 12, so the range is 25 - 12 = 13.
To find the IQR for Bay Side School, we need to find the first quartile (Q1) and the third quartile (Q3) of the data. From the stem-and-leaf plot, we can see that Q1 is 15 and Q3 is 20. Therefore, the IQR is 20 - 15 = 5.
For Seaside School, the range is the difference between the largest and smallest class sizes. The largest class size is 25, and the smallest class size is 10, so the range is 25 - 10 = 15.
To find the IQRPart B (continued): for Seaside School, we need to find the first quartile (Q1) and the third quartile (Q3) of the data. From the stem-and-leaf plot, we can see that Q1 is 12 and Q3 is 18. Therefore, the IQR is 18 - 12 = 6.
Therefore, the measures of variability for Bay Side School are: range = 13, IQR = 5.
The measures of variability for Seaside School are: range = 15, IQR = 6.
Part C: If you are interested in a smaller class size, Seaside School is a better choice because its measures of center are lower than those of Bay Side School, indicating that its class sizes tend to be smaller on average. Additionally, Seaside School has a smaller range and IQR, indicating less variability in class size. Therefore, there is less chance of encountering very large classes at Seaside School compared to Bay Side School.
In a survey, a soft drink company asks people to name as many brands of soft drinks as they can. Which measure gives the most frequently mentioned brand? a. median b. mode c.mean
Answers
The required measure for the given case is mode. The correct option is (b).
How to find the mean and median for a given sample of data?In order to find the mean, first sum all the values of the data and count the number of data then divide them.
In order to find the median, first check whether the number of data is even or odd. For even number, the median is n/2 th element of the sample and for odd number the median is (n + 1)/2 th element.
The given problem deals with a sample of data.
In order find the correct answer, each option is analysed one by one as follows,
(a) The mean of a sample of data represents a standard value for the whole sample such that the individual values of the data may be more or less than it. but, it does not tell about the number of times a value is repeated.
(b)The median of a given sample can tell the middle most value of data when arranged in ascending order.
(c) The mode of a sample is about the times of occurrence of a single value in the whole sample.
As per the given question, to tell about the most frequently brand mode can be used.
Hence, the statistical measure that measures gives the most frequently mentioned brand is mode.
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The wholesale price for a pillow is $4.50 . A certain department store marks up the wholesale price by 80%. Find the price of the pillow in the department store.
Round your answer to the nearest cent, as necessary.
Answers
Answer:
8.1
Step-by-step explanation:
1.8 times 4.50 is 8.1
3 grams is the same as how many ounces?
Hint: 1g≈0.035oz
Round your answer to the nearest tenth.
Answers
Answer:
0.1
Step-by-step explanation:
Multiple 0.035 times 3 and round it to the tenth
Evaluate the expression when c=12 and d=112.
3(14+c2)+2d
Answers
Answer:
\(\boxed{\boxed{\sf 698}}\)
Step-by-step explanation:
\(\sf 3(14+c^2)+2d\)
\(\longmapsto\sf c=12\)
\(\longmapsto\sf d=112\)
Substitute c with 12, and d with 112:
\(\Box \:\: \sf 3\left(14+12^2\right)+2\times \:112\)
we'll follow the PEMDAS order of operations:
→ Parentheses
→ Exponents
→ Multiplication
→ Division
→ Addition
→ Subtraction
_______________________________
\(\boxed{\sf 1}\) Calculate within the Parentheses:
\(\mapsto \sf \left(14+12^2\right)\)
\(\mapsto \sf 14+144\)
\(\mapsto \sf 158\)
____________________
\(\boxed{\sf 2}\) Multiplication/ Division:
\(\mapsto \sf 3\times \:158+2\times \:112\)
\(\mapsto \sf 474+2\times \:112\)
\(\mapsto \sf 474+224\)
____________________
\(\boxed{\sf 3}\) Addition/ Subtraction:
\(\mapsto \sf 474+224\)
\(\mapsto \sf 698\)
______________________________________
The radius of the earth is 3959 miles. A meteor with a diameter of 750 miles strikes the earth in an unpopulated area. What percent of the earths surface is affected by the meteor strike? Is it a 36% be 0.9% C9% or D3.6%
Answers
Answer:
B. 0.9%
Step-by-step explanation:
If the diameter of the meteor is 750 miles, then its radius is 750/2 = 375 miles
The radius of the earth is 3959 miles
Assuming that both bodies are spherical, their surface are:
meteor's surface: π*r² = π*375² = 441786.467 miles²
Earth's surface: π*3959² = 49240321.1 miles²
If 49240321.1 miles² represents 100% then 441786.467 miles² represents:
49240321.1 miles² / 100% = 441786.467 miles² / x%
x = 441786.467/49240321.1*100
x = 0.9%
Answer:
B) 0.9%
Step-by-step explanation:
PLLLZZZZ HELP!!!!!! I will mark brainliest!!!
Answers
Answer:
4) yes, the rate is 3
5) no
6) yes, the rate is 5
Step-by-step explanation:
Direct variation is y = kx.
4.
First, substitute your values into the equation for direct variation to find K, the rate.
3 = k(1)
3 = k
Now let's see if this holds true.
6 = 3(2)
6 = 6
This looks true, but let's do another one from the table.
9 = 3(3)
9 = 9
And another just to check.
12 = 3(4)
12 = 12
So, #4 is direct variation.
5.
1 = k(2)
1/2 = k
Let's test for all of the other values to be sure.
2 = (1/2)(3)
2 ≠ 1.5
3 = (1/2)(4)
3 ≠ 2
This is not true. #5 is not an example of direct variation.
6.
5 = k(1)
5 = k
Time to check.
10 = 5(2)
10 = 10
Again.
15 = 5(3)
15 = 15
Again.
20 = 5(4)
20 = 20
One last time...
25 = 5(5)
25 = 25
#6 is an example of direct variation.
Please help! It's urgentttt!!!!!! 15 POINTS! BRAINLY TO THE FIRST PERSON WHO ANSWERS CORRECTLY!!
Answers
PLS ANSWER THIS QUESTION- this is 8th grade math
Answers
PLEASE HELP THE ANSWER IS WRONG ON THE SCREEN IM RETAKING A TEST
Answers
Answer: D
Step-by-step explanation:
Do you want explanation?
Which beat explains what determines whether a number is irrational?
Answers
Answer:
The correct answer is Choice D. An irrational number is a number that can be written as a decimal but never terminates or repeats.
A good example of an irrational number is the number pi. We know that it begins as 3.14. However, that is only the beginning. It goes on forever without repeating or terminating.
Step-by-step explanation:
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
The students at Wendy's school voted for a new school color. 720 students voted for purple and the other 2,280 students voted for red. What percentage of the students voted for purple?
Answers
Answer:
12
Step-by-step explanation:
2,280 + 720 = 3,000, so, In total, there are 3,000 students.
Step 1: We make the assumption that 3000 is 100% since it is our output value.
Step 2: We next represent the value we seek with $x$x.
Step 3: From step 1, it follows that $100\%=3000$100%=3000.
Step 4: In the same vein, $x\%=720$x%=720.
Step 5: This gives us a pair of simple equations:
$100\%=3000(1)$100%=3000(1).
$x\%=720(2)$x%=720(2).
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have
$\frac{100\%}{x\%}=\frac{3000}{720}$
100%
x%=
3000
720
Step 7: Taking the inverse (or reciprocal) of both sides yields
$\frac{x\%}{100\%}=\frac{720}{3000}$
x%
100%=
720
3000
$\Rightarrow x=24\%$⇒x=24%
Therefore, $720$720 is $24\%$24% of $3000$3000.
Earn points, answer both questions!
Answers
Answer:
Area of five squares = 1289.09 square units
Perimeter = 194.6 units
Step-by-step explanation:
Area of square and perimeter:
First find the length of each square, then find the area of each square.
To find the area of five squares, add all the area of each square.
Side of square1 = 27 units
\(\sf Side \ of \ square2 = \dfrac{2}{3}*27=2*9 = 18 \ units\\\\Side \ of\ square3= \dfrac{2}{3}*18=2*6=12 \ units\\\\Side \ of \ square4=\dfrac{2}{3}*12=2*4=8 \ units\\\\Side \ of \ square5=\dfrac{2}{3}*8=\dfrac{16}{3}=5.3 \ units\)
Area of square1 = 27*27 = 729 square units
Area of square2 = 18*18 = 324 square units
Area of square3 = 12*12 = 144 square units
Area of square4 = 8*8 = 64 square units
Area of square5 = 5.3*5.3 = 28.09 square units
Area of five squares = 729 + 324 + 144 + 64 +28.09
= 1289.09 square units
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Perimeter of the composite figure = (27 + 27+27+9) + (18+18+6) +(12+12+4) + (8+8+2.7)+ (5.3+5.3+5.3)
= 90 + 42 + 28 + 18.7 + 15.9
= 194.6 units
the perimeter is 194.6 units
Which line fits the data graphed below? A B C None
Answers
Answer:
C
Step-by-step explanation:
the line of C follows the dots
Answer:
C is most likely the correct answer
Can someone help with finding the area of this shape. The answer choices are on the second picture
Answers
Answer:
I think the answer is D
Step-by-step explanation
What function is graphed below?
y = 4 x + 2
y = x + 2
y = 2 x + 2
y = 2 x
Answers
2x represents the slope, and 2 is the y-intercept.
NEED HELP ASAP Triangle JKL was dilated with the origin as the center of dilation to create triangle J'K'L'. The triangle was dilated using a scale factor of 1/2 Which rule represents the dilation applied to triangle J K L to create its image, triangle J′ K′ L′ ?
Answers
Answer:
Step-by-step explanation:
C
Work out the size of angle m.
Answers
Answer:
78+25+61+55+64=283
360-283=77
180+77=257
If you add up all the provided angles you get 283 degrees
The remaining angle to get to 360 is 77 since 360-283=77
Answer: m=77
Hope this helped!
Kenneth graphed a system of equations.
Kenneth says the system has no solution
Do you agree?
Yes or No
Answers
If ABC is a right triangle, and m∠A=40º, what are possible measures for B and C? (I forgot the screenshot so sowy ;w;*
Answers
Answer:
The other possible angles would be 90º (Right tringles always have a 90º angle) and 50º
Step-by-step explanation:
To find the 3rd angle (the 50º one) all tringles angles add up to 180º. Since you already have 40º and 90º
you would subtract those from 180.
180º - 40º - 90º = 50º