tmara is making a medium length necklace. write an expression that shows how nuch it will cost tamara for the chain,pendant,and b beads that cost $0.25 each.Then find the total cost of the necklace if tamara uses 30 beads.
Answer:
1/4(n), $7.50
Step-by-step explanation:
Expanded: cost = 0.25 * chains + 0.25 * pendants + 0.25 * beads
Simplified: c = (1/4)(total number of items)
Expression only: 1/4n where n = # chains + # pendants + # beads purchased
Total cost of 30 beads = 1/4(30) = 7.5 = $7.50
1. Forty randomly-selected members of a high school music program were asked to report the number of hours they spend practicing each week. If you were to compute the mean number of hours, would you answer be a parameter or a statistic? Explain.
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Explanation:
The fact that we have the phrasing "randomly-selected" in there is a big clue that we are working with a sample, and not a population. If 40 people represented the population, then we wouldn't be randomly selecting anyone. Everyone would be surveyed. No random process needed. We don't need to worry about the order of those surveyed.
However, we are applying a random selection process to form this sample. A statistic is some value that measures a sample. For instance, xbar is the sample mean which is a sample statistic. The xbar value estimates mu, which is a greek letter. Mu is the population mean and a population parameter.
To remember the difference between the two terms parameter and statistic, one useful memory trick is to think of it like this:
Statistic and sample both start with sPopulation and parameter both start with pAs the name "statistics" implies, it is the study of how to estimate a population based on a sample. After gathering the sample, we compute a statistic, which in turn estimates a parameter. So that explains why your math course and textbook has that label.
I need help with this please!!!
Answer:
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A salesman earns 3% commission for everything he sells. Yesterday, he sold a large screen television for $2,400 and a video game system for $500. How much money did the salesperson make on commission?
Multiply. Write the answer as a mixed number in simplest form.
1 3/4 x 2 3/8 =
Answer:
1 5/16
Step-by-step explanation:
change to improper fractiom
reduce with the GCF
multipy
Is -6 greater than -5
Answer:
-5 is greater than -6
Step-by-step explanation:
here is a drawing.
please help! i'm not really good at these, thank u sm if u help!
Answer:
Correct: a, b, c, d, f, g, h, i, l
Incorrect: e, j, k
Step-by-step explanation:
a. -120=60(-2) {insert x and y into the equation and see if it works} Correct
b. 60 is being multiplied by hours, so it is the mph Correct
c. 60 is always the one being multiplied, so it's the constant Correct
d. 210=60(3.5) {insert 3.5 as x [cause hours] and see if it equals 210 [it does]} Correct
e. y is the dependent variable, and it represent miles driven Incorrect
f. Direct variation equation is y=kx {in the equation, k=60} Correct
g. x is the independent variable, and it represents the hours driven Correct
h. The x and the y are proportional Correct
i. y is the dependent variable, and it represent miles driven Correct
j. y is the dependent variable, and it represent miles driven Incorrect
k. Rise=y Run=x The first point would be (1,60) {rise=60 run=1} Incorrect
l. (0,0) is a solution, and it is also the y-intercept Correct
(hope this helps :P)
What is the solution of each equation 4z=20: z=5 z=2 z=7 z=6
Answer:
43/6=z
Step-by-step explanation:
1. The sum of two numbers is 140 and their difference is 20. What are the two numbers?
Answer:
Step-by-step explanation:
Find the median and mean of the data. Which reflects the best measure of the center? 23, 27, 60, 154, 17, 15, 28
Answer:
Mean=16.75
Median=15.5
Mode=13
Range=16
Step-by-step explanation:
bright and Ernest saved money in the ratio 3:5if Ernest saved $10 how much did bright save
Answer:
Bright saved 6 dollars.
Answer:
$6
Step-by-step explanation:
10 divide 5 is 2 so
3 multiply 2 is 6 so he saved 6 dollars
3(12+x)=90 what does x equal
Answer:
36+x=90
90-36=x
x=54
Step-by-step explanation:
Answer:
3(12+x)=90
12+x=60
x=48
Let me know if this helps!
PLEASE HELP THESE ARE MY ONLY POINT ;-; PLEASE
Answer:
a) max 12000 , min 0
b) no solution
c) pricing based on profit
Step-by-step explanation:
a) look at the parabola
b) there is more than one x (0)
c) the y intercepts represent his profit based on how much he priced the items at
Which of the following is equal to the expression listed below?
(18 × 24) - (18 × 9)
a.(24 - 18) × (18 - 9)
b.24 × (18 - 9)
c.18 × (24 - 9)
d.18 - (24 × 9)
Answer:
C
Step-by-step explanation:
good luck. hope this helps
Find the circumference of the object Use 3.14 or 22 for for T. Round to the nearest hundredth if necessary 11.4 in. The circumference is about inches
Answer:
35.80
Step-by-step explanation:
[tex]3.14 \times 11.4 = 35.796[/tex]
Simplify & Round
35.796 ---> 35.80
Awnser = 35.80
Tyler is designing a banner that will welcome people to a festival. The design for the banner has an
area of 1.5 square feet. The actual banner will be a dilation of the design by a factor of 5. What will
the area of the actual banner be?
Answer:
7.5 sq ft
Step-by-step explanation:
1.5*5=7.5
The design is 1/5 of the actual size, so you just multiply by 5 to get the real size.
32x45
Please !!!!!!!
Answer:
The answer is 1,440.( One thousand four hundred and fourty.)
Answer:
Your answer is 1,440
Step-by-step explanation:
Find the length ,of a rectangular prism if the volume is 70 m,the width is 2 m , and the height is 7 m.
Answer:
A rectangular prism is the same as a cuboid.
Volume of a cuboid =LxWxH
70=Lx2x7
70=14L
L=70/14
L=5m
Which equation represents a line that is perpendicular to the y-axis?
SEE PIC
Answer: c
Step-by-step explanation:
y = -8
Nicholas is buying shirts for his baseball team. He will pay $9.50 for each shirt plus a
one-time fee of $22.50 for the design. Which equation can be used to find y, the total cost to buy x shirts?
A. y = 9.5x + 22.5
B. y = 22.5x + 9.5
C. y = 9.5x - 22.5
D. y = 22.5x - 9.5
Answer:
A
Step-by-step explanation:
cause x shirts times 9.5(the price of shirt)+ one time fee
Need help ASAP please--about estimate. which answer is correct. Please give me an opinion. Three students were asked to use estimation strategies to find a reasonable solution to this question: Ricky had 26 stickers before buying 7 from the store. Then he gave 8 to his sister. Estimate how many stickers he has left. From the choices below, select the student with the most reasonable solution.
a) Student A: Ricky has around 45 stickers left. Round 26 stickers to 40, 7 bought to 10, and 8 given to 5. Add 40 + 10 to get 50. Then subtract 50 − 5 to get the estimated answer of 45.
b) Student B: Ricky has around 30 stickers left. Estimate the sum of 6 from the 26 stickers plus 7 bought to be about 20. Add the 20 to the leftover 20 to get 40. Round 8 given to 10. Then subtract 40 − 10 to get the estimated answer of 30.
c) Student C: Ricky has around 10 stickers left. Estimate the sum of 6 from the 26 stickers plus 7 bought to be about 10. Add the 10 to the leftover 10 to get 20. Round 8 given to 10. Then subtract 20 − 10 to get the estimated answer of 10.
Write an equation of line that crosses the y- axis at -4 and has a slope 1/2
Answer:
y=1/2x-4
Step-by-step explanation:
the answer is y=1/2x-4
i need help asappp!!
Answer:
168
Multiply 8 times 3 times 7
6⁴
A. 10
B. 24
C. 4⁶
D. 6•6•6•6
what are ratios and what do they do and what is their purpose
Step-by-step explanation:
Ratios measure the relationship between two or more components of financial statements. They are used most effectively when results over several periods are compared. This allows you to follow your company’s performance over time and uncover signs of trouble.
Write this as a fraction:
75 cm
Answer:
1m = 100cm
75cm/100cm = 75/100 = 3/4
75 cm is 3/4 of meter.
Step-by-step explanation:
Justine answered 33 questions correctly on a 75−question test. Enter this amount as a fraction in simplest form, decimal, and percent.
As a Fraction
As a Decimal
As a Percent
Answer: 33/ 75, 0.44 & 44%
Step-by-step explanation: hope this is helpful
Read and choose the correct words for the blank that match the image. (1 point) A cook using pepper on food cooking in a pan Me gusta ________ en la comida.
A) la papa
B) el tomate
C) la pimienta
D) la carne
Answer:
C) la pimienta
Step-by-step explanation:
Answer:
C) la pimienta
Step-by-step explanation:
because is means pepper in spanish
bret designs a page in a newspaper the page has a length of 36cm. an advert will take of the 1/3 length of the page. what is the length of the advert.
Answer:
12 cm
Step-by-step explanation:
36 x 1/3 = 12 cm
What is the total surface area?
Answer:
4352 i think
Step-by-step explanation: