Answer:
Variation equation: y = k/√x
constant of variation: 200
Variation Equation by plugging the value of k: y = 200/√x
Step-by-step explanation:
If y varies inversely with the SQUARE ROOT of x, then;
y = k/√x
If x = 4, y = 100.
100 = k/√4
100 = k/2
200 = k
k = 200
Substitute into the expression
y = k/√x
y = 200/√x
a clothing store sells t-shirts,t,for $8 a shirt, and shorts,s,for $12 each. the store earned $180 revenue last month.the store sold three times as many t-shirts as shorts. using the method of substitution, how many t-shirts and shorts did did the store sell?
Answer:
Let x be the variable for a t-shirt for $8.
Let y be the variable for shorts for $12.
Let z be the variable for the hats that cost $10 each.
We have the expression 1 below:
$464 = $8x + $12y + $10z
other expressions:
3z = x
2z =y
By substitution we can solve each variable:
464 = 8(3z) + 12(2z) + 10z
464 = 24z +24z +10z
464 = 58z
z = 8
Solve for x andy:
3z=x
3*8 = 24=x
2z=y
2*8 = 16 = y
The t-shirts are 24 pieces, the shorts are 16 pieces and hats are 8 pieces.
Step-by-step explanation:
Mariner Middle School has 550 students the height of each student is measured and recorded at the beginning of the year . A school health class organizes the raw data into 6 equal height intervals would a dot plot
Answer:
C) A histogram because the class organizes the data into different ranges or intervals.
Step-by-step explanation:
A histogram is a graphical representation of numerical data. It is an approximate approach that groups a set of data into ranges on the x axis and having their match frequencies on the y axis.
A histogram makes it possible to represent a large amount of data and frequency in just one graph because of the interval/range option.
Because Mariner Middle school has a large number of students (550) and their height organized into equal intervals, the histogram is the best option.
what is 513 + _ + 130 = 764? what is the missing number and can u pls do a explantation
Answer:
121
Step-by-step explanation:
The missing number is 121. I got this by doing 764-130-513=121. You would do this because you are trying to find the number that would allow 130 and 513 to add up to 764.
Another way to look at this problem is 513+130= 643
764-643=121
In conclusion, 513+121+130=764
Answer:
the answer will be 121
Step-by-step explanation:
because 513 + 130= 643 then 121 + 643 = 764
i need help with this problem x^2+2x-36=2x
HELP 10 mins left HELP HELP
The graph shows the time spent by students A through H on their homework assignments. Which student spent the least amount of time per assignment
A) a
B) d
C) g
D) h
Answer:
Student H
Step-by-step explanation:
He did the most amout of assiments in the least amout of time
Answer:
Student G
Step-by-step explanation:
They did 7 assignments in 8 hours, while student B did 3 in 8 hours
I think
I need help on these problems because I don’t really get it
Charlotte is making 20 flower bouquets 4/5 of the bouquet are daisies and the rest are tulips how many bouquets are tulips
Answer:
4 bouquets
Step-by-step explanation:
5/5 = 20 flower bouquets.
Find out how much flower bouquets there are when it's 1/5.
5/5 = 20
1/5 = 20 ÷ 5 = 4
Since tulips are 1/5 as 5/5 - 4/5 = 1/5, 4 bouquets are tulips.
Which describes money that is received from a sale of goods or services?
O A. Benefit
O B. Cost
C. Revenue
O
D. Asset
SUBMIT
Algebraic expression for 2x$7
Answer:
x=3.5
Step-by-step explanation:
Seven divided by Two equals three, and a half.
Answer:14
Step-by-step explanation:do 2*7=14
We have calculated a confidence interval based upon a sample of n = 200. Now we want to get a better estimate W with a margin of error only one fifth as large. We need a new sample with n at least
Answer:
::::::::::::::::::::
40
Steve goes to school 350 miles from home. Driving home one weekend, he travels 70 mph for the first 140 miles, and then slows to 30 mph for 30 miles of a construction zone. He drives the last 180 miles at 60 mph. How long did it take Steve to get home?
A. 2 hr.
B. 4 hr.
C. 6 hr.
D. 8 hr.
Answer:
Its C i did the quiz
Step-by-step explanation:
Blackcap birds (Sylvia atricapilla) migrate out of Germany before wintertime. Prior to the 1960s, all members of a particular blackcap population flew to Spain, which had an abundant natural food source. Now, some members of the same blackcap population fly to the United Kingdom, where food placed in feeders by humans is abundant. The blackcaps return to the same forests in Germany to nest during the breeding season.
Some blackcaps that migrate to the United Kingdom have become distinguishable by certain physical and behavioral traits from blackcaps that migrate to Spain. Which of the following best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter?
A- The blackcaps that migrate to Spain will selectively mate with the blackcaps that migrate to the United Kingdom, resulting in increased genetic variation in the blackcap population.
B- The blackcaps that migrate to the United Kingdom will become reproductively isolated from the blackcaps that migrate to Spain, resulting in speciation in the blackcap population.
C- The blackcaps in Spain and the United Kingdom will migrate to other geographical locations in search of potential mating partners, resulting in a smaller blackcap population in Germany.
D- The blackcaps will begin nesting at their wintering sites in Spain or the United Kingdom, resulting in a larger blackcap population migrating back to Germany after the breeding season has ended.
Answer:
D- The blackcaps will begin nesting at their wintering sites in Spain or the United Kingdom, resulting in a larger blackcap population migrating back to Germany after the breeding season has ended.
Step-by-step explanation:
By the inhabitants of Spain and the United Kingdom placing feeders out for the blackcaps, the birds in their nesting sites during the winter will have food to eat, meaning a bigger population of the Blackcaps when they return to their main home in Germany.
This best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter.
What transformation has changed the parent function f(x) = (.5)* to its new
appearance shown in the graph below? (1 point)
Answer:
Vertical compression by a factor of ¼Step-by-step explanation:
[Transformed] f(x) = ¼(.5)ˣ
[Original] f(x) = (.5)ˣ
____________________
I determined this transformation by comparing the notable points on the graph.
When x = -2 for the original function f(x), y = 4.
For this transformed graph y = 1 instead of 4.
Therefore y is scaled by ¼, and so that is the vertical compression.
In a manufacturing process, the assembly line speed (feet per minute) is believed to affect the number of defective parts found during the inspection process. Data (File 3) are collected on the number of defective parts for a variety of line speeds. Develop a linear regression equation that can be used to predict the number of defective parts given the line speed.
Line Speed Number of Defective Parts Found
20 21
20 19
40 15
30 16
60 14
40 17
Required:
a. Develop a scatter chart with line speed as the independent variable. What does the chart indicate about the relationship between line speed and the number of defective parts found?
b. Use the data to develop an estimated regression equation that could be used to predict the number of defective parts found, given the line speed. What is the estimated regression model?
c. Test whether each of the regression parameters βo and β1 is equal to zero at 0.01 level of significance. What are the correct interpretations of the estimated regression parameters?
d. How much of the variation in the number of defective parts found for the sample data does the model you estimated in part (b) explain?
Answer:
Jaime foxcgvxccvyyvytctvtvffddrgfgqvrctcrgctgtgtgygyg goku is the site
BRAINLIEST FOR CORRECT ANSWER ASAP PLEASE
Answer:
he is correct because you add the exponents and then multiply 3 by itself that many times
Given the equation y = 3x + 2 , what is the value of x when y = 8? A:2 B:4 C:6 D:9
Answer:
a
Step-by-step explanation:
Solve, using a proportion. If Joe travels 434 miles in 7 hours, how far will he travel in 10 hours at the same speed? miles Enter
Answer:
Step-by-step explana
Answer:
Step-by-step explanation:
What is the answer
What is the percent of decrease for a t.v. that went from $200 to $125. Round to your nearest percent.
Answer:69+69=420
Step-by-step explanation:h
Find the equivalent measure of -110 .
Answer:
110
Step-by-step explanation:
What’s the answer to this, help plzzzzz
Solve the inequality: x^6 - 64 > 0
Please help ASAP!!! Thank you!!!
Step-by-step explanation:
Step-by-step explanation: Here's your solution
Step-by-step explanation: Here's your solution=> x^2 - 64 > 0
Step-by-step explanation: Here's your solution=> x^2 - 64 > 0 => x^2 > 64
Step-by-step explanation: Here's your solution=> x^2 - 64 > 0 => x^2 > 64 => x = 6√64
=. x = 2
hope it helps
Question 8 of 10 In the polynomial below, what number should replace the question mark to produce a difference of squares? X2 + ? x-25 А. 0 B. 25 C. 10 D. 5 SUBNET
Answer:
A) The number should be 0
Step-by-step explanation:
The differences of squares formula is x²-a²=(x+a)(x-a)
If we expand (x+a)(x-a), we see that it's x²-ax+ax-a² where -ax+ax=0 since the coefficients cancel out. Therefore, option A is correct.
What is 24 1/2 - 9 7/8?
Answer:
the answer is 12 I hope this answer helps you
The graph of g(x)=6+log3x is the graph of f(x)=log3x shifted...
Answer: graph is shifted 6 units upward, in positive y direction
Step-by-step explanation: 6 is added to every value of log(3x) .
which line has a slope of -1/2?
A.) line d
B.) line c
C.) line b
D.) line a
Answer:
C) line d
Step-by-step explanation:
Line D’s slope is -1/2, so C is the correct answer.
A rectangular prism is shown.
What is the volume, in cubic inches, of this rectangular prisim
Answer:
Step-by-step explanation:
104 cubed , find the value of each side length x width x height
A scale drawing used for the model of a building is 1 inch = 150 feet. How tall is the building if the scale model is 6 inches tall?
Answer:
900
Step-by-step explanation:
1 inch/150 feet x 6 inch/x feet
cross multiply
1x=900
Explain how to find the mean using the first model.
Answer:
Im not sure if this helps but the Mean is when you add all of the number together.
Step-by-step explanation:
on the question your doing is 1 to 10.
you add 1+2+3+4+5+6+7+8+9+10=55
your mean would be 55
find the value of x
pls help me!!
Answer:
[tex]x = 36[/tex]
Step-by-step explanation:
[tex]3x + x + x = 180[/tex]
[tex]5x = 180[/tex]
[tex]x = 36[/tex]
Find the missing term in the equation
Answer:
6x
Step-by-step explanation:
4x² - 8x + 8 - x² + 2x - 4 - 3x² + 6x = 4