1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
astraxan [27]
3 years ago
8

Kelly and Greta are asked to write an equation for the scenario below. "One person was able to plant 4 trees in the same amount

of time that 5 people working together were able to plant 20 trees." The girls agree that x represents the number of people working and y represents the number of trees planted. Kelly wrote the equation y = one-fourth x, and Greta wrote the equation y = 4 x. Which person is correct, and why? Kelly is correct; each person plants One-fourth more trees than the person before them. Kelly is correct; 1 = one-fourth times 4 and 5 = one-fourth times 20. Greta is correct; each person plants 4 more trees than the person before them. Greta is correct; 4 = 4 times 1 and 20 = 4 times 5.
Mathematics
2 answers:
vekshin13 years ago
8 0

Answer:

d is correct non edge 2021

Step-by-step explanation:

Alina [70]3 years ago
6 0

Answer:

y=\dfrac{1}{4}x

Kelly is correct.

Step-by-step explanation:

One person is able to plant 4 trees

Let x be the number of people

y be the number of trees

The situation is represented by

1x=4y\\\Rightarrow y=\dfrac{1}{4}x

5 people are able to plant 20 trees

5x=5(4y)\\\Rightarrow 5x=20y\\\Rightarrow y=\dfrac{5x}{20}\\\Rightarrow y=\dfrac{1}{4}x

So, the situation is represented by y=\dfrac{1}{4}x

Hence, Kelly is correct.

You might be interested in
A and b are natural numbers. The diameter of cell a is 2.3 , and the diameter of cell b is 2.3 .
Pani-rosa [81]

After clarification we see the respective diameters are

A = 2.3 \times 10^{-a}

B = 2.3 \times 10^{-b}

We're asked about the ratio

A:B =  2.3 \times 10^{-a} :  2.3 \times 10^{-b} = 10^{-a} : 10^{-b} = 10^b : 10^a = 10^{b-a} : 1

Now we can go through the choices.

A. If a = 4 and b = 6, then cell a is 100 times greater than cell b.

A:B=10^{6-4}:1 = 100:1

It would be more proper to say the diameter of cell A is 100 times the diameter of cell B, but yes, this is TRUE.

B. If a = 4 and b = 6, then cell b is 100 times greater than cell a.

FALSE. 10 to the minus 4 is 100 times bigger than 10 to the minus 6, so a is bigger.

C. If a = 4 and b = 6, then cell a is 2 times greater than cell b.

FALSE. We already calculated its 100 times bigger.

D. If a = 4 and b = 6, then cell b is 2 times greater than cell a.

FALSE.


8 0
3 years ago
Read 2 more answers
Andy purchased a pair of shoes for $40. They had been discounted 25%. What was the original price of the shoes
natali 33 [55]

Answer:160


Step-by-step explanation:first I did 40*100=4000 then I divide by 25 so I got 160


4 0
3 years ago
Write the polynomial as a product: p^2q+r^2–pqr–pr<br> Thanks so much! Love you all who help!
Anarel [89]
Factor the equation so... 
(r^2-pr) and (p^2q-pqr)

Factor out (r^2-pr) = r(r-p)
Factor out (p^2q-pqr) = pq(p-r)

Add a negative to r(r-p) to make it -r(p-r)

(pq-r)(p-r) is the answer...  I'm sorry I can't explain things well, but I tried.
5 0
3 years ago
If two fair dice are rolled, what’s the probability that the product of the
Oksanka [162]

Answer:

4/1. ( not so sure tho)

Step-by-step explanation:

=[(6/6)×(6/6)] + [(5/6)×(6/6)] + [(6/6)×(5/6)]

=(36/36) + (30/36) + (30/36)

=(taking LCM) 96/36

=4/1.

hope this helps

8 0
3 years ago
Lin correctly compares the values of the digits in 644.66. Select the comparison Lin could have made.
katrin2010 [14]

Answer:

D. The value of the hundreds digit is 10,000 times the value of the hundredths digit.

Step-by-step explanation:

all of the other options are incorrect

0.01 x 10,000 = 100

4 0
2 years ago
Read 2 more answers
Other questions:
  • Grant is painting a rectangular board that has a width of 1/3 foot. He has enough paint to cover 3 square feet. If he is able to
    8·1 answer
  • Find the measure of angles 1–12 in the complex figure. Explain how you found each angle measure.
    9·1 answer
  • Evaluate the expression 3÷1 1/5+1/2
    11·1 answer
  • Eric has recorded rainfall data for 90 days so far if this is 1/6 of the data needed for his science fair project for how many t
    8·1 answer
  • Solve for x √2x=4√5<br> A. X=5√2<br> B. X=8√5<br> C. X=10<br> D. X=40
    5·1 answer
  • Help me solve 4x - 3 &lt; 7
    8·2 answers
  • If the product of x^2a-1/y^3b+4 and x^7b-4/y^10-a is x^24/y^19 find the value of a and b
    13·1 answer
  • Find the product of the binomial: <br> (x-1)(x+4)(x-3)
    8·1 answer
  • Find the slope of the line<br> through the points (-2, 6) and (4, 12)?
    6·1 answer
  • Find the slope of the line
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!