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pychu [463]
3 years ago
5

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 , and Greta wrote the equation . Which person is correct, and why? Kelly is correct; each person plants more trees than the person before them. Kelly is correct; and . Greta is correct; each person plants 4 more trees than the person before them. Greta is correct; and .
Mathematics
2 answers:
Oduvanchick [21]3 years ago
8 0

<u>Answer:</u> Greta is correct.

<u>Explanation:</u>

Greta is correct sine you can substitute different number of people for each of the values of and y and check that each person will still plant 4 trees.

For example:

4x = 4(1) = 4 trees; and

4 x 5 = 20

but you should follow a certain pattern to increase the value of x, such that every foe every value of x, one person is able to plant 4 trees.

zloy xaker [14]3 years ago
5 0

Answer:

the answer is D

Step-by-step explanation:

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vodomira [7]

the answer for this is D

6 0
3 years ago
2000 people are selected randomly from a certain population and it is found that 389 people in the sample are over 6 feet tall.
Airida [17]

Answer: 0.195

Step-by-step explanation:

given data:

population = 2000 people.

people Who are over 6 feet tall = 389.

Solution:

the point estimate of people over 6feet tall

= no of people over 6 feet tall / total population size

= 389/2000

= 0.195

the point estimate of people over 6 feet tall is 0.195

8 0
3 years ago
Find the area of a regular hexagon if given a side length of 1.9 to the square root of 3.
dalvyx [7]

Answer:

28.137 sq. units.

Step-by-step explanation:

Area of a regular hexagon is

A=\dfrac{3\sqrt{3}}{2}a^2

where, a is the side length.

It is given that the side length of the regular hexagon is 1.9\sqrt{3}.

Substitute a=1.9\sqrt{3} in the above formula.

A=\dfrac{3\sqrt{3}}{2}(1.9\sqrt{3})^2

A=(1.5\sqrt{3})(10.83)

A=16.245\sqrt{3}

A=28.137

Therefore, the area of regular hexagon is 28.137 sq. units.

6 0
3 years ago
The sum of twice a number and three is greater than forty-nine
mestny [16]

<span>
We divide both sides by 2 to isolate x... 
x > 23 
There you go. Any number greater than 23 is a correct answer to your problem. Let's verify by substituting x for 24. 
2(24) + 3 > 49 
48 + 3 > 49 
51 > 49 </span>
5 0
3 years ago
A rectangular prism with a volume of 444 cubic units is filled with cubes with side lengths of \dfrac13
IrinaK [193]

Answer:

108 cubes

Step-by-step explanation:

Lengths of one of the cube s=\dfrac{1}{3}

Volume of a Cube  =s^3

Volume of one of the Cubes =(\dfrac{1}{3})^3=\dfrac{1}{27}

The volume of the rectangular prism is 4 cubic units.

Therefore, to find the number of cubes it takes to fill the prism, we divide the volume of the prism by the volume of the cube.

\text{Volume of Prism/Volume of Cube}=4 \div \dfrac{1}{27}\\=4 X 27 \\=108

It takes 108 cubes to fill the rectangular prism.

8 0
4 years ago
Read 2 more answers
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