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QveST [7]
2 years ago
14

Working together, Karen and Darren can mow their yard in 40 minutes if they each have a mower and mow at the same time. If Karen

could mow the entire yard by herself in 60 minutes, how long would Darren take to mow the yard working by himself?
Mathematics
1 answer:
Nataly [62]2 years ago
8 0

Answer:

Step-by-step explanation:

Answer:

120mins

Step-by-step explanation:

Karen mows at 60mins, 1 peice of land

Let Darren mows that 1 peice of land at Xmins

The rate at which Karen mows the land would be 1/60 [takes 60mins for 1 piece]

The rate at which Darren mows the land would be 1/x

The average rate working together on one peice of land will be

the combined time

(1/60) +(1/X) = 1/40

[(1/60) + (1/X)]x40 =1 yard

1/X = 1/40 -1/60=(3-2) /120 =1/120

1/X = 1/120

X=120mins

Darren's takes 120mins

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7/10 of a circle is how many degrees
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So it would be 252 degrees.
6 0
3 years ago
Henry is taking a medicine for a common cold. The table below shows the amount of medicine f(t), in mg, that was present in Henr
Elden [556K]
Geometric sequence general form: a * r^n
For Greg, we are given the elimination of the medicine as a geometric nth term equation:
200 * (0.88)^t
The amount of medicine starts at 200 mg and every hour, decreases by 12%;
To compare the decrease in medicine in the body between the two, it is useful to get them in a common form;
So, using the data provided for Henry, we will also attempt to find a geometric nth term equation that will work if we can:
As a geometric sequence, the first term would be a and the second term would be ar where r = multiplier;
If we divide the second term by the first term, we will therefore get r, which is 0.94 for Henry;
We can check that the data for Henry can be represented as a geometric sequence by using the multiplier (r) to see if we can generate the third value of the data;
We do this like so:
282 * (0.94)^2 = 249.18 (correct to 2 d.p)
We can tell that the data for Henry is also a geometric sequence.
So now, we just look at the multiplier for Henry and we find that every hour, the medicine decreases by 6%, half of the rate of decrease for Greg.

The answer is therefore that <span>Henry's body eliminated the antibiotic at half of the rate at which Greg's body eliminated the antibiotic.</span>
3 0
3 years ago
Read 2 more answers
What is the least common multiple of 24, 16, and 32?​
notsponge [240]

Answer: the LCM is 96

Step-by-step explanation: looked it up

7 0
3 years ago
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What is the percent of increase from 40.6 to 81.2?
crimeas [40]

Answer:

50?

Step-by-step explanation:

Pls, choose me as brainliest!

If I'm right, if not don't pick me

6 0
2 years ago
Question 10 of 33
Eva8 [605]

A tessellation that uses only one type of regular polygon.

<h3>What is Polygon?</h3>

The definition of a polygon is given as a closed two-dimensional figure with three or more straight lines.

When we cover a surface with a pattern of a flat geometric shapes such that there should have no overlaps or gaps, then the surface is called a tessellation.

A regular tessellation is tessellation made up by using only one type of regular polygon. These are made up of entirely congruent regular polygons all that joining vertex to vertex.

Hence, A is the correct option.

Learn more about Polygon from:

brainly.com/question/10441863

#SPJ1

5 0
2 years ago
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