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dusya [7]
3 years ago
12

Assuming she worked at a constant rate, how many rows had been completed before Elena started working?

Mathematics
2 answers:
tatyana61 [14]3 years ago
5 0

The answer is 12 :)

Andru [333]3 years ago
3 0

Answer:

12 is the answer :)

Step-by-step explanation:

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A student pulls a box of mass 5 kg with a force of
klemol [59]

Answer:

50j

Step-by-step explanation:

workdone = force x distance

workdone = 20x2.5

50j

7 0
3 years ago
Multiple samples of students were asked four questions, with the sampling variability of their answers to question 4 being the h
iogann1982 [59]
The variability measures the closeness of the individual data provided. So, the most reliable sampling is the one with the lowest variability. 

For this case, the question with the lowest sampling variability is question 3. Therefore, we can conclude that the answers to which of the questions are most reliable is question 3. 
4 0
3 years ago
Relatively Simple Math, pls lend a hand. 50 points and Brainliest
baherus [9]

B is the correct answer ,,,

4 0
2 years ago
Jack is 13 years younger than his older brother, Tyler. Their Dad is twice Tyler's age. The sum of their ages now is 91. Find Ja
grin007 [14]

Answer:

13 years old

Step-by-step explanation:

So to solve this we use a system of equations. Let's use "j" to represent Jack, "t" to represent Tyler, and "d" to represent the dad. Set the system up and it will look something like this:

j = t - 13 (Jack is 13 years younger than Tyler)

d = 2t (Dad is twice Tyler's age)

d + j + t = 91 (The sum of the ages is 91)

And then solve, I solved by isolating the "j" variable on the last equation, giving us j = 91 - t - d, then plugged that into the first equation, giving us 91 - t - d = t - 13, and got d = 104 - 2t. Then I plug that into d = 2t, giving us 104 - 2t = 2t, and solve for t. T is 26, meaning Tyler is 26 years old, and then I just subtract 13 from that, giving us 13 years old.

And finally, I obviously checked my answer, because now we know dad is 52, and I got 91.

5 0
3 years ago
What is the slope of the line passing through the points (-3, 4) and (2, - 1)?
dimaraw [331]

Answer:

slope = -1 or -x

Step-by-step explanation:

Do y2-y1/x2-x1

Plug in

-1 - 4/ 2 - -3 = -5/5

(Simplify)

-1 so the slope is

-1 or -x

If you want to find the equation use one of the points you have.

4 = -1(-3) + b

4 = 3 + b (subtract 3 on each side)

1 = b

y = -1x + 1 is the equation

6 0
3 years ago
Read 2 more answers
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