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vampirchik [111]
3 years ago
12

The effect of the time of day a science class is taught on test scores is being

Mathematics
2 answers:
Simora [160]3 years ago
5 0

If you have answer choices that would be helpful.

If not I would assume that it means that giving every student the same test is an example of a controlled variable.

s344n2d4d5 [400]3 years ago
4 0

Answer:

Amount of homework given

Step-by-step explanation:

Correct!

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a figure was rotated around a vertical line segment resulting in the object below. which of the figues was rotated
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the first term of an arithmetic sequence is 10 and the sum of the first five terms is 250,find the sequence​
Crazy boy [7]

Answer:

The  sequence  is:

10, 30, 50, 70, 90.....................

Step-by-step explanation:

We have,

First term (a) = 10

Common difference (d) = ?

Sum of first 5 terms (S_{5}) = 250

or, \frac{n}{2} [{2a+(n-1)d}] = 250

or, \frac{5}{2} [2*10 + 4d]=250

or, \frac{5}{2} * 4[5+d]=250

or, 10(5 + d) =250

or, 5 + d = 25

∴ d = 20

Now,

2nd term = a + d = 10 + 20 = 30

3rd term = a + 2d = 10 + 2*20 = 10 + 40 = 50

4th term = a + 3d = 10 + 3*20 = 10 + 60 = 70

5th term = a + 4d = 10 + 4*20 = 10 + 80 = 90

8 0
3 years ago
Use the quadratic formula to find both solutions to the quadratic equation
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Step-by-step explanation:

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Find the area of the shaded region.
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