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soldier1979 [14.2K]
3 years ago
8

The teacher kept track of how long it took students to finish a test. After 20 minutes, 3 students had finished the test.

Mathematics
2 answers:
Olin [163]3 years ago
8 0
9 students finished the test 

hammer [34]3 years ago
7 0
Answer: D. 10 students finished the test.
How I got that:
20 x 4. Which got me 80. (You had to get after 70)
9.5 students finished but round that up to 10.
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Will give brainly,5 stars,and thanks
Irina-Kira [14]

Answer:

Give the person above me brainliest

Step-by-step explanation:

6 0
3 years ago
Write two different pairs of decimals whose sums are 8.69. one pair should involve regrouping.
Komok [63]
No regrouping: 4.34 + 4.35
Regrouping (carrying): 4.93 + 3.76
6 0
3 years ago
Read 2 more answers
Determine the first four terms of the sequence in which the nth term is...
Anon25 [30]

Answer:

1/5, 1/6, 1/7, 1/8

Step-by-step explanation:

The formula for the sequence is (n+3)!/ (n+4)!

The first terms uses n=1

a1 = (1+3)!/ (1+4)! = 4!/5! = (4*3*2*1)/(5*4*3*2*1) = 1/5


The first terms uses n=2

a2 = (2+3)!/ (2+4)! = 5!/6! = (5*4*3*2*1)/(6*5*4*3*2*1) = 1/6


The first terms uses n=3

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The first terms uses n=4

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7 0
3 years ago
Read 2 more answers
I NEED HELP ASAP
SVEN [57.7K]

Alright, lets get started.

If the polygon measures 45 degree exterior angle and we are asked to find number of sides, there is a formula for that.

\frac{360}{n} = value of exterior angle

Where n is number of sides of ploygon

\frac{360}{n}  = 45

Multiplying n into both sides

\frac{360}{n} * n = 45 n

360 = 45 n

Now divide 45 in both sides

\frac{360}{45}  = \frac{45n}{n}  = n = 8

n = 8

Means number of sides of polygon is 8, hence its Octagon. Answer

Now we have given 45 exterior angle hence interior angle would be

180 - 45 = 135°

So, sum of all interior angles would be = number of sides * interior angle

sum of all interior angles would be = 8 * 135 = 1080

Hence sum of all interior angles would be 1080°. Answer

Hope it will help :)

7 0
4 years ago
PLEASE HELP ASAP PSLLLSLSL look at photo
shtirl [24]

Answer:

Last one

Step-by-step explanation:

Negative one times 6r is -6r and then that eliminates two of the four. the rest is common sense tbh.... but it is the last one. Hope this helps

3 0
3 years ago
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