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laila [671]
3 years ago
12

The table shows the scoresof 20 students in a test, work out the mean score

Mathematics
1 answer:
adoni [48]3 years ago
7 0

Answer:

2.7

Step-by-step explanation:

hope you understand if you don't understand tell me I'll try again.

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Solve (6-5x)/10-(2x+1)/5+x/3=2x/15
Ulleksa [173]
Multiply2 * x/15 to 2x/15

multiply both sides by 30 which is the LCM of 10, 5, 3, and 15

expand it

simplify 18 - 15x - 12x - 6 + 10x to 12 - 17x

add 17x to both sides

add 4x + 17x to = 21x

divide both sides by 21

simplify 12/21 to 4/7

now simplify

Answer: x = 4/7.
3 0
3 years ago
I will give brainiest to whoever answers correctly !!
Inga [223]

Answer:

0.50 %

Step-by-step explanation:

= profit/cost x 100%

= 11.95 - 7.95 = 4

= 4/7.95 x 100 %

= 0.50 %

6 0
3 years ago
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The circumference of a circle is 140 cm.<br> What is the radius of the circle?
NikAS [45]

2*22/7*r=140

r=22.27

is the answer

8 0
3 years ago
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Help I don’t understand
Flauer [41]

Answer:

176

Step-by-step explanation:

12x6=72

10x8=80

subtract the 12 with the 8 and get 4 and subtract the 10 with the 4 and get 6;

6x4=24

add it up

24+80+72=176

4 0
3 years ago
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3-i<br>------<br>4+2i<br>I don't understand what I need to do here
Vinvika [58]
The answer is the one that's bettween 3-i and 4+2i is 5x 2i
4 0
3 years ago
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