Question

solve it please ?????​

Answer 1

Answer:

Answer 1) 6 students

Step-by-step explanation:

Because 70% of 20 will be 14.

So here we have the total number of students and the students who are good in Mathematics.

For finding the no. of students that are not good in Mathematics-

20-14= 6

Answer- 6 students

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Answer 2

Step-by-step explanation:

1 . number of students not good in mathematics = 0.30 * 20

= 6

2).

2x - 56 = 12

2x = 56 + 12

2x = 68

X = 34.

3).

$100 {x}^{2} {y}^{4} \times 5 {x}^{10} {y}^{9} = 500 {x}^{12} {y}^{13} .$

4)

.

${k}^{p - q} {k}^{q - r} {k}^{r - p} = {k}^{0} \\ \\ = 1.$

5)

. each contributed

$\frac{1000}{5} = 200.$