Question

help please I will mark brainlist ​

Answer 1

Answer:

1-(i) 2⁷

(ii) 7³

2- 2⁴=16 and 11²=121

3- 3² is greater

4- 40

5-(i) 3⁴ and (i) 10³

6-19683

7- 4*10⁵

10-(i) 1*1*1=1 and (i) 1+1+1=3

Step-by-step explanation:

sorry for rest answers..!!!

Answer 2

Answer:

1. 2⁷

7³

2. 16

121

3. 3² > 2³

4. 40

5. 3⁴

10³

6. (-3)⁹

7. 4 × 10⁵

4.3209 × 10³

8. 12³ or (3³ × 4³)

32a⁵

9. 30721

900315

10. 1

3

Step-by-step explanation:

1.

i) 128 = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 2⁷

ii) 343 = 7 × 7 × 7 = 7³

2. 2⁴ = 2 × 2 × 2 × 2 = 16

11² = 11 × 11 = 121

3. 3² = 3 × 3 = 9 and 2³ = 2 × 2 × 2 = 8

so, 3² > 2³

4. (-5) × (-2)³ = ((-5) × (-2)) × ((-2) × (-2)) = 10 × 4 = 40

(Note: You dont have to group it always we can group it to make the problem easier)

5. i) 3 × 3 × 3 × 3 = 3⁴

ii) 10 × 10 × 10 = 10³

6. We know that (a^m) × a^n = a^(m + n)

so, (-3)⁴ × (-3)⁵ = (-3)⁹

(-3)⁹ = (-19683)

7.

i) 400000 = 4 × 10⁵ (Here the easy way to find is just that add the number of zeros)

ii) 4320.9 = 4.3209 × 10³ (Shift the decimal places after the first digit)

8.

i) (3 × 4)³ = 12³ or (3³ × 4³)

ii) (2a)⁵ = 2⁵ × a⁵ = 32a⁵

9.

i) 3 × 10⁴ = 30000

7 × 10² = 700

2 × 10¹ = 20

10⁰ = 1

Adding we get = 30721

ii) 9 × 10⁵ = 900000

3 × 10² = 300

10¹ = 10

5 × 10⁰ = 5 × 1 = 5

Adding we get = 900315

10.

i) 3⁰ × 7⁰ × 2⁰ = 1 × 1 × 1 = 1

ii) 5⁰ + 3⁰ + 1⁰ = 1 + 1 + 1 = 3

Hope you understood it........All the best