Which are you doing divide or mutliplaition ™
Answer:
28
Step-by-step explanation: You need to divide 7 by 1/4. Whenever you divide fractions you keep the first number as it is, change the sign to multiplication and write the reciprocal of the second fraction which is you have to flip the fraction. It is going to be 7 times 4/1. Which is 28/1 which is 28.
Answer:
Step-by-step explanation:
Surface area of cube
Step-by-step explanation:
3²×(3³)² × 3^-8
(3³)² = 3⁶
remember that an exponent of an exponent means to multiply the 2 exponents.
3²×3⁶ = 3⁸
remember that when we multiply the same base number with exponents, we add these exponents.
and then 3⁸×3^‐8 = 3⁰ = 1
3²×(2×3)^-3 / (2^-3)
(2×3)^-3 = 2^-3 × 3^-3
remember that an exponent of a product means that that exponent has to be applied to every factor.
so, 2^-3 / 2^-3 = 1
that leaves us with 3²×3^-3
remember that we add the exponents in such a case.
2 + -3 = -1
so, we get 3^-1 = 1/3
remember that a negative exponent just means 1/...
2^-1 × (2×3)⁴ / (2×3)³
this is now easy.
(2×3)⁴ / (2×3)³ = (2×3)¹ = 2×3
and then
2^-1 × 2¹×3¹ = 2⁰×3¹ = 1×3 = 3
2⁵×3⁵×6^-5 = (2×3)⁵ × 6^-5 = 6⁵×6^-5 = 6⁰ = 1
2³×(2×3)^-1 / 2²
2³/2² = 2¹ = 2
2¹×(2×3)^-1 = 2¹×2^-1 × 3^-1 = 2⁰×3^-1 = 1×3^-1 = 3^-1 = 1/3
