Answer:
it should be y=9x.
Step-by-step explanation:
Because the money side is multiplying by 9.
Answer:
BE = 72 cm
Step-by-step explanation:
(BPT Theorem)
![\frac{20}{5} = \frac{BE}{18} \\](https://tex.z-dn.net/?f=%5Cfrac%7B20%7D%7B5%7D%20%3D%20%5Cfrac%7BBE%7D%7B18%7D%20%5C%5C)
⇒ 4 = ![\frac{BE}{18}](https://tex.z-dn.net/?f=%5Cfrac%7BBE%7D%7B18%7D)
⇒BE = 18 × 4
∴ BE = 72 cm
Hope this helps...
Please mark as Brainliest!!
I believe 90 but i can be wrong
Answer:
1. (3x²y³z)²=9x⁴y⁶z²
2. (2m³n⁻⁴)³=8m⁹n⁻¹²
Step-by-step explanation:
Both questions require knowledge of two rules of indices/powers:
(xy)ᵃ=xᵃyᵃ (when numbers multiplied by each other are put to a power, that is equal to the product of each number to that power)
(xᵃ)ᵇ=xᵃᵇ (when a number to a power is put to another power, that is equal to the number to the power of the product of the powers)
1.
(3x²y³z)²
=(3²)(x²)²(y³)²(z²)
=(9)(x²⁽²⁾)(y³⁽²⁾)(z²)
=9x⁴y⁶z²
2.
(2m³n⁻⁴)³
=(2³)(m³)³(n⁻⁴)³
=(8)(m³⁽³⁾)(n⁻⁴⁽³⁾)
=8m⁹n⁻¹²
Hope this helps! :D