Answer:

Step-by-step explanation:
Given:
The expression to simplify is given as:

We have to simplify this using the properties of exponents.
The property that we use here is:

So, let us simplify the powers of
separately and -24 and 8. This gives,

Therefore, the simplified form is:

Answer:
By 10° celcius rhe temperature drop that day
Step-by-step explanation:
As in this we will subtract...
9°-(-1°)
= 10°
Answer:
a) Angle XBC = 55° because it is a corresponding angle to 55°
b) angle BXC = 70°
Step-by-step explanation:
ΔXBC is an isosceles triangle because XB = XC
∠XCB = ∠XBC because ΔXBC is an isosceles triangle
∠BXC = 180° - 55° - 55° = 70° because the sum of all the interior angles of a triangle - 180°