Answer:
b & c for sure
Step-by-step explanation:
............
Answer:If you are using a calculator, simply enter 770×100÷70, which will give you the answer.
Step-by-step explanation:
Step-by-step explanation:
<u>Rule:</u>
When exponents multiply, they're adding.
<u>Multiply:</u>

Option A is correct.
answer is the first one and the last 2
Answer:
height of the wall = 9.79 m
Step-by-step explanation:
This form a right angled triangle.
Hypotenuse = length of the ladder = 10 m
Base = length from foot of ladder to wall.
Altitude = height of the wall
Pythagorean's theorem,
base² + altitude² = hypotenuse²
2² + altitude² = 10²
4 + altitude² = 100
altitude² = 100 - 4
altitude² = 96
altitude = √96 = 9.79 m