Answer:
C) (x + 3i)(x - 3i)
Step-by-step explanation:
(x + 3i)(x - 3i)
=x² - (3i)² [(a+b)(a-b)=a²-b²]
=x² - 9i²
=x² - 9(-1) [i²=-1]
= x² + 9
Answer:
7
Step-by-step explanation:
First, you need to plug in the values for x. Here, we know that x = 5. So, when we plug it in we get 2^5 - 5^2. When we simplify, we then get 32 - 25. Thus, 32 - 25 = 7.
Complete question :
On average, light emitted from the Sun takes 8 minutes 19 seconds to reach Earth. Using your approximated speed of light from part (b), as well as the equation distance = rate x time, calculate the approximate distance from the Earth to the Sun in meters. Write your answer in standard form and in scientific notation.
Answer:
1.497 * 10^8km
149700000 km
Step-by-step explanation:
Given that:
Time taken = 8 minutes 19 seconds
Speed of light = 3 * 10^8 m/s
Distance from earth to sun :
Speed * time
(3 * 10^8) * ((8 * 60) + 19)
(3 * 10^8) * 499
= 1497 * 10^8 m or 1497 * 10^5 km = 1.497 * 10^8km
= 149700000000 m
= 149700000 km
= 1497
let's say that number is "x", so that is then the 100%.
if 150 is 25%, what is "x"?
Answer:
Let Tom's cards = x
Equation:
Neils Cards = x + 83 (Neil has 83 more cards)
x + 83 = 517 (Tom has 83 cards less than Neil)
x = 434
