First you get both distances
9.3 x 107 = 995.1 miles
8.87 x 108 = 957.96 miles
then you subtract them both
995.1 - 957.96 = 37.14 miles
and 37.14 miles is the distance between Earth and Saturn.
The answer is option C) 19,-19
<u>Step-by-step explanation</u>:
Given, z² = 361
To eliminate the square of z, take square root on both sides
z = √361
- The factor of 361 could not be an even number, since the last digit of 361 is odd. So, eliminate option A)
- The option B) is a larger number and it cannot be the answer. So, eliminate it.
- Try option C) works or not. (19)² = 1919 = 361 and (-19)² = -19-19 = 361.
- Therefore, z = √361 = ±19. option C) is the correct answer.
Hello :
This number is : x
you have : x + 2x² = 6
2x² + x -6 = 0
Δ = b² -4ac a = 2 , b = 1 , c = 6
Δ = 1² - 4(2)(6) = 49 = 7²
X1 = (- 1 +7)/4 = 3/2
X2 = (-1-7)/4 = -2