Step-by-step explanation:
x² + y² = 153 and y = -4x.
=> x² + (-4x)² = 153
=> x² + 16x² = 153
=> 17x² = 153
=> x² = 9.
Answer:
The answer is 1
Step-by-step explanation:
The value of any log where the base and the parameter are the same is always 1.
This is because the base raised to the first power will always be itself
1. 8/9 ÷ 4/9 is done by inverting the divisor (4/9) and then multiplying:
(8/9)(9/4) = 8/4 = 2 (answer)
2. 1/3 ÷ 6 is done similarly: (1/3)(1/6) = 1/18 (answer)
3. 4 ÷ 1/5 = 4 * 5 = 20 (answer)
4. 7 1/2 ÷ 1/4 = (15/2)(4/1) = 30 (answer)
