-5x + 3(2x - 6) = -13
-5x + 6x - 18 = -13
x = 5 => y = 4
Answer: 3 (first choice)
A power to a power gives a multiplication of powers, e.g.,
(7¹⁰)² = 7²⁰
So the left side is 7²⁰ / 7⁴ and we divide the top and bottom by 7 get we
(7¹⁰)² / 7⁴ = 7²⁰ / 7⁴ = 7¹⁹ / 7³
We compare that to the right side 7¹⁹ / 7ˣ and it's clear x=3.
Answer:
Buddy the dog has 18 bones, but he was bad so his owner took some away. Buddy is left with 12 bones. How many bones did his owner take away?
Step-by-step explanation:
Step 1: Identify your varaibles. Buddy's original bones, 18. Buddy's bones after his owner took some way, 12. The bones that his owner took away, X
Step 2: set up your equation. X = 18 - 12
Step 3: solve for x. 18 - 12 = 6
Step 4: Answer the question in contect. His owner took away 6 bones.
Answer:
It takes 2.24 s for the phone to land.
Step-by-step explanation:
The height of the phone as it drops can be modeled with the equation
h= -16t²+80
where h is measured in feet and t represents the number of seconds since the phone was dropped.
When the phone hits the ground then height of the phone becomes zero.
i.e h=0
-16t²+80=0
⇒16t²=80
⇒ t² =5
∴t=2.24 s [ since time can not negative]
It takes 2.24 s for the phone to land.
