Answer:
This uses the method of elimination/addition.
Step-by-step explanation:
1 (9x + 7y = 15)
-7 (5x + y = -9) <— let’s eliminate y for both equations
9x + 7y = 15
+ -35x - 7y = 63 <— add both of the equations
—————————————————
- 26x + 0y = 6
(Please let me know if the answer is correct or not)
Answer:
<u>3.4</u>
Step-by-step explanation:
Converting all terms to multiples of 10³ :
- 4 × 10² + 3 × 10³
- 0.4 x 10³ + 3 x 10³
- (0.4 + 3) × 10³
- <u>3.4</u> × 10³
Answer:
Its all messed up
Step-by-step explanation:
Answer:
1/4 or 0.25
Explanation: Convert the mixed numbers to improper fractions, then find the LCD and combine.
The formula is

We have:


Substituting these values into the formula, we have


⇒ divide each term by 16

⇒ find the pair of numbers that multiply to give 4 and sum gives -5 which is -1 and -4

⇒ We have two values of t

⇒


⇒

The time when the projectile reached 64 feet is at t=1 and t=4