Answer:
Step-by-step explanation:
Question (1)
x² + 10x + 12
= x² + 2(5x) + 5² - 5² + 12
= [x² + 2(5x) + 5²] - 5² + 12
= (x + 5)² - 25 + 12 [Since, a² + 2ab + b² = (a + b)²]
= (x + 5)² - 13
Question (2)
y² - 6y - 15
= y² - 2(3y) - 15
= y² - 2(3y) + 3² - 3² - 15
= [y² - 2(3y) + 3²] - 3² - 15 [Since, a² - 2ab + b² = (a - b)²]
= (y - 3)² - 3²- 15
= (y - 3)² - 9 - 15
= (y - 3)² - 24
Answer:
The jet could fly 3,525 miles in 15 hours.
The rate of speed is 235 miles an hour.
Step-by-step explanation:
Step 1- Find the rate of speed
470÷2= 235
235 miles an hour
Step 2- Multiply
235×15= 3,525
Let's say the prisms dimensions were 2×2×2 and you doubled the height 4×2×2.
2×2×2=8 while 4×2×2=16
another example:
4×3×6=144 while 8×3×6=288
therefor it doubles the volume of the prism
Answer:
Ok fr fr the answer is in the pics
Step-by-step explanation: