<span>So we want to know the number from which we take 25% and get 80. If the number we are looking for is x, then the equation to find that x would be: (25/100)*x=80 which says twenty five percent out of x is equal 80. So, x=(80*100)/25. And finally, x= 8000/25=320. So, 25% out of 320 is 80.</span>
Step-by-step explanation:
<h3>
6.) 80x²y</h3>
Prime factors of :
• 80 = 2 × 2 × 2 × 2 × 5
• x² = x × x
• y = y
• 80x²y = <u>2 × 2 × 2 × 2 × 5 × x × x × y</u>
<h3>
7.) 56x³y²</h3>
Prime factors of :
• 56 = 2 × 2 × 2 × 7
• x³ = x × x × x
• y² = y × y × y
• 56x³y² = <u>2 × 2 × 2 × 7 × x × x × x × y × y</u>
<h3>
8.) 81xy²</h3>
Prime factors of :
• 81 = 3 × 3 × 3 × 3
• x = x
• y² = y × y
• 81xy² = <u>3</u><u> </u><u>×</u><u> </u><u>3</u><u> </u><u>×</u><u> </u><u>3</u><u> </u><u>×</u><u> </u><u>3</u><u> </u><u>×</u><u> </u><u>x </u><u>×</u><u> </u><u>y </u><u>×</u><u> </u><u>y</u>
#CMIIW ^^
Answer:
2√(5)
Step-by-step explanation:
Since it's stated that thegiven is right triangle :
The square length of hypotenus (the side lenght that sees 90 degrees) is equal to sum of square length of side lengths
2^2 + 4^2 = x^2
4 + 16 = x^2
20 = x^2 and x = 2√(5)
Answer:
Speed of plane in still air = 825 km/h
Step-by-step explanation:
Given:
Speed of plane with the wind is 145 km/h faster than what it would have with still air.
Speed of plane with wind = 970 km/h
To find speed of plane in still air.
Solution:
Let speed of plane in still air be = 
km/h
Thus speed of plane with wind would be given as = 
km/h
Speed of plane with wind is given =970 km/h
So, we have:
Solving for .
Subtracting both sides by 145.
∴ 
km/h (Answer)
Thus, speed of plane in still air = 825 km/h
