Answer:
It will take 1 5/7 hours
Step-by-step explanation:
3/4 of an hour is;
3/4 * 60 minutes = 45 minutes
3 1/2 acres is done in 45 minutes
8 acres will be done in x minutes
Thus, mathematically;
3 1/2 * x = 8 * 45
7x/2 = 360
7x = 2 * 360
7x = 720
x = 720/7 minutes
Let us convert this to hours
That will be;
720/7/60 = 720/(60 * 7) = 720/420 = 12/7
= 1 5/7 hours
Method solving a quadratic equation by factoring
Method 2 using the quadratic formula
Expanded=4x+12+6x+12
Simplified=10x+24
Four million, seven hundred thirty thousand.
Answer: Question 28 answer is larynx
Question 29:The vocal cords are two bands of smooth muscle tissue found in the larynx. The vocal cords vibrate and air passes through the cords from the lungs to produce the sound of your voice.
Question 30:The vocal folds produce sound when they come together and then vibrate as air passes through them during exhalation of air from the lungs. This vibration produces the sound wave for your voice.
