Answer:
$15.40
Step-by-step explanation:
first, let's find the 3/4. to find this, just multiply the decimal form, .75 by the price per pound because then we get the amount for 3/4 pound. that number is $4.20. next, we need to find the 2 pounds by multiplying the price per pound by the 2 pounds, which gets us $11.20. add those together and you get $15.40.
Use the FOLD method<span>
(a+b)(c+d)=ac+ad+bc+bd
</span><span>−12<span>s<span><span>^2 </span><span></span></span></span>+ 3st + 8ts − 2<span>t<span><span>^2</span><span>
</span></span></span></span>Collect like terms
-12{s}^{2}+(3st+8st)-2{t}^{2}
Simplify
<span>-12{s}^{2}+11st-2{t}^{2}<span>−12<span>s<span><span>2</span><span></span></span></span>+11st−2<span>t<span><span>2
The answer is = -12s^2 + 11st - 2t^2</span></span></span></span></span>
Answer:
21.09 ft/s
Step-by-step explanation:
The first step is to create the ratio of speed/time.
![\frac{56 miles}{4 hours}](https://tex.z-dn.net/?f=%5Cfrac%7B56%20miles%7D%7B4%20hours%7D)
Next we must simplify
![\frac{14 miles}{1 hour}](https://tex.z-dn.net/?f=%5Cfrac%7B14%20miles%7D%7B1%20hour%7D)
Next we must convert 14 miles in to feet. There are 5280 feet in a mile.
14 * 5280ft = <u>75,920 feet</u>
Now for hours into seconds.
1 hour = 60 min, 60 min = 3600 seconds
Our new ratio is \frac{75920ft}{3600sec}
simplify.
75920ft / 3600sec = 21.09ft/s
Answer: well there are 2 zeros in the number on the left so thats why the decimal would be there
Step-by-step explanation: