Answer:
-⅖
Step-by-step explanation:
We need to simplify the given equation and find out the value of a , as ,
=> 3(a-1)+31-11a = 4(2a+3)
=> 3a -3+31-11a = 8a + 12
=> -8a -28 = 8a + 12
=> 16a = -28-12
=> 16a = -40
=> a = -2/5
<h3>
• Hence the value of a is -⅖ .</h3>
Answer:
D
.(w)(2w+7)=85
Step-by-step explanation:
Hi, to answer this question we have to apply the next formula:
Area of a rectangle: width x length
Since the length will be 7 feet longer than twice its width (w).
So, to obtain the length we have to multiply the width by 2 (twice) and add 7.
Mathematically speaking:
Length: 2w+7
Back with the area formula:
Area of a rectangle: length x width
Replacing with the values given:
85 = w (2w+7)
Note: option D correct equation is D
.(w)(2w+7)=85, since we don't have x variables.
