Answer:
1332
Step-by-step explanation:
[n=1 to 24]∑(5n−7)
= 5*24*25/2 - 7*24
= 1332
Answer:
66
Step-by-step explanation:
<u>solve the problem backwards</u>:
?/3=?-7=15
The opposite of subtract is adding
15+7=22
The opposite of division is multiplication
(22)3=66
plug 66 in:
66/3=22
22-7=15
<em> </em><em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>.</em>
Answer:
A.) w² + 3w in²
B.) 28 in²
Step-by-step explanation:
A.)
Let w = width and l = length.
The area of a rectangle can be written as length · width (base · height). The problem informs us that the length of the rectangle is 3 inches greater than the width. Therefore, l can also be written as w + 3. We can use this to form a polynomial that represents the area of the rectangle.
A(rectangle) = lw = (w + 3) · w = w² + 3w
B.)
Use the polynomial we previously found to find the area.
A(rectangle) = (4)² + 3(4) = 16 + 12 = 28 in²
Model: