<u><em>3.95(3) + 8.95b = 47.65</em></u>
<u><em>11.85 + 8.95b = 47.65</em></u>
<u><em></em></u>
<u><em>Subtract 11.85 from both sides.</em></u>
<u><em></em></u>
<u><em>8.95b = 35.8</em></u>
<u><em></em></u>
<u><em>Divide 8.95 from both sides.</em></u>
<u><em></em></u>
<u><em>b = 4</em></u>
<u><em></em></u>
<u><em>Hugh bough 4 books.</em></u>
<u><em></em></u>
a) Rectangles are similar
b) 1 : 9
c) No volume
Step-by-step explanation:
Step 1 :
Given
The length and width of rectangle1 is x and y
The length and width of rectangle2 is kx and ky
Step 2 :
a)
2 rectangles are similar when the sides of the rectangles are proportional
Since here we have the sides of rectangle 2 obtained by multiplying each side of the first rectangle by a non zero constant term , the 2 given rectangles are proportional
Step 3 :
b)
Area of rectangle1 is x * y
Area of rectangle is 3x * 3y = 9xy (given k = 3)
Ratio of the areas is xy : 9 xy = 1 : 9
Step 3 :
Given k = 2
There is no volume for a 2 dimensional figure
Answer:
right the box in the corner means it's a 90 degree angle or a right angle
Answer:
NO SOLUTION
Step-by-step explanation:
Let's actually solve the system
x-4y=1
5x-20y=4
Let's eliminate y. To do this, multiply the first equation by -5, obtaining
-5x + 20y = -5
Now add this result to the second equation:
-5x + 20y = -5
5x - 20y = 4
--------------------
0 = -1
This result is never true. Thus, this system of linear equations has NO SOLUTION.