Answer:
x = 5
y = 4
Step-by-step explanation:
1. 2x + 2y = 18
2. x + 3y = 17
Multiply the first equation by 1 and the second equation by 2 to eliminate x
We have
2x + 2y = 18
2x + 6y = 34
Subtract equation 2 from equation 1
-4y = -16
Divide both sides by -4 to isolate y
-4y/-4 = -16/-4
y = 4
Now substitute 4 for y in either equation to get x. Using equation 2 we have
x + 3y = 17
x + 3 x 4 = 17
x + 12 = 17
Subtract 12 from both sides
x + 12 - 12 = 17 - 12
x = 5
x = 5 and
y = 4
Answer:
<h2>823.7 m²</h2>
Step-by-step explanation:
If a figure A and a figure B are similar, then
(*)
<em>k</em><em> - similarity scale</em>
<em />
Calculate the similarity scale:
We have the surface area of the smaller prism 572 m².
Substitute to the formula (*):
Answer: Step-by-step explanation:
y = -7x + 8
X y
-4 36
-2 22
0 8
2 -6
4 -20
3 is 25% of 12, so if you apply the same proportion to 180, a quarter of 180 is 45!!
