Answer:
#5: 2000+80z
#6: 2.63a+4.5b
#7: 5(9c+2d)
#8: 3(9-3x+5y)
Step-by-step explanation:
Answer:
all rectangles are quadrilaterals
Step-by-step explanation:
this is because they have all right angles it doesn't matter the size or measurements, and this goes for squares as well since squares are a type of rectangle and we all know that squares have all equal side lengths and they all have right angles
<h2>
<em>Answer:</em></h2><h3>
<em>2</em><em>5</em><em>4</em><em>.</em><em>3</em><em>4</em><em> </em><em>m^</em><em>2</em></h3>
<em></em>
<em>Hope </em><em>it</em><em> helps</em><em>.</em><em>.</em><em>.</em>
<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em>
Based on the information given, the correct options will be
y = x + 6 and 3x - 3y = -18 .... Infinitely many solutions.
y = -2x + 5 and 2x + y = -7 .... No solution.
y = -4x + 11 and -6x + y = 11 ... One solution.
Solving equations
y = -4x + 11 ....... equation i
-6x + y = 11 ...... equation ii
Put equation i into ii.
-6x + y = 11
-6x + (-4x + 11) = 11
-6x - 4x + 11 = 11
-6x - 4x = 11 - 11
-10x = 0
x = 0
Therefore, x = 0 and y = 11. This gives a solution for each variable.
y = -2x + 5 ..... i
2x + y = -7 ..... ii
Put equation I into ii
2x + y = -7
2x + (-2x + 5) = -7
2x - 2x = -7 - 5
0 = -12
This indicates no solution.
y = x + 6 ..... i
3x - 3y = -18 ..... ii
Put equation I into ii
3x - 3y = -18
3x - 3(x + 6) = -18
3x - 3x - 18 = -18
3x - 3x = - 18 + 18
0 = 0
This implies that there are infinitely many solutions.
Learn more about equations on:
brainly.com/question/13763238
#SPJ1
1 plus 1 equal 2 because your just adding