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Vanyuwa [196]
3 years ago
6

This system of equations has A. exactly one solution B. no solution C. infinitely many solution​

Mathematics
1 answer:
german3 years ago
5 0

Answer:

C.

Step-by-step explanation:

This is because both lines are parallel, leaving infinite solutions.

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Write the equation of a line that is perpendicular to y = 5 y=5y, equals, 5 and that passes through the point ( − 7 , − 5 ) (−7,
Jlenok [28]
The line of the equation perpendicular to y=5 and cuts through (-5,-7) will be given by
m(x-x1)=y-y1
where m=slope.
from y=0x+5, the slope of the perpendicular line m=0,
thus the equation will be:
0(x--5)=y--7
0=y+7
y=-7
The equation is y=-7
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3 years ago
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Murljashka [212]

Answer:

Step-by-step explanation:

3x + 11 + x - 9 + 56 = 180

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2 years ago
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IgorC [24]

Answer:

C.  

Step-by-step explanation:

5/8 = 20/32

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8 0
2 years ago
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kupik [55]

Answer: 6. d

7. b

8. d

9. c

Step-by-step explanation:

8 0
2 years ago
Find the area of the regular trapezoid. The figure is not drawn to scale. The top side is 4, the bottom side is 7, and both side
svp [43]
A regular trapezoid is shown in the picture attached.

We know that:
DC = minor base = 4
AB = major base = 7
AD = BC = lateral sides or legs = 5

Since the two legs have the same length, the trapezoid is isosceles and we can calculate AH by the formula:

AH = (AB - DC) ÷ 2
      = (7 - 5) ÷ 2
      = 2 ÷ 2
      = 1

Now, we can apply the Pythagorean theorem in order to calculate DH:
DH = √(AD² - AH²) 
      = √(5² - 1²)
      = √(25 - 1)
      = √24
      = 2√6

Last, we have all the information needed in order to calculate the area by the formula:

A =  \frac{(AB + CD)DH}{2}

A = (7 + 5) × 2√6 ÷ 2
   = 12√6

The area of the regular trapezoid is 12√6 square units.

7 0
3 years ago
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