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aalyn [17]
3 years ago
10

HELP with number 19 please

Mathematics
1 answer:
Over [174]3 years ago
4 0

Answer:

Step-by-step explanation:

jx(W)

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10-12 please help, find the missing number and once you found the missing number and answered it you make sure it’s the solution
irinina [24]

10. Infinitely many solutions:

2(x-1)+6x=4(?-1)+2.

Simplify this equation:

2x-2+6x=4\cdot ?-4+2,\\ \\8x-2=4\cdot ? -2,\\ \\8x=4\cdot ?

When ?=2x, the equation becomes

8x=8x \text{ or } 0=0.

This equality is true for all x, thus the equation has infinitely many solutions.

11. The equation 5x-(x-2)=2x-(?) should have one solution x=-1.

First, simplify the equation:

5x-x+2=2x-?,\\ \\4x+2=2x-?,\\ \\2x+2=-?,\\ \\?=-2x-2.

This equation will have solution x=-1 when

?=-2\cdot (-1)-2=2-2=0.

Therefore, the initial equation is

5x-(x-2)=2x.

12. The equation -(x-8)+4x=2\cdot ?+x should have infinitely many solutions.

Simplify it:

-x+8+4x=2\cdot ?+x,\\ \\2x+8=2\cdot ?,\\ \\2(x+4)=2\cdot ?.

When ?=x+4, this equation will have infinitely many solutions.

6 0
3 years ago
Pls help me with math ASAP
Vladimir79 [104]
C. Supplementary
This means their angles add up to 180° which is a straight line
3 0
3 years ago
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the area of a rectangle is 95 square yard. if the perimeter is 48 yards find the length and width of rectangle
Vladimir [108]
Try this option:
according to the condition w+l=48 and w*l=95.
Using these two equation:
\left \{ {{l+w=48} \atop {lw=95}} \right. \ =\ \textgreater \  \   \left[\begin{array}{ccc}l=24- \sqrt{481};w=24+ \sqrt{481}\\ \\l=24+ \sqrt{481};w=24- \sqrt{481}\end{array}
4 0
3 years ago
What is the slope of a line that is parallel to the line y = x + 2?
Sauron [17]

Answer:

m = - 1

Step-by-step explanation:

6 0
3 years ago
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Please answer the following:
konstantin123 [22]

Answer:

26 1/2

Step-by-step explanation:

convert 4 5/12 into 53/12

multiply 53/12 by 6 to get 53/2

turn 53/2 into a mixed number = 26 1/2

3 0
3 years ago
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