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san4es73 [151]
4 years ago
10

Please help with these questions please!!!

Mathematics
1 answer:
Andreyy894 years ago
6 0

Answer:

1). x = 0

2). Option 3

Step-by-step explanation:

1). If the two triangles are similar,

   Their corresponding sides will be proportional.

   \frac{5x+2}{6}=\frac{x+4}{12}

   12(5x + 2) = 6(x + 4)

   60x + 24 = 6x + 24

   60x - 6x = 24 - 24

   54x = 0

   x = 0

2). Option 1

   2(x - 6) + 3 - 5x = -3x - 9

   2x - 12 + 3 - 5x = -3x - 9

   -3x - 9 = -3x - 9

   True.

   Option 2

   4(2x - 5) + 10 - 5x = 3x - 10

   8x - 20 + 10 - 5x = 3x - 10

   3x - 10 = 3x - 10

   True

   Option 3  

   5x + 4 = 3x + 4

    False

    Option 4

    8x + 3 - 2 = 8x + 1

    8x + 1 = 8x + 1

    True.

Therefore, option 3 is False.

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Distance between A (2, -1) and (2,a) is 4 units. Find the value of a where a is positive.
kolezko [41]

Answer:

a = 3

Step-by-step explanation:

Calculate the distance d using the distance formula and equate to 4

d = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = (2, - 1) and (x₂, y₂ ) = (2, a)

d = \sqrt{(2-2)^2+(a+1)^2} = \sqrt{0+(a+1)^2} = \sqrt{(a+1)^2} = a + 1 then

a + 1 = 4 ( subtract 1 from both sides )

a = 3

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maw [93]

Answer:

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Step-by-step explanation:

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4 years ago
Question 1<br> Determine the midpoint of the segment with endpoint (-9,3) and (7,-8).<br> Question 2
mario62 [17]

Answer:

(-1, -2.5)

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
Math on khan academy
IRINA_888 [86]
The answer is b I believe
5 0
3 years ago
Mathematics in the london eye answers
san4es73 [151]
CENTRAL ANGLE: 
<span>There are 32 passenger cars, so you want an angle equal to 1/32 of the full circle. 
</span>
<span>The full circle in degrees is 360°, but you want radians. </span>
<span>The full circle in radians is 2π. </span>
<span>2π / 32 </span>
<span>= π/16 radians 
</span>
<span>ARC LENGTH </span>
<span>The arc length would be 1/32 of the full circumference. I know you already asked and got answers for the full circumference. Divide that by 32. 
</span>
<span>AREA OF SECTOR: </span>
<span>Ditto on this. You have the full area from a prior question. Now just divide it by 32</span>
6 0
4 years ago
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