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Kipish [7]
2 years ago
15

Determine the value of the expression 2(x - 3) when x = 2.

Mathematics
2 answers:
erica [24]2 years ago
8 0

Answer:

-2

Step-by-step explanation:

2(x-3), x=2

Since we know what x equals, plug it into the equation

2(2-3)

2(-1)

-2

Mrac [35]2 years ago
3 0

Answer:

2(2-3)

4-3

1

Step-by-step explanation:

2(2 - 3) \\ 4 - 3 \\ 1

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Answer:

1, 3, 3, 6, 10, 10, 11, 14

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Step-by-step explanation:

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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}

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Step-by-step explanation:

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Lilly takes a train each day to work that averages 35 miles per hour. On her way home, her train ride follows the same path and
Klio2033 [76]

Answer: 2.5=\frac{n}{35}+\frac{n}{45}


Step-by-step explanation:

1. To find the equation asked, you must add the times:

t_{total}=t_1+t_2

Where t_1 is the time takes Lilly in her path to work and t_2  is the time takes Lilly in her path to home.

2. You must use the following formula of speed and solve for the time

V=\frac{n}{t}

Where n is the distance, V is the speed and t is the time.

3. You know that Lilly takes a train each day to work that averages 35 miles per hour, then, you can write the following expression:

35=\frac{n}{t_1}\\t_1=\frac{n}{35}

4. And her train ride follows the same path at 45 miles per hour:

 45=\frac{n}{t_2}\\t_2=\frac{n}{45}

5. Then, you obtain the following equation:

2.5=\frac{n}{35}+\frac{n}{45}

5 0
2 years ago
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