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3 years ago

12

A hiker walks an average rate of 2 miles per hour. Write a multiplication equation to find how long it will take for the hiker t

o walk 11 miles?

1 answer:

kykrilka [37]3 years ago

7 0

Y= X/2

-----
y= 11/2
y= 5.5 hrs

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2 years ago

Twice a number divid by 6 is 42

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A number=x

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2 years ago

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Congruent angle pairs : Find value of x

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Answer:

(Opt.B) 18

Step-by-step explanation:

4x = 2y - x (vertically opposite angles are equal)

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4x + 2y + x = 180 (Linear pair angles)

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From (1) we can understand that, the value of 5x and 2y is the same. So,

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x = 180/10

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Just completing,

Putting the value of x in (1)

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3 years ago

Given 3X=-15<br> Prove X =-5

BartSMP [9]

Answer:

X = -5

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3X=-15

Lets solve the equation for x. We will isolate x by dividing each side by 3

3X/3 = -15/3

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If the diameter of circle a measures half of the diameter of circle b, then the area of circle b is how many times the area of c

Eduardwww [97]

Circle b:

Diameter = x

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Area = $\pi r^{2} = \pi ( \frac{x}{2} )^{2} = \frac{ \pi x^{2} }{4}$

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Diameter = $\frac{x}{2}$

Radius = $\frac{x}{2} * \frac{1}{2} = \frac{x}{4}$

Area = $\pi r^{2} = \pi ( \frac{x}{4} )^{2} = \frac{ \pi x^{2} }{16}$

Thus,

Area of circle b to area of circle a

= $\frac{ \pi x^{2} }{4}$ ÷ $\frac{ \pi x^{2} }{16}$

= $\frac{ \pi x^{2} }{4}$ × $\frac{ 16 }{\pi x^{2}}$

= 4

Hence, the area of circle b is 4 times the area of circle a.

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3 years ago