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2 years ago

Random question so I can keep studying.. Find the value of x when 2x = 64

Mathematics

2 answers:

AVprozaik [17]2 years ago

4 0

Answer:

x=32

Step-by-step explanation:

2x=64

divide both sides by 2

2x/2=64/2

x=32

liq [111]2 years ago

4 0

Answer:

x=32

Step-by-step explanation:

Our goal when solving algebraic equations is always to isolate the variable. We can do this by performing reverse operations (for example, the reverse operation of addition is subtraction and the reverse operation of multiplication is division) on both sides of the equation.

$2x=64$

Because x is being multiplied by 2, <em>divide</em> both sides by 2 to isolate x.

$\frac{2x}{2} = \frac{64}{2}$

2 cancels out on the left side of the equation

$x=\frac{64}{2} \\x=32$

I hope this helps!

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Find the area and the circumference of a circle with a diameter 8yrd.

nalin [4]

Answer:

Part 1) The area of the circle is $A=50.24\ yd^2$

Part 2) The circumference of the circle is $C=25.12\ yd$

Step-by-step explanation:

step 1

The area of a circle is equal to

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we have

$r=8/2=4\ yd$ ---> the radius is half the diameter

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substitute

$A=(3.14)(4)^{2}$

$A=50.24\ yd^2$

step 2

The circumference of a circle is equal to

$C=\pi D$

we have

$D=8\ yd$

$\pi =3.14$

substitute

$C=(3.14)8$

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2 years ago

The point P(x,y) lies on the terminal side of an angle θ = -60° in standard posistion. What are the signs of the values of x and

lyudmila [28]

Answer:

x positive, y negative

Step-by-step explanation:

-60 is the 4th quadrant of the unit circle ( negative angles go clockwise from 0), so the x value is positive and the y value is negative.

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3 years ago

Tamara was asked to write an example of a linear functional relationship. She wrote this example:

Llana [10]

Answer:

Tamara's example is in fact an example that represents a linear functional relationship.

This is because the cost of baby-sitting is linearly related to the amount of hours the nany spend with the child: the more hours the nany spends with the child, the higher the cost of baby-sitting, and this relation is constant: for every extra hour the cost increases at a constant rate of $6.5.

If we want to represent the total cost of baby-sitting in a graph, taking the variable "y" as the total cost of baby-sitting and the variable "x" as the amount of hours the nany remains with the baby, y=5+6.5x (see the graph attached).
The relation is linear because the cost increases proportionally with the amount of hours ($6.5 per hour).
See table attached, were you can see the increses in total cost of baby sitting (y) when the amount of hours (x) increases.