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4 years ago

Isolating variables abx=cy the variable is x. [please show me how)

Mathematics

2 answers:

Arada [10]4 years ago

5 0

Abx = cy

We want to get rid of 'ab', and it is being multiplied to 'x', so we divide it to both sides.

x = (cy)/(ab)

xxTIMURxx [149]4 years ago

5 0

$abx=cy\\
x=\dfrac{cy}{ab}$

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Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credi

adoni [48]

Answer:

$r = 4$

The center is:

(2, -4)

Step-by-step explanation:

We have the following equation

$x^2 - 4x + y^2 + 8y = -4$

The general equation of a circle has the following form

$(x-h)^2 + (y-k)^2 = r^2$

Where r is the radius and the point (h, k) is the center of the circle

To transform the given equation in the general equation of a circumference we must use the method of square completions

Step 1

$(x^2 - 4x) + (y^2 + 8y) = -4$

Step 2

Add and subtract $(\frac{b}{2})^2$ For an equation of the form

$ax^2 +bx +c$

$(x^2 - 4x +4)-4 + (y^2 + 8y +16) -16= -4$

Step 3 Factor the expressions within the parentheses

$(x-2)^2-4 + (y+4)^2 -16= -4$

Step 4 Simplify

$(x-2)^2 + (y+4)^2= -4+16+4$

$(x-2)^2 + (y+4)^2= 4^2$

Finally

$r = 4$

The center is:

(2, -4)

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3 years ago

Solve this equation:-9h-6+12h+40=22

yulyashka [42]

Answer:

h = -4

Step-by-step explanation:

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4 years ago

Add (8b - 7) + (6b + 8) simplify the answers. Pls show steps

katovenus [111]

I’m not rlly sure if i did it right & i’m sorry if i didn’t. i used the FOIL method
f= first to first
o=outer to outer
i=inner to inner
l= last to last
so it’d be
8b + 6b = 14b (f)
8b+ 8=16b(o)
-7+6b=-1b(i)
-7+8(l)
and then you add like terms so
[14b+16b-1b]+1
= 29b+1

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MAVERICK [17]

Answer:

A) 5600 ft

B) 5600 ft

C0 More than a mile

Step-by-step explanation:

4850 * sin(60) = 5600

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3 years ago

the sum of twice a number and 18 less than the number is the same difference between -30 and the number. What is the number?

trasher [3.6K]

X - the number

$2x+x-18=-30-x \\
3x-18=-30-x \\
3x+x=-30+18 \\
4x=-12 \\
x=\frac{-12}{4} \\
x=-3$

The number is -3.

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3 years ago