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3 years ago

What value of y makes this equation true? -12 = 6 + 2/3y

Mathematics

2 answers:

ioda3 years ago

6 0

-12 = 6 + 2/3y

Subtract 6 from both sides

-18 = 2/3y

Multiply both sides by 3

-54 = 2y

Divide both sides by 2

-27 = y

inn [45]3 years ago

6 0

Answer:

i will tell the answer call 6823082898

Step-by-step explanation:

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Find the geometric mean of 16 and 36. Write your answer in simplest form. The geometric mean is

Ede4ka [16]

Answer:

Step-by-step explanation:

the geo. mean is the nth root of the product of n numbers

Here there are two numbers; geo. mean is the square root of their product

g = √(16 * 36)

g = 4 * 6

g = 24

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2 years ago

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3 years ago

Find the equation of a line which has a slope of -9 and crosses the y axis at -7

Ymorist [56]

Answer:

Step-by-step explanation:

slope,m=0 and y-intercept (0,4) means this is a horizontal line that crosses the y-axis at 4. so, y=mx+b becomes y=b or y=4 which is the equation of given line.

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3 years ago

What adds up to -54 and multiplies to -16

Kaylis [27]

X + y = -54
xy = -16

$xy = -16$
$\frac{xy}{x} = \frac[-16}{x}$
$y = \frac{-16}{x}$

$x + y = -54$
$x + \frac{-16}{x} = -54$
$\frac{x^{2}}{x} + \frac{-16}{x} = -54$
$\frac{x^{2} - 16}{x} = -54$
$x^{2} - 16 = -54x$
$x^{2} + 54x - 16 = 0$
$x = \frac{-(54) \± \sqrt{(54)^{2} - 4(1)(-16)}}{2(1)}$
$x = \frac{-54 \± \sqrt{2916 + 64}}{2}$
$x = \frac{-54 \± \sqrt{2980}}{2}$
$x = \frac{-54 \± 59.6}{2}$
$x = -27 \± 29.8$
$x = -27 + 29.8$ $or$ $x = -27 - 29.8$
$x = 2.8$ $or$ $x = 56.8$

x + y = -54
  2.8 + y = -54
- 2.8 - 2.8
y = -56.8
(x, y) = (2.8, -56.8)

or

  x + y = -54
  -56.8 + y = -54
+ 56.8 + 56.8
y = 2.8
  (x, y) = (-56.8, 2.8)

The two numbers that add up to -54 and multiply to -16 are -56.8 and 2.8.

8 0

3 years ago

What is the equation for an arithmetic equation sequence with a first term of 5 and a second term of 2?

Margaret [11]

Answer:

THE THIRD ONE

Step-by-step explanation:

the equation: An=A1+d(n-1)

plug in the numbers

3 0

3 years ago

Read 2 more answers