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2 years ago

Solve the proportion for “m”. 4/12=m/39

Mathematics

2 answers:

Gala2k [10]2 years ago

6 0

Answer:

Step-by-step explanation:

4/12 = m/39

Simplify the fraction on the left

Divide the top and bottom by 4

1/3 = m/39

Using cross product

3m = 1*39

Divide each side by 3

3m/3 = 39/3

m = 13

Sav [38]2 years ago

3 0

Multiply both sides by 39 to get 13=M

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Scilla [17]

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2 years ago

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Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
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to both sides of the equation to get,

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The right hand side is now a perfect square.

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We now take square root of both sides to get;

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We add -2 to both sides,

$x = - 2 \pm \sqrt{ - 1}$

We simplify to obtain,

$x = - 2 \pm i$

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3 years ago

-1\dfrac{60}{100} + 0.1 + \dfrac{1}{4} =−1 100 60 +0.1+ 4 1

Jlenok [28]

Answer: Your question doesn't make any sense

Step-by-step explanation:

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3 years ago

The volume of a sphere is 972(pi)ft3.

pav-90 [236]

Here are some simple equations that can be a life saver with this stuff :

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3 years ago

What’s the answers for this?

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