3 years ago

What fraction of his allowance did he spend on monday 1/6 3/6?

Mathematics

1 answer:

natima [27]3 years ago

7 0

Is this from iready cuz I don’t I’ve had that question before

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Solve the proportion of 2/v = 4/6

dsp73

$\dfrac{2}{v} = \dfrac{4}{6}$

Cross multiply:
$4v = 12$

Divide both sides by 4:
$v = 3$

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3 years ago

What does it mean if i say that there is a 25% chance there will rain tomorrow?

77julia77 [94]

It is not likely because it is less then 50% which 50 is half and 25% is 1/4 chance.

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3 years ago

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If xy is rational, must x and y each be rational?

balu736 [363]

<span>Your answer is is simply,no x and y could have a common irrational factor. </span>

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3 years ago

Write a possible third degree polynomial with integer coefficient that have zeros: 1 2i, -4. Assume the leading coefficient to b

jasenka [17]

Answer:

The polynomial is:

$p(x) = x^3 + 2x^2 - 3x + 20$

Step-by-step explanation:

A third degree polynomial can be written in function of it's zeros $x_1, x_2, x_3$ the following way:

$p(x) = a(x - x_1)(x - x_2)(x - x_3)$

In which a is the leading coefficient.

Integer coefficient that have zeros: 1+2i, 1-2i, -4

Leading coefficient: 1

$p(x) = 1(x - (1+2i))(x - (1-2i))(x - (-4))$

$p(x) = (x - 1 -2i)(x - 1 + 2i)(x + 4)$

$p(x) = ((x-1)^2 - (2i)^2)(x + 4)$

$p(x) = (x^2 - 2x + 1 - 4i^2)(x + 4)$

Since $i^2 = -1$

$p(x) = (x^2 - 2x + 1 + 4)(x + 4)$

$p(x) = (x^2 - 2x + 5)(x + 4)$

$p(x) = x^3 + 4x^2 - 2x^2 - 8x + 5x + 20$

$p(x) = x^3 + 2x^2 - 3x + 20$

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3 years ago

The diameter of a circle measures 12 m. What is the circumference of the circle?

andrezito [222]

Answer:

37.7

Step-by-step explanation:

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3 years ago

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