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2 years ago

Why is 1/2 the same as 0.5

Mathematics

1 answer:

Basile [38]2 years ago

5 0

Answer:

it’s because 0.50 is half of 100 and 1/2 is a reduced fraction of 50/100.

Step-by-step explanation:

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Which of the following represents the zeros of f(x) = 2x3 − 5x2 − 28x + 15?

likoan [24]

$\mathrm{Use\:the\:rational\:root\:theorem}$

$a_0=15,\:\quad a_n=2$

$\mathrm{The\:dividers\:of\:}a_0:\quad 1,\:3,\:5,\:15,\:\quad \mathrm{The\:dividers\:of\:}a_n:\quad 1,\:2$

$\mathrm{Therefore,\:check\:the\:following\:rational\:numbers:\quad }\pm \frac{1,\:3,\:5,\:15}{1,\:2}$

$-\frac{3}{1}\mathrm{\:is\:a\:root\:of\:the\:expression,\:so\:factor\:out\:}x+3$

$\mathrm{Compute\:}\frac{2x^3-5x^2-28x+15}{x+3}\mathrm{\:to\:get\:the\:rest\:of\:the\:eqution:\quad }2x^2-11x+5$

$=\left(x+3\right)\left(2x^2-11x+5\right)$

$Factor: 2x^2-11x+5$

$2x^2-11x+5=\left(2x^2-x\right)+\left(-10x+5\right)$

$=x\left(2x-1\right)-5\left(2x-1\right)$

$2x^3-5x^2-28x+15=\left(x+3\right)\left(x-5\right)\left(2x-1\right)$

$\left(x+3\right)\left(x-5\right)\left(2x-1\right)=0$

$\mathrm{Using\:the\:Zero\:Factor\:Principle:}$

thus zeros of f(x) is

$x=-3,\:x=5,\:x=\frac{1}{2}$

5 0

3 years ago

Read 2 more answers

I need this rn please and ty

Harlamova29_29 [7]

Answer:

A. 22.5

Step-by-step explanation:

4 0

3 years ago

Are the following lines parallel, perpendicular, or neither?

S_A_V [24]

Y = 7x + 12
-7y = x + 56

-7y = x + 56
-7 -7
y = ⁻¹/₇ - 8

The following lines are perpendicular.

3 0

3 years ago

The volume of a rectangular prism is 270 cubic centimeters. The height of the prism is 5 centimeters. What should the length and

arlik [135]

V=volume h=height l=length w=width
V=h•w•l
w•l=v/5
w•l=270/5
w•l=54
Since this is all we know, we can't tell what the width or length really is but we can give examples: 6 and 9 (or 9 and 6), 4 and 13.5 (or the other way round), 18 and 3 (or 3 and 18), 2 and 27 (or 27 and 2).

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3 years ago

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Subtract 5x−2 from −3x+4 .

mixas84 [53]

Answer:

8x + 6

Step-by-step explanation:

$5x - 2 - - 3x + 4 \\ = \: 5x - 2 + 3x + 4 \: \\ = 5x + 3x + 2 + 4 \: (add \: like \: terms \: together \: and \: switch \: over \: the \: - 2 \: making \: it \: a \: 2) \\ = \: 8x \: + 6$

This is actually the correct answer after I solved it continuously

5 0

3 years ago