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3 years ago

How can fraction strips, number lines, and thinking with numbers help you find equivalent fractions?

2 answers:

5 0

Nothing creepy plz >3<

Are you brave?
Repost this to ur page any one who reads this can ask u any question and u Have to answer the question no matter what it is :P

maks197457 [2]3 years ago

4 0

Fraction strips can help because you can see if one strip can line up equally with the other.

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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

Solve 2x3 + x2 - 15x completely by factoring.

Ludmilka [50]

2x^3+x^2-15x factored completely would be: <em>x(x+3)(2x-5).</em> Not sure which answer choice but I hope that I was some help.

8 0

3 years ago

Witch one should i pick? please help me.

s2008m [1.1K]

Answer:

Step-by-step explanation:

The rectangle has an area of 30ft^2

Each triangle has an area of 25ft^2

25+25+30=80

6 0

3 years ago

OUT OF 20 ATTEMPTS A BASKETBALL

Kamila [148]

40 percent

*how to solve*

First write 8 out of 20 as a fraction:
8/20

Then multiply both sides by 5 so that the denominator is 100:
40/100

40/100 = 40 percent

5 0

4 years ago

The atomic number for U is?

RSB [31]

Atomic number for uranium is 92

8 0

3 years ago