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3 years ago

John claims the following two expressions are equivalent.

Mathematics

1 answer:

MrRissso [65]3 years ago

3 0

Answer:

the answer is B. He should have only multiplied 3 by –2 resulting in the expression 5y – 6.

Step-by-step explanation:

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Given the polynomial function

timofeeve [1]

Answer:

1) +1,+2,+3,+6,-1,-2,-3,-6

2) f(2) = 0

3) (x+1)(x-2)(x-3)

4) x=-1, x=2, x=3

Step-by-step explanation:

For explanation, see the attached files

7 0

3 years ago

Please i need an answer urgently. Sum of 3 terms are 252, first term is 192. Find common ratio

Viefleur [7K]

Answer:

$r=\frac{1}{4}\\\\r=-\frac{5}{4}$

Step-by-step explanation:

<u>Geometric Sequences</u>

The geometric sequence is given as:

$a_1, a_1r, a_1r^2, a_1r^3,..., a_1r^{n-1}$

Where n is the number of the term, n≥1, and r is the common ratio.

The sum of n terms of the geometric sequence is given by:

$\displaystyle S_n=a_1\frac{r^n-1}{r-1}$

We are given: S3=252, a1=192, thus substuting:

$\displaystyle 252=192\frac{r^3-1}{r-1}$

Dividing by 12:

$\displaystyle 21=16\frac{r^3-1}{r-1}$

Recall that:

$r^3-1=(r-1)(r^2+r+1)$

Substituting:

$\displaystyle 21=16\frac{(r-1)(r^2+r+1)}{r-1}$

Simplifying:

$21=16(r^2+r+1)=16r^2+16r+16$

Rearranging:

$16r^2+16r+16-21=0$

16r^2+16r-5=0

Rewriting:

$16r^2-4r+20r-5=0$

Factoring:

$4r(4r-1)+5(4r-1)=0$

$(4r-1)(4r+5)=0$

Solving:

$r=\frac{1}{4}\\\\r=-\frac{5}{4}$

Both solutions are valid

6 0

2 years ago

What is 20% as a decimal

morpeh [17]

Answer is 0.2

To fnid the decimal, dovide the percentage by 100. 20/100 is 0.2.

I hope youre still around to read this

6 0

3 years ago

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Geometry geometry geometry help help

Leokris [45]

Answer:

what is it asking you? don't just show the problem tell us what needs to be done.

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2 years ago

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What's 9×9×9×9×9×91×29×37×74+1000

Anettt [7]

Answer:

6.1923849e+12

Step-by-step explanation:

If you go left to right (9x9) x (9x9) You can get the same answer. It will extend further But you get the point right?

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2 years ago

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