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3 years ago

8 - (-5) + (-8) Can someone do a step by step explanation to do this problem? Please

Mathematics

2 answers:

g100num [7]3 years ago

4 0

Hope this will help u...:)

Katyanochek1 [597]3 years ago

3 0

Answer:

Step-by-step explanation:

two negatives = a positive.

8 + 5 - 8 = 5

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A square photograph is printed on a larger rectangular sheet of paper leaving a border around the

victus00 [196]

Answer:

E. x² + 11x - 42 = 0

Step-by-step explanation:

let the square sides be x

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x² + 11x + 30 = 72

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3 years ago

John is looking into a cell phone plan that will cost him $60 per month+$3.50 per gigabyte of data that is used. write an expres

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The answer is 60x+3.50

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3 years ago

Find S^20 if the series 1 + 1.1 ..... is a (a) arithmetic (b) geometric

quester [9]

I'm guessing S^20 is actually referring to the 20th partial sum $S_{20}$ , with

$S_{20}=1+(1+1\times0.1)+(1+2\times0.1)+\cdots+(1+18\times0.1)+(1+19\times0.1)$

in the arithmetic case, and

$S_{20}=1+1.1+1.1^2+\cdots+1.1^{18}+1.1^{19}$

in the geometric case.

(a) Combining like terms, we have

$S_{20}=20+0.1(1+2+\cdots+18+19)$

and invoking the formula

$1+2+\cdots+(n-1)+n=\dfrac{n(n+1)}2$

we end up with

$S_{20}=20+0.1\dfrac{19\times20}2=39$

(b) Multiply $S_{20}$ by 1.1, then subtract this from $S_{20}$ :

$1.1S_{20}=1.1+1.1^2+1.1^3+\cdots+1.1^{19}+1.1^{20}$

$S_{20}-1.1S_{20}=-0.1S_{20}=1-1.1^{20}$
$\implies S_{20}=\dfrac{1.1^{20}-1}{0.1}\approx57.275$

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3 years ago

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Oxana [17]

Answer:

in money or weighing things.

Step-by-step explanation:

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3 years ago

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The square root of 6 is 2.449...
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3 years ago