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2 years ago

Evaluate.

Mathematics

1 answer:

Temka [501]2 years ago

8 0

9514 1404 393

Answer:

-7/48

Step-by-step explanation:

Put the numbers in place of the corresponding variables and do the arithmetic.

$\dfrac{-\left|1\dfrac{7}{8}+(-1)\right|}{2-(-4)}=\dfrac{-\dfrac{7}{8}}{6}=-\dfrac{7}{8\cdot6}=\boxed{-\dfrac{7}{48}}$

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o-na [289]

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Step-by-step explanation:

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2 years ago

Evaluate: 5–^2 = <br> WILL MARK AS BRAINLIEST

Elanso [62]

When you have a negative exponent, you move it to the other side of the fraction to make the exponent positive.

For example:

$x^{-2}$ or $\frac{x^{-2}}{1}=\frac{1}{x^2}$

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So:

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2 years ago

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What is the sum of the first five terms of a geometric series with a1=15 and r=1/3

Solnce55 [7]

Answer:

15, 5, 5/3, 5/9, 5/27

Step-by-step explanation:

Recall, that the general form of a geometric series is

a, ar, ar², ar³, .........

where a is the first term and r is the ratio

It is given that the first time is 15, hence a = 15

also given that ratio is 1/3

hence the first 5 terms are:

15, (15)(1/3), (15)(1/3)^2, (15)(1/3)^3, (15)(1/3)^4

simplifying each term gives

15, 5, 5/3, 5/9, 5/27

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2 years ago

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Solve the following system of equations. <br> 2x + y = 3 <br> x = 2y - 1

Shalnov [3]

2(2y-1)+y=3
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3 years ago

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Plz help I had no idea these things even existed...

GrogVix [38]

X/12=(2 1/3)/5 note that 2 1/3=7/3

x/12=(7/3)/5

x/12=7/15 multiply both sides by 12

x=84/15

x=28/5

x=56/10

x=5.6

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2 years ago