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3 years ago

Are the expressions -0.5(3x + 5) and -1.5x + 2.5 equivalent? Explain why or why not.

1 answer:

5 0

No, they are not equivalent because if you distribute the -0.5 in the expression -0.5(3x+5) you will get -1.5x-2.5 which is not the same as -1.5+2.5

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allochka39001 [22]

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Step-by-step explanation:

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3 years ago

What is lim x→-3 sqrt x^2-8

vitfil [10]

If the -8 is under the square root, then...

$\displaystyle L = \lim_{x\to -3} \sqrt{x^2-8}\\\\L = \sqrt{(-3)^2-8}\\\\L = \sqrt{9-8}\\\\L = \sqrt{1}\\\\L = 1\\\\$

If the -8 is not under the square root, then...

$\displaystyle L = \lim_{x\to -3} \sqrt{x^2}-8\\\\L = \sqrt{(-3)^2}-8\\\\L = \sqrt{9}-8\\\\L = 3-8\\\\L = -5$

Either way, we replace x with -3 and simplify.

For more information, refer to the direct substitution rule for limits.

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1 year ago

In 1771, misfortune struck Euler again, when a cataract in his left eye robbed him of his sight entirely. Incredibly, this did n

nika2105 [10]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

what percentage of people choose baseball or soccer as their favorite sport there is a circle 25% play basketball 35% play footb

erma4kov [3.2K]

Answer:

35% chose baseball or soccer

Step-by-step explanation:

baseball or soccer = 20% + 15% = 35%

_____

The categories add to 100%, so are mutually exclusive, as you expect when they are "favorite sport" categories. Hence the union of two of them will be their sum. (Otherwise, you'd have to subtract the amount by which the categories overlap.)

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3 years ago

The book fair sells 185 books and 58 posters how many more books than posters did they sell

PtichkaEL [24]

Answer:

127 more posters than books.

Step-by-step explanation:

185-58=127

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3 years ago