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3 years ago

13

PLEASE HELP 20 POINTS One day, River writes down the numbers $1,$ $2,$ $\dots,$ $999.$ What is the sum of all the digits that Ri

ver wrote down?

1 answer:

Temka [501]3 years ago

6 0

Answer:

LOL this is from AOPS

Step-by-step explanation:

LOL tryna cheat out here

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Simplify by combining like terms. <br> 12+5t−4+15t+1

quester [9]

Answer:

9+20t

Step-by-step explanation:

Look at the terms and see which has t and which is a number when you see like terms, add them or subtract them together to get like terms.

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3 years ago

Simplify. (-6x^2 + 2y - 1) + (2x^2-5y + 3) A) -4x^2 + 3y -2 B) -4x^2 - 3y - 2 C) -4x^2 + 3y +2 D) -4x^2 -3y +2

Rasek [7]

Combine like terms

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3 years ago

Find the minimum sample size when we want to construct a 90% confidence interval on the population proportion for the support of

kogti [31]

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3 years ago

The price of a shirt is marked down from $12.50 to $10,00. What is the percent decrease of the shirt?

choli [55]

Answer: 20%.

Step-by-step explanation:

Given, The price of a shirt is marked down from $12.50 to $10.00.

Previous price = $12.50

New price = $10.00

Change in price = Previous price - New price

= $12.50 - $10.00

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Now, the percent decrease of the shirt = $\dfrac{\text{Change in price}}{\text{Prevoius price}}\times100$

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Hence, the percent decrease of the shirt = 20%.

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3 years ago

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Rashid [163]

Answer:

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Step-by-step explanation:

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