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3 years ago

Whats the midpoint of (-2,7)

1 answer:

7 0

There isn't a midpoint when there's only one point. What's in the middle of one point? Unless you're talking about what number is directly in the middle of -2 and 7, at which it would be 3.

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Thomas goes to summer camp every year if his parents drive 155 miles to Camp to drop him off and then go back to pick him up in

prisoha [69]

I would say 465 since they go back and forth twice which is 155 x 3

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2 years ago

A pond has 150 fish and the population decreases by 8% each day. How many days before there are 30 fish

nlexa [21]

Answer:

19 days

Step-by-step explanation:

Given

$a = 150$ --- initial

$r = 8\%$ -- rate

Required

Days when the fish gets to 30

The function is exponential and as such it follows;

$y = ab^x$

Where x represents the number of days and y the number of fishes

Because the fishes decreases;

$b = 1 - r$

So, we have:

$b = 1 - 8\%$

Express as decimal

$b = 1 - 0.08$

$b = 0.92$

In $y = ab^x$

$a =150$

$y = 30$

$b = 0.92$

So, we have:

$30 = 150 * 0.92^x$

Divide both sides by 150

$0.2 = 0.92^x$

Take log of both sides

$log(0.2) = log(0.92^x)$

Apply law of logarithm

$log(0.2) = x\ log(0.92)$

Make x the subject

$x = \frac{log(0.2)}{log(0.92)}$

$x = \frac{-0.6990}{-0.0362}$

$x = 19.309$

$x \approx 19$

<em>Hence, it takes approximately 19 days</em>

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3 years ago

What are two decimals that are equivalent to 7.7

Elza [17]

7.70 and 7.700 they are all the same since the 7 tenths are still in its place

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3 years ago

There are 5 green balls, 2 orange balls, 4 purple balls, and 1 pink ball in a bucket. You pick 1 ball from

bagirrra123 [75]

B
The purple balls constitute 1/3 of the amount of balls there, so you’re that likely to pluck one out.

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3 years ago

Jada's grandparents started a saving account in 2010 , the rable shows the amount in the account each year

Vaselesa [24]

Answer: we need the table to solve this

Step-by-step explanation:

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2 years ago