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3 years ago

7

A _____ has two-fold rotational symmetry.

1 answer:

Neko [114]3 years ago

5 0

The answer is D. line.

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Give an example of an irrational number that is greater than 0

Blababa [14]

2.1234492726349426935739 or any number with a really long decimal which cannot be turnt into a simple fraction

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4 years ago

There are 4 times as many alligators as crocodiles. If the total number of alligators and crocodiles is 40, how many alligators

Elena L [17]

10
40=4x
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7 0

3 years ago

PLEASE HELP ME!!! 25 points!!!

aliya0001 [1]

1. In algebra, like terms are terms that have the same variables and powers.

2. What is combining like terms? We call terms "like terms" if they have the same variable part.

3. Polynomials form a system similar to the system of integers, in that polynomials are closed under the operations of addition, subtraction, and multiplication. CLOSURE: Polynomials will be closed under an operation if the operation produces another polynomial. ... Polynomials are closed under subtraction.

Hope this helps

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3 years ago

Fill in the blanks to the picture above

Verdich [7]

The left side was cut out but x will be on top and 5 in the lower square. The last one is the answer.

3 0

3 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>

3 0

3 years ago