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3 years ago

A cockatoo costs $159.95. A cockatiel costs $48.85. What is the difference in price?

Mathematics

2 answers:

k0ka [10]3 years ago

8 0

Answer:

111.1

use subtraction

Naily [24]3 years ago

6 0

111.1 is the right Answer

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GEOMETRY- FIND POLYGON AREA

Dvinal [7]

Answer:

Step-by-step explanation:

The area of a regular polygon is

$A=\frac{1}{2}ap$ where a is the apothem and p is the perimeter. Perimeter is simple: just count the number of sides the polygon has and multiply it by 3 (the length of one side).

p = 3(9) is 27 inches for the perimeter.

We have what we need now to find the area:

$A=\frac{1}{2}(4.1)(27)$ and

$A=\frac{1}{2}( 110.7)$ so

A = 55.35 square inches

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2 years ago

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.6

sergey [27]

Answer:

Below.

= 99.7%

= 100 - 99.7%/2

= 0.3/2

= 0.15%

100% - 0.15%

= 99.85%

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3 years ago

Please help see attached file

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Answer:

Package A: 492in^2

Package B: 404in^2

4 0

3 years ago

Define an equivalence relation P on Z as follows: Let x,y e Z ; xPy if and only if ke Z s.t. x - y = 2k Show how the reflexive p

defon

Answer with Step-by-step explanation:

We are given that an equivalence relation P on Z as

Let $x,y\in Z$

$xPy$ if and only if $k\in Z$ such that x-y=2k.

We have to show that how the reflexive property and symmetric property of an equivalence relations hold for P on Z.

We know that reflexive property

a is related to a by given relations.

If xPax then we get

$x-x=0=2(0)$

Where k=0 and 0 belongs to integers.

Hence, the relation satisfied reflexive property.

Symmetric property :If a is related to b then b is related to b.

If x and y is related by the relation

$x-y=2k$ where k is any integer

$y-x=-2k=2(-k)$

k belongs to integers.

Hence, relation satisfied symmetric property.

7 0

3 years ago

In 1994, the General Social Survey included a question that asked its participants if they felt that nuclear power plants were e

Anna71 [15]

Answer:

Value of the test statistic for this problem = -3.74

Step-by-step explanation:

Here

the sample size n = 1263

and the x = 565

So, the p' -value = 565/1263 = 0.4473

As per the test statistics formula, z value will be evaluated

z = (0.4473-p)/sqrt {p(1-p)/n}

Let us say that p = 0.5

Substituting the given value in above equation, we get -

z = (0.4473-0.5)/sqrt {0.5(1-0.5)/1263}

z = -3.74

4 0

3 years ago

A cockatoo costs $159.95. A cockatiel costs $48.85. What is the difference in price?​

A cockatoo costs $159.95. A cockatiel costs $48.85. What is the difference in price?