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Thepotemich [5.8K]
2 years ago
9

Please help!

Mathematics
1 answer:
dexar [7]2 years ago
3 0

Answer: 1/9

Step-by-step explanation:

You have 3 possible options. The probablility of the spinner landing on 3 is 1/3. The probability of it landing on 2 is also 1/3. For them to happen together, you multiply them. 1/3 * 1/3 = 1/9.

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Savatey [412]

Answer:

sorry

Step-by-step explanation:

plz send full question

7 0
3 years ago
Does a regular pentagon tessellate and why​
mariarad [96]

Answer:

No, a regular pentagon does not tessellate.

In a tessellation, all the angles at a point have to add to 360 degrees, as this means there is no overlap, nor are there gaps. To find the interior angle sum of a pentagon, we use the following formula:

(n-2)*180 (where n is the number of sides)

We plug in the number of sides (5) and get:

Angle sum = (5–2)*180

Angle sum = 3*180

Angle sum = 540

Regular pentagons have equal sides and equal angles, so to find the size of the interior angle of a pentagon, we divide the angle sum by 5 and get 108 degrees for every angle.

As I said before, the angles at a point need to add up to 360, so we need to know if 108 divides evenly into 360. If it does, the shape tessellates, and, if it doesn’t, the shape does not.

360/108 = 3.33333…

This means that a regular pentagon does not tessellate.

Hope this helps!

8 0
3 years ago
How do i do question 3 a b c
viva [34]

Answer:

a) 240°

b) 30°

c) 225°

Step-by-step explanation:

To solve these equations you have to use the inverse of the given trigonometric functions. The inverse of <em>sin</em> is <em>arcsin</em>, and the inverse of <em>tan </em>is <em>arctan. </em>Instead of giving an angle, what is its sine?, the question is: given a sine,  what is the angle?.

a)

sin(θ) = -√3/2

θ = arcsin(-√3/2)

θ = -60°

Given the periodicity of sine function, sin(-60°) is equivalent to sin(240°) (-60+180) and sin(300°) (-60+360).

b)

tan(θ) = 1/√3

θ = arctan(1/√3)

θ = 30°

c)

csc means cosecant, by definition:

csc(θ) = 1/sin(θ)

csc(θ) = -√2

1/sin(θ) = -√2

sin(θ) = -1/√2

θ = arcsin(-1/√2)

θ = -45° or 360-45 = 315° or 180+45 = 225°

3 0
3 years ago
A company that packages salted and unsalted mixed nuts received a complaint that claimed that the company’s salted packages cont
Eduardwww [97]

Answer:

H_0 : \mu_1 - \mu_2 = 0

H_a : \mu_1 - \mu_2 \ne 0

Step-by-step explanation:

Let the salted package be represented with 1 and the unsalted, 2.

So:

\mu_1: Mean of salted package

\mu_2: Mean of unsalted package

Considering the given options, the null hypothesis is that which contains =.

So, the null hypothesis is:

H_0 : \mu_1 - \mu_2 = 0

The opposite of = is \ne. So, the alternate hypothesis, is that which contains \ne

So, the alternate hypothesis is:

H_a : \mu_1 - \mu_2 \ne 0

4 0
2 years ago
Does it matter what interval you use when you find the rate of change of a proportional relationship
LekaFEV [45]
Proportions are the comparison of two equal ratios. Therefore, proportional relationships are relationships between two equal ratios.  So yes, it does matter.. I<span>nterval: all the numbers between two given numbers.</span>
7 0
3 years ago
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