3 years ago

Someone please help me on this I'm unsure if my answer is correct

Mathematics

1 answer:

nirvana33 [79]3 years ago

4 0

Answer:

its correct

Step-by-step explanation:

i just did that one lol

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Answer:

What can u show pic

Step-by-step explanation:

3 0

3 years ago

Can someone please help, ty!!<br> Will mark brainliest!

shtirl [24]

Answer:

Step-by-step explanation:

The sum of the angles of a triangle is 180

26x+6 + 21x-1 +11x+1 = 180

Combine like terms

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58x = 180-6

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Divide by 58

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3 years ago

A factor in determining the usefulness of an examination as a measure of demonstrated ability is the amount of spread that occur

GarryVolchara [31]

Answer:

Step-by-step explanation:

From the information given :

The null hypothesis $H_o : \sigma = 60$

The alternative hypothesis $Ha : \sigma \neq 60$

Given that:

the sample size n = 21

sample standard deviation s = 68

population standard deviation σ = 60

a) The level of significance $\alpha =0.01$

b) The chi-square statistics can be calculated as:

$\bar X = \dfrac{(n-1)s^2}{\sigma^2}$

$\bar X = \dfrac{(21-1)68^2}{60^2}$

$\bar X = \dfrac{(20)4624}{3600}$

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The degree of freedom is :

= n - 1

= 21 - 1

= 20

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3 years ago

rosa want to buy snacks at the snack stand. Snacks cost $2.50 each. write and solve an inequality to find the number of snacks r

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Answer:

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3 years ago

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AlladinOne [14]

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4 years ago