A student is finding the measures of the angles in a triangle that have the ratio 4:4:7. Find the mistake and correct it.

Mathematics

1 answer:

7nadin3 [17]2 years ago

8 0

suppose 4:4:7 be 4x, 4x, 7x

or, 15x = 180°

or, X = 180/15

or, X = 12

therefore,

4x = 4x12= 48

4x= 4x12= 48

7x= 7x12= 84

so if you plus all of them you get 180

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A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan

Mademuasel [1]

Answer: $H_0:\mu=40$

$H_0:\neq40$

Step-by-step explanation:

A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
An alternative hypothesis says that there is a statistical significance between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. $\mu=40$ , since it has equals sign so we take this as null hypothesis.

Claim 2. : Mean age of online dating service users is not 40 years.

$\mu\neq40$

⇒ Null Hypothesis : $H_0:\mu=40$

Alternative hypothesis : $H_0:\neq40$

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3 years ago

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Vika [28.1K]

The balance B at the end of time t is given by
B = P +Prt
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2250/(6000*12.5) = r . . . . . . . . . .divide by the coefficient of r
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Clint earned 3% annual simple interest on his savings.

7 0

3 years ago

Read 2 more answers

Please solve this <br>with each step

grandymaker [24]

Step-by-step explanation:

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