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3 years ago

I need to know how to find x on this triangle

Mathematics

1 answer:

FromTheMoon [43]3 years ago

7 0

180 - 120 = 60
x = 60/2 = 30
8y = 40
y = 40/8
y = 5

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Answer:

62.8/20

Step-by-step explanation:

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3 years ago

Law of radicals

andrey2020 [161]

Answer:

1) $\sqrt{x^7}=x^{\frac{7}{2}$

2) $\sqrt[3]{y^5}=y^{\frac{5}{3}$

3) $\sqrt[5]{a^{12}}=a^{\frac{12}{5} }$

4) $\sqrt[4]{z^{9}}=z^\frac{9}{4}$

Step-by-step explanation:

1) $\sqrt{x^7}$

We know that $\sqrt{x}=x^{\frac{1}{2}$

So, $\sqrt{x^7}=x^{\frac{7}{2}$

2) $\sqrt[3]{y^5}$

We know that $\sqrt[3]{x}=x^{\frac{1}{3}$

So, $\sqrt[3]{y^5}=y^{\frac{5}{3}$

3) $\sqrt[5]{a^{12}}$

We know that $\sqrt[5]{x}=x^{\frac{1}{5}$

So, $\sqrt[5]{a^{12}}=a^{\frac{12}{5} }$

4) $\sqrt[4]{z^{9}}$

We know that $\sqrt[4]{x}=x^{\frac{1}{4}$

So, $\sqrt[4]{z^{9}}=z^\frac{9}{4}$

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3 years ago

40 percent of cd copies in a store and you have 80 copies how many did the store have

AURORKA [14]

Answer:

120

Step-by-step explanation:

40% of 80 is 40 so add the 80+40=120.

Hope it's correct.

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3 years ago

The mean salary for a new teacher in your town is $48,000. You believe it is higher for new teachers in a neighboring town. Stat

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Answer:

Step-by-step explanation:

Given that the mean salary for a new teacher in your town is $48,000

You believe it is higher for new teachers in a neighboring town.

So to prove or disprove your claim you have to show statistical evidence.

For that hypothesis testing is necessary.

You must conduct a hypothesis test for comparing the mean of salary of new teacher with neighbouring places

The hypotheses wouldbe

$H_0: \mu = 48000\\H_1: \mu >48000$

where mu is the average for neighbouring states.

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3 years ago