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2 years ago

HURRYYYYY

Mathematics

2 answers:

bonufazy [111]2 years ago

3 0

Answer:

Triangle X Y Z is shown. Angle Y Z X is a right angle. The length of Y Z is 8 and the length of Z X is 6.

Use the diagram of triangle XYZ to answer the questions.

What is the length of side XY?

✔ 10

What is the value of sin(X)?

✔ 4/5

What is the value of cos(X)?

✔ 3/5

What is the value of tan(X)?

✔ 4/3

Step-by-step explanation:

here ya go!

Angelina_Jolie [31]2 years ago

3 0

Answer:

Use the diagram of triangle XYZ to answer the questions.

What is the length of side XY?

What is the value of sin(X)?

4/5

What is the value of cos(X)?

3/5

What is the value of tan(X)?

4/3

Step-by-step explanation:

got it right on edge

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The LB Company has long manufactured a light bulb with an average life of 5400 hours. Company researchers have recently develope

elena55 [62]

<h2><u>Answer with explanation</u>:</h2>

Let $\mu$ be the average life of light bulbs.

As per given , we have

Null hypothesis : $H_0 : \mu =5400$

Alternative hypothesis : $H_a : \mu >5400$

Since $H_a$ is right-tailed and population standard deviation is also known, so we perform right-tailed z-test.

Formula for Test statistic : $z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

where, n= sample size

$\overline{x}$ = sample mean

$\mu$ = Population mean

$\sigma$ =population standard deviation

For $n=95,\ \overline{x}=5483\ \&\ \sigma=500$ , we have

$z=\dfrac{5483-5400}{\dfrac{500}{\sqrt{95}}}=1.61796786124\approx1.6180$

Using z-value table , Critical one-tailed test value for 0.06 significance level :

$z_{0.06}=1.5548$

Decision : Since critical z value (1.5548) < test statistic (1.6180), so we reject the null hypothesis .

[We reject the null hypothesis when critical value is less than the test statistic value .]

Conclusion : We have enough evidence at 0.06 significance level to support the claim that the new filament yields a longer bulb life

8 0

3 years ago

It cost $36.75 for three tickets to visit the science center. It cost $51 for 4 tickets to visit the zoo. Which attraction will

Ber [7]

Find the cost for one ticket for the science center.
36.75 ÷ 3 = 12.25
Multiply the product with 12 to get the cost of 12 tickets.
12.25 × 12 = 147
Find the cost of 1 zoo ticket.
51 ÷ 4 = 12.75
Find the cost of 12 tickets by multiplying the product and 12
12.75 × 12 = $153
12 Science Center Tickets cost $147
12 zoo tickets cost $153

The Zoo costs more than the Science Center.

To find out how much more the Zoo costed, subtract 147 from 153.
153 - 147 = 6
The zoo only costs $6 more for 12 students.
So, you're answers are Zoo and $6

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3 years ago

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Georgia [21]

Step-by-step explanation:

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2 years ago

Read 2 more answers

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ipn [44]

330/11=30
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