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3 years ago

Can you help me please?

Mathematics

1 answer:

lyudmila [28]3 years ago

7 0

The lines are parallel by the alternate exterior angle converse theorem

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X^2-5x+6=0 quadratic form

Olenka [21]

Answer:

x = 3,2

Step-by-step explanation:

solve for x by finding a,b,c and then apply the quadratic formula.

7 0

3 years ago

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I WILL GIVE YOU LOTS OF Points

saw5 [17]

Answer:

Step-by-step explanation:

7^2 + 4^2 = $\sqrt{65\\$

assume it is a triangle and x is the hypotenuse and use Pythagorean theorem

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4 years ago

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In ΔKLM, the measure of ∠M=90°, LK = 25, KM = 7, and ML = 24. What ratio represents the cosine of ∠L?

olga55 [171]

Answer:

24/25

Step-by-step explanation:

cosin=cah adjacent over hypotenuse

8 0

4 years ago

Help

nataly862011 [7]

Answer:

A. Women were not allowed to be journalists.

Step-by-step explanation:

It’s most definitely not C or D. I did some research for answers A and B and A is correct.

** I hate to ask, but if you could please mark me as brainliest, it would help me level up!

5 0

3 years ago

Read 2 more answers

A simple random sample of 144 items resulted in a sample mean of 1250.25 and a standard deviation of 480. Which of the following

Lerok [7]

Answer:

Correct formula for a 99% confidence interval for the population mean = $[xbar - 2.61138*\frac{480}{\sqrt{144} } , xbar + 2.61138*\frac{480}{\sqrt{144} }]$

Step-by-step explanation:

We are provided a simple random sample of 144 items of which sample mean, xbar = 1250.25 and Standard Deviation, s = 480.

We know that $\frac{xbar - \mu}{\frac{s}{\sqrt{n} } }$ follows $t_n_-_1$ i.e.;

$\frac{1250.25 - \mu}{\frac{480}{\sqrt{144} } }$ follows $t_1_4_3$

So, 99% confidence interval is given by ;

P(-2.61138 < $t_1_4_3$ < 2.61138) = 0.99 {because at 143 degree of freedom t table

gives critical value of 2.61138 at 0.5% level}

Now, after further solving this we get,

99% confidence interval for the population mean =

$[xbar - 2.61138*\frac{480}{\sqrt{144} } , xbar + 2.61138*\frac{480}{\sqrt{144} }]$

Since, in the question options are not given so this must be the correct formula for calculating 99% confidence interval for the population mean.

6 0

4 years ago