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2 years ago

Please help me with these two questions!! show work too!

Mathematics

1 answer:

const2013 [10]2 years ago

4 0

Answer:

x 37 y 30

Step-by-step explanation:

hopes it helps yo

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If XYZ measures 45°, what is the measure of ?

ololo11 [35]

D. 45 and can you answer my history please ASAP

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2 years ago

What is the difference between Independent and dependent events?

JulijaS [17]

The Answer Is C

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2 years ago

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Solve the equation 4(3-2x)=22

jeka94

4(3-2x)=22
4(3) - 4(2x) = 22
12 - 8x = 22
8x = 12 - 22
8x = -10
x = -10/8 = -5/4
or
x = -1.25

8 0

2 years ago

Alona [7]

Answer:

The lower limit is 75.04

The upper limit is 78.96

Step-by-step explanation:

From the question we are told that

The sample size is $n = 25$

The sample mean is $\= x = 77$

The standard deviation is $\sigma = 5$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

The critical value for $\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96* \frac{5 }{\sqrt{25} }$

=> $E = 1.96$

The 95% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $77 - 1.96 < \mu < 77 + 1.96$

=> $75.04 < \mu < 78.96$

7 0

2 years ago

What function is graphed below?

tester [92]

The answer for the exercise shown above is the first option, which is:
 f(x)=log(x-3)
The explanation is shown below:
If you substitute the x in the function for values, you will obtain the graph attached above. As you can see on the mentioned graph, when the variable x has the value 4, the value y is 0. Therefore, you have:
 f(x)=log(x-3)
 f(x)=log(4-3)
 f(x)=log(1)
 f(x)=0

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2 years ago

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