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3 years ago

Pls help!!!!! 10 points

Mathematics

1 answer:

larisa [96]3 years ago

7 0

Ggjahshddhdhgdydrshhdhdjdjdd

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I need major help I do not understand this someone please help

galben [10]

Answer:

Well the sides have to be even so

2x+4=3x-10

so x would have to be equal to 14

4 0

3 years ago

Gribbles are small, pale white, marine worms that bore through wood. While sometimes considered a pest since they can wreck wood

Stells [14]

<u>Answer with explanation:</u>

As per given , we have

A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.

i.e. n= 50

Degree of freedom = n-1=49

$\overline{x}=3.1\ mm$

$s=0.72\ mm$

The point estimate of the population mean is equals to the sample mean.

i.e. The best estimate for the length of gribbles= 3.1 mm

Also, population standard deviation is unknown , then the confidence interval would be :

$E=t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :

$t_{0.05/2, 49}=t_{0.025, 49}= 2.010$

Now, Margin of error : $E=(2.010)\dfrac{0.72}{\sqrt{50}}$

$=0.204664986747\approx0.20$

95% confidence interval : $(\overline{x}-E,\ \overline{x}+E)$

$i.e.\ (3.1-0.20, 3.1+0.20)=(2.90,\ 3.30)$

3 0

4 years ago

The dot plots show the salaries for the employees at two small companies before a new company director is hired at each company.

Mice21 [21]

Answer:

Step-by-step explanation:

Its B Becuase idk tbh i need it too :(

4 0

3 years ago

Please help! 20 Points!

Ainat [17]

A (-4,5)
B (-3,1)
C (-5,2)

A'(3,1)
B'(2,5)
C'(4,4)

3 0

3 years ago

This quiz is due in a hour I'll up the points to 25

Irina-Kira [14]

Answer:

The sin A expressed in ratio form is $\frac{\sqrt{6} }{4}$

Step-by-step explanation:

From the given right angled triangle diagram, sin A is calculated as follows;

$sin \ A = \frac{Opp}{hypo} \\\\sin \ A = \frac{2\sqrt{6} }{8} \\\\sin \ A = \frac{\sqrt{6} }{4}$

Therefore, the sin A expressed in ratio form is $\frac{\sqrt{6} }{4}$

3 0

3 years ago