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kykrilka [37]
3 years ago
15

Can someone pls help me solve this .

Mathematics
1 answer:
ASHA 777 [7]3 years ago
6 0
Divide and multiply the numbers :)
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What is this math problem<br> -1/12 - (-3/4)
Ivan

Answer:

-1/12 - (-3/4)

= -1/12 + 3/4

= (-1+9)/12

= 8/12

=2/3

3 0
3 years ago
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimeters,
tiny-mole [99]

Answer:

Probability that the sample mean would be greater than 141.4 millimetres is 0.3594.

Step-by-step explanation:

We are given that Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimetres, and a standard deviation of 7.

A random sample of 39 steel bolts is selected.

Let \bar X = <u><em>sample mean diameter</em></u>

The z score probability distribution for sample mean is given by;

                            Z  =  \frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} }  } }  ~ N(0,1)

where, \mu = population mean diameter = 141 millimetres

           \sigma = standard deviation = 7 millimetres

           n = sample of steel bolts = 39

Now, Percentage the sample mean would be greater than 141.4 millimetres is given by = P(\bar X > 141.4 millimetres)

      P(\bar X > 141.4) = P( \frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} }  } } > \frac{141.4-141}{\frac{7}{\sqrt{39} }  } } ) = P(Z > 0.36) = 1 - P(Z \leq 0.36)

                                                            = 1 - 0.6406 = <u>0.3594</u>

The above probability is calculated by looking at the value of x = 0.36 in the z table which has an area of 0.6406.

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=9z%20%20%2B%206j%20%20%3D%2098" id="TexFormula1" title="9z + 6j = 98" alt="9z + 6j = 98" a
WITCHER [35]

Answer:

Step-by-step explanation:

What variable are you solving for?

4 0
3 years ago
The domain of a composite function (fog)(x) is the set of those inputs x in the domain of g for which g(x) is in the domain of f
Gelneren [198K]
True, the correct answer is true.
4 0
2 years ago
Which could be the measure of <br> A.) 38<br> B.) 42<br> C.) 44<br> D.) 52
vichka [17]
Well you can check what type of angle it is! like depending on how it is slouched like a right angle is 90° for example.
3 0
3 years ago
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