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3 years ago

What is the value of the missing angle

Mathematics

2 answers:

SSSSS [86.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

First know that one whole line that is open is 180 degrees all i did what add 30 to 150 and i got 180

or you you can do what the other person said subtraction.

blondinia [14]3 years ago

6 0

Answer:

30°

Step-by-step explanation:

Since a straight line is 180°, you have to subtract 180 by 150. This will give you 30

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Is the number 0.333333 rational or irrational

shtirl [24]

Answer:

Rational

please put me as brainliest

Step-by-step explanation:

Here 3 is recurring , so from statement 1) 0.3333 or 1/3 is a rational number. And also 0.3333 is non-terminating as the decimal is not ending or the remainder for 1/3 is not zero

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3 years ago

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What is the equation of a line that passes through the point (-3, 1) and is parallel to a line with a slope of 2?

denis-greek [22]

Answer:

D. 2x + 7

Step-by-step explanation:

Use the point given, (-3, 1), and put it into the point-slope formula.

y - 1 = m(x+3)

The m, or the slope, is still blank. When you want a line parallel to a certain slope, the slope remains the same. Therefore, you plug in 2 for m:

y - 1 = 2(x+3)

y - 1 = 2x + 6

y = 2x + 7

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3 years ago

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Solve the following equations for y. 9. 2y + 3= 2x

Dahasolnce [82]

Answer:

y = x − 3 /2

Step-by-step explanation:

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3 years ago

A normal curve with mean = 25 has an area of .3531 between 25 and 34. What is the standard deviation for this normal curve?

Naddik [55]

Answer:

The desviation is 8 4/7 or 8.571

Step-by-step explanation:

The conversion for any variable X to a standard z is

$Z=\frac{X-\[Mu]}\\{\[Sigma]}$

where mu is the mean and sigma de desviation

You can find the value of Z whith the tables of the accumulated probability function. The accumulated probability for the mean is 0.5 .Remenber that the accumlated probability function represent the area at the left of an abscissa. Then

0.5+0.3531=0.8531

Acording to the accumulated probability function table, a Z=1.05 has an area of 0.8531 at its left.

Now it is only solving the equation

$\[Sigma]=\frac{X-\[Mu]}{Z}$