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solniwko [45]
3 years ago
14

OMG!!! I forgot what Order of Operations were! I need help....

Mathematics
2 answers:
SpyIntel [72]3 years ago
8 0
Think of PEMDAS, or Please Excuse My Dear Aunt Sally. Which is <span>Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction in that order.</span>
prisoha [69]3 years ago
4 0
Think of PEMDAS, or Please Excuse My Dear Aunt Sally. Which is Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction in that order.
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Find the point P that is 2/5 of the way from A to B on the directed line segment AB
Kruka [31]

The point P(–4, 4) that is \frac{2}{5} of the way from A to B on the directed line segment AB.

Solution:

The points of the line segment are A(–8, –2) and B(6, 19).

P is the point that bisect the line segment in \frac{2}{5}.

So, m = 2 and n = 5.

x_1=-8, y_1=-2, x_2=6, y_2=19

By section formula:

$P(x, y)=\left(\frac{mx_2+nx_1}{m+n}, \frac{my_2+ny_1}{m+n}\right)

$P(x, y)=\left(\frac{2\times 6+5\times (-8)}{2+5}, \frac{2\times 19+5\times (-2)}{2+5}\right)

$P(x, y)=\left(\frac{12-40}{7}, \frac{38-10}{7}\right)

$P(x, y)=\left(\frac{-28}{7}, \frac{28}{7}\right)

P(x, y) = (–4, 4)

Hence the point P(–4, 4) that is \frac{2}{5} of the way from A to B on the directed line segment AB.

4 0
3 years ago
A sample of values has a mean of 500.0 and a standard deviation of 50.0. use the range rule of thumb to find estimates for the m
leonid [27]
<span>The Range Rule of Thumb says that the range is about four times the standard deviation. (i.e. two standard deviations to the left and two standard deviations to the right of the mean).

Given that the mean is 500 and the standard deviation is 50, then

The minimum and the maximum "usual" values are given by

500\pm2(50)=500\pm100 \\  \\ =(500-100,\ 500+100)=(400,\ 600)

Therefore, the minimun "usual" value is 400 while the maximum "usual" value is 600.
</span>
7 0
3 years ago
1/3=?/24 <br>Which number is missing to make the equation true?​
Inessa [10]

Answer:

8

Step-by-step explanation:

7 0
2 years ago
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What additional information is needed to prove the triangles are congruent by the SAS Postulate?
Kitty [74]
You need to know the length of two sides and the degree of one angle.
7 0
3 years ago
What line that passes through the points (-2, 1) and (2, 1).?
bogdanovich [222]
The equation of the line passing through those two points is y=0x+1
7 0
2 years ago
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