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Pavlova-9 [17]
3 years ago
9

Help!!!Lots of points!!

Mathematics
2 answers:
sveticcg [70]3 years ago
6 0
I think means didn’t make any mistakes
melamori03 [73]3 years ago
6 0
Hey there! 

Merna did not make a mistake. She completed each step correctly using the appropriate rules and properties. 
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Line E passes through the points (2, 3) and (4, -3). What is the slope of a line perpendicular to line E?
lilavasa [31]
\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
%  (a,b)
&&(~ 2 &,& 3~) 
%  (c,d)
&&(~ 4 &,& -3~)
\end{array}
\\\\\\
% slope  = m
slope =  m\implies 
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-3-3}{4-2}\implies \cfrac{-6}{2}\implies \cfrac{-3}{1}

now, a line perpendicular to that one, will have a "negative reciprocal" slope, thus

\bf \textit{perpendicular, negative-reciprocal slope for}\quad \cfrac{-3}{1}\\\\
negative\implies  +\cfrac{3}{ 1}\qquad reciprocal\implies +\cfrac{ 1}{3}\implies \cfrac{1}{3}
7 0
3 years ago
The question is Stephen read for 34 minutes on Monday and 45 minutes on Tuesday. Use breaking apart to find how many minutes Ste
user100 [1]
Breaking apart means that you just take the tens from each number, and the ones from each number, then add them up.


The tens from your numbers are:
30 from 34
40 from 45

The ones from your numbers are:
4 from 34
5 from 45

Now, you have to add up the tens and ones separately.
30 + 40 = 70
4 + 5 = 9

Finally, you add up those 2 numbers that you got- 70 and 9

The answer: Stephen read for 79 minutes total.
7 0
3 years ago
Help pls also an answer ​
Schach [20]

84.5-19.7= 67.8

67.8÷6= 11.3

11.3 yards per curtain

4 0
3 years ago
Read 2 more answers
How many different arrangements of 55 letters can be formed if the first letter must be w or k​ (repeats of letters are​ allowed
defon
If the remaining 4 letters can be anything, you have 2*26^4 = 913,952 possible 5-letter ham radio call signs.
3 0
3 years ago
Use a scientific calculator or unit circle to convert the polar form of the complex number to its equivalent rectangular form.
GuDViN [60]
I assume 3.14 is meant to represent π. So x=32cos(π/3)=16 and y=32sin(π/3)=16√3=27.7128 approx.
If we take 3.14 directly (radians), then we get x=16.0147 and y=27.7043 approx.
5 0
3 years ago
Read 2 more answers
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