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stiv31 [10]
3 years ago
15

Consider the line x-2y=-1 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this l

ine?
Mathematics
1 answer:
Paul [167]3 years ago
5 0

Answer:

slope of line that is parallel is 1/2

slope of line that is perpendicular is -2

Step-by-step explanation:

parallel lines have the same slope

perpendicular lines have slopes that are opposite and reciprocal

x - 2y = -1

-2y = -x -1

y = 1/2x + 1/2

the coefficient of the 'x' term represents the slope

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Find the measure of angle A
otez555 [7]

Answer:

<A=35

Step-by-step explanation:

70+x+79+x+39=180

2x+188=180

2x=-8

x=-8/2 or -4

<A=x+39

<A=-4+39

<A=35

7 0
3 years ago
. Rotate 90 degrees- clockwise.
vfiekz [6]

Answer:

(4,-1), (2,-5), and (5,-5).

Step-by-step explanation:

There is a formula for rotating points about the origin counterclockwise; r90°(x,y) = (-y,x)

I never heard of a clockwise one before.

Maybe you can use this to help you find the formula for the clockwise rotation.

5 0
2 years ago
How do you solve this?
Sholpan [36]

40% of 60 is 24


To convert from percent to decimal, divide the percent without the percent symbol by  100.

so, 40% = 40/100 = 0.4

40% 60 is just 0.4*60 = 24

6 0
2 years ago
Read 2 more answers
PLEASEEE HELP! 3/8x+y=3 find the intercept and sketch the line.
just olya [345]
X-intercept is 8
Y-intercept is 3
8 0
3 years ago
B2-4b+4=0 using quadratic forumla
Ivan

Trying to factor by splitting the middle term   

Factoring <span> b2-4b+4</span> 
The first term is, <span> <span>b2</span> </span> its coefficient is <span> 1 </span>.
The middle term is, <span> -4b </span> its coefficient is <span> -4 </span>.
The last term, "the constant", is <span> +4 </span>

Step-1 : Multiply the coefficient of the first term by the constant <span>  1 • 4 = 4</span> 

Step-2 : Find two factors of  4  whose sum equals the coefficient of the middle term, which is  <span> -4 </span>.
<span><span>     </span></span>

<span><span>-4   +   -1   =   -5</span><span>     -2   +   -2   =   -4   That's it</span></span>


Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -2  and  -2 
                     <span>b2 - 2b</span> - 2b - 4

Step-4 : Add up the first 2 terms, pulling out like factors :
                    b • (b-2)
              Add up the last 2 terms, pulling out common factors :
                    2 • (b-2)
Step-5 : Add up the four terms of step 4 :
                    (b-2)  •  (b-2)
             Which is the desired factorization

8 0
3 years ago
Read 2 more answers
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