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cluponka [151]
3 years ago
12

Find the slope of the line through (–9, –10) and (–2, –5). A. –five-sevenths B. seven-fifths C. five-sevenths D. –negative seven

-fifths (please help much aprecciated)
Mathematics
1 answer:
vredina [299]3 years ago
8 0

Answer:

C 5/7

Step-by-step explanation:

We can find the slope of a line using

m = (y2-y1)/(x2-x1)

   = (-5 - -10) /(-2 - -9)

   = (-5 +10)/(-2+9)

   5/7

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It took 2 hours to hike 4 2/3 miles what is the average speed in miles per hour
snow_lady [41]

2 1/3 an hour.

4 2/3 DIVIDED BY 2

=2 1/3

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3 years ago
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A triangle has side lengths of 20 cm, 99 cm, and 108 cm. Classify it as acute, obtuse, or right.
vagabundo [1.1K]
Okay lets go down the list. It's not right since 20²+99²=10201 √10201=101 and you said a is wrong it's have to be B. obtuse
8 0
3 years ago
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Nikitich [7]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
Identify all of the root(s) of g(x) = (x2 + 3x - 4)(x2 - 4x + 29)
vichka [17]

Answer:

x=-4,1,2+5i,2-5i

Step-by-step explanation:

Given is an algebraic expression g(x) as product of two functions.

Hence solutions will be the combined solutions of two quadratic products

g(x) = (x^2 + 3x - 4)(x^2 - 4x + 29)\\

I expression can be factorised as

(x+4)(x-1)

Hence one set of solutions are

x=-4,1

Next quadratic we cannot factorize

and hence use formulae

x=\frac{4+/-\sqrt{16-116} }{2} =2+5i, 2-5i

5 0
3 years ago
Factorise 2xsquared X 7x +3
Monica [59]

Answer:

 (-2x - 1) • (x + 3)

Step-by-step explanation:

3.2     Factoring  2x2 + 7x + 3

The first term is,  2x2  its coefficient is  2 .

The middle term is,  +7x  its coefficient is  7 .

The last term, "the constant", is  +3

Step-1 : Multiply the coefficient of the first term by the constant   2 • 3 = 6

Step-2 : Find two factors of  6  whose sum equals the coefficient of the middle term, which is   7 .

     -6    +    -1    =    -7

     -3    +    -2    =    -5

     -2    +    -3    =    -5

     -1    +    -6    =    -7

     1    +    6    =    7    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  1  and  6

                    2x2 + 1x + 6x + 3

Step-4 : Add up the first 2 terms, pulling out like factors :

                   x • (2x+1)

             Add up the last 2 terms, pulling out common factors :

                   3 • (2x+1)

Step-5 : Add up the four terms of step 4 :

                   (x+3)  •  (2x+1)

            Which is the desired factorization

5 0
2 years ago
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