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4 years ago

What is the slope of the line through (2,-2)and (9,3)

Mathematics

2 answers:

USPshnik [31]4 years ago

7 0

Slope=delta y/ delta x
delta y=5
delta x=7
slope=5/7

Answer:Slope of said line is 5/7

Romashka [77]4 years ago

7 0

(2, -2) (9,3)

2 equals X sub 1 -2 equals Y sub 1

9 equals X sub 2 3 equals Y sub 2

m= y sub 1 - y sub 2 over x sub 1 - x sub 2

3-(-2)/9-2)= 5/7

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Write each answer in Scientific notation 8x10^3 + 6.45 x 10^4

ELEN [110]

Answer:

7.25*10^4 let me know if it is wrong

Step-by-step explanation:

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3 years ago

What is the solution to he equation (y/y-4)-(4/y+4)=3^2/y^2-16

kicyunya [14]

Answer:

$y=\pm i \sqrt{7}$

Step-by-step explanation:

Given equation is $\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}$

Factor denominators then solve by making denominators equal

$\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}$

$\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}$

$\frac{y\left(y+4\right)-4\left(y-4\right)}{\left(y-4\right)\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}$

$y\left(y+4\right)-4\left(y-4\right)=9$

$y^2+4y-4y+16=9$

$y^2=9-16$

$y^2=-7$

take squar root of both sides

$y=\pm \sqrt{-7}$

$y=\pm i \sqrt{7}$

Hence final answer is $y=\pm i \sqrt{7}$ .

7 0

4 years ago

Identify the polynomial written in ascending order. 8x3+ 2x2− 6x − 11 2x2− 11 + 8x3− 6x −6x + 8x3− 11 + 2x2 −11 − 6x + 2x2+ 8x3

Delvig [45]

Ascending order...smallest to largest

-11 - 6x + 2x^2 + 8x^3 <==

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3 years ago

Read 2 more answers

P = a + b +c for b what the answer math

Elena L [17]

Answer:

p - a - c = b

Step-by-step explanation:

p = a + b + c

subtract a and b from both sides to isolate c

p - a - c = a - a + b

+ c - c

3 0

3 years ago

If a + b = -5 and x + y = -5, what is 6y + 6x - b - a

Novay_Z [31]

6(x +y) -(a +b) = 6(-5) -(-5)
= -25

5 0

3 years ago