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Mathematics

2 answers:

IRISSAK [1]4 years ago

7 0

Answer:

the answer would be D.

Step-by-step explanation:

while the x goes up by one, the y goes down by three

bogdanovich [222]4 years ago

7 0

Answer:

D) a=20 because the rate of change is -3

Step-by-step explanation:

As x increases by 1, y decreases by 3

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Select the graph of the equation below.<br> y= -1/4x^2+1

V125BC [204]

Answer:

Step-by-step explanation:

Since you have the different parabolas there, the simplest way to determine which one is, is replacing x as 0 and then y as 0

y = -1/4x^2 + 1

When x = 0

y = -1/4 (0)^2 +1 = 1

When y = 0

0 = -1/4x^2 +1

1/4 x^2 = 1

x^2 = 4

x = + 2

x = - 2

The parabola with points:

(0,1); (-2,0) and (2,0) is a.

4 0

4 years ago

Y=-4/3x+6; y=2 <br> I need that to be done in subsitution or elimination

Mrrafil [7]

For substitution it would be -4/3 (2) +6 and then you solve!

3 0

3 years ago

Read 2 more answers

Help! Absolute value equations

Darina [25.2K]

Answer:

k = -5 , k= -2
m= -21 , m=5

Step-by-step explanation:

$3=\left|2k+7\right|\\\\\mathrm{Switch\:sides}\\\left|2k+7\right|=3\\\\\mathrm{Apply\:absolute\:rule}:\quad \\\mathrm{If}\:|u|\:=\:a,\:a>0\:\mathrm{then}\:u\:=\:a\:\quad \mathrm{or}\quad \:u\:=\:-a\\\\2k+7=-3\quad \mathrm{or}\quad \:2k+7=3\\\\2k+7=-3\quad :\quad k=-5\\\\2k+7=3\quad :\quad k=-2\\\\\mathrm{Combine\:Solutions:}\\k=-5\quad \mathrm{or}\quad \:k=-2$

$3\left|m+8\right|=39\\\mathrm{Divide\:both\:sides\:by\:}3\\\frac{3\left|m+8\right|}{3}=\frac{39}{3}\\\\Simplify\\\left|m+8\right|=13\\\\\mathrm{Apply\:absolute\:rule}:\quad \\\mathrm{If}\:|u|\:=\:a,\:a>0\:\mathrm{then}\:u\:=\:a\:\quad \mathrm{or}\quad \:u\:=\:-a\\\\m+8=-13\quad \mathrm{or}\quad \:m+8=13\\\\m+8=-13\quad :\quad m=-21\\m+8=13\quad :\quad m=5\\\\\mathrm{Combine\:Solutions:}\\m=-21\quad \mathrm{or}\quad \:m=5$