How do I solve the whole thing? It doesn't make sense what so ever

Mathematics

1 answer:

Snezhnost [94]3 years ago

8 0

Any value of x makes this equation true or all real numbers

-2(3x+12) is the same this as -6x-24 when distributed
so it's -6x-24=-24-6x
her -6x just disappeared so she is wrong :)

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Donnel practiced the piano 3 hours longer than Marcus. Together they practiced the piano for 11 hours. How many hours did each b

andriy [413]

Here is the equation: $x+(x+3)=11$ ⇒ $x+x+3=11$

You need to get "x" by itself so minus 3 from each side

$x+x+3-3=11-3$ ⇒ $x+x=8$ ⇒ $2x=8$

Divide 8 by 2

$8$ ÷ $2=4$

x=4

So each 4 is equivalent to 4

Lets check:

$4+(4+3)=11$ ⇒ $4+4+3=11$ ⇒ $11=11$

So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7

4 0

3 years ago

GrogVix [38]

Answer:

B. y= (4)/(5)x + 2

Step-by-step explanation:

Use the slope-intercept form

y = m x + b to find the slope m and y-intercept b .

Slope:

y-intercept: ( 0 , − 2 )