Simplify this expression: 3 ( d + 4 ) + -5 (2d + 1 )

Step-by-step explanation:

Evaluate:

7-7d

Solution steps

3×(d+4)+ -5×(2d+1)

3d+12-5×(2d+1)

3d+12-10d-5

-7d+12-5

-7d+7

EXPAND:

3×(d+4)+ -5×(2d+1)

3d+12-5×(2d+1)

3d+12-10d-5

-7d+12-5

-7d+7

FACTOR:

3×(d+4)+ -5×(2d+1)

-7d+7

7×(-d+1)

on a coordinate grid, point a is at (−4.0, −2.4) and point b is at (4.0, −2.4). point b is a reflection of point a across the –axis. input either a lowercase x or i think is the right awnser

step-by-step explanation:

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752