How do i rewrite 21+42÷7×3 with a set of parentheses to equal 3

(21 + 42) / (7 x 3)

Step-by-step explanation:

Using PEMDAS work on the first parentheses. 21 plus 42 equals 63. 7 times 3 equals 21. Now you have 63 divided by 21, which equals 3.

(21 + 42) / (7 x 3)

63 / (7 x 3)

63 / 21

3

2.56 is the width of the garden

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