Answer:
a=9
Step-by-step explanation:
a^3 = 729
Taking the cube root of each side
a^3 ^(1/3) = 729^ (1/3)
a = 9
B because distributive property goes like this:
a(b+c)
a(b)+a(c)
That's just an example though
Answer:
Step-by-step explanation:
let one diagonal=x
other diagonal=3x
area=1/2 (x±3x)=3/2 x²=54
x²=54×3/2=81
x=9 cm
3x=3×9=27
sum of diagonals=x+3x=4x=4×9=36 cm
There are 28 responses recorded.
There were 24 students polled.
The answers to these two questions are different because students could possibly be interested in more than one sport.
Answer:
B. 138.7
Step-by-step explanation:
Put the given number where the variable is and do the arithmetic.
h(x) = 5.7 -19x
h(-7) = 5.7 -19(-7) = 5.7 +133 = 138.7
