The table shows the number of boys and girls that have black blonde brown or red hair color.

black* (boys) 4 (girls) 5
blonde* (boys) 4 (girls) 6
brown* (boys) 10 (girls) 8
red* (boys) 2 (girls) 1

what is the probability that a student has black hair? (round to nearest hundredth)
a) 0.23
b) 0.29
c) 0.46
d) 0.52

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong

To factor 4x2-25, you can first rewrite the expression as:

Consider the function f left parenthesis x right parenthesis equals 4 x squared minus 3 x minus 1f(x)=4x2−3x−1 and complete parts (a) through (c). (a) find f left parenthesis a plus h right parenthesis f(a+h); (b) find startfraction f left parenthesis a plus h right parenthesis minus f left parenthesis a right parenthesis over h endfraction f(a+h)−f(a) h; (c) find the instantaneous rate of change of f when aequals=77.