the probability of picking out a green marble is 3/10, or 30%. this is because there are 3 green marbles, out of 10 marbles total.
the probability of picking out a non-red marble is 1/2, 5/10, or 50%. this is because 5 of the 10 marbles are non-red, while 5 of the marbles are red.
x > 10
subtract 47 from each side
-4x < -40
divide by -4. when dividing by a negative, flip the inequality.
-4x/-4 > -40/-4
x > 10
1. by definition, scientific notation has the following form:
a is a number between 1 and 10 but does not include 10.
b an integer.
2. when you multiply 3.25 by 7.8 the result is 25.35 and when you multiply by , you obtain , but to write ree thsult in scientific notation, the decimal point must be after the first digit. therefore, you must move the decimal point one place to the left. so, the exponent changes from 9 to 10:
i think the original price is 60
25% of 60 is $45.