Let's suppose that each question in the test has one and only one correct answer. This means we have 1 desired outcome out of the total 5 desired outcomes. Therefore:

Probability=#of desired outcomes / #of possible outcomes

$P=\frac{1 correct}{5 opctions}$

$P=\frac{1}{5}$

P=0.20

P=20%

7 0

3 years ago

a seed company sells two grades of grass seed. And hundred pound bag of a mixture of rye and Bluegrass sells for $255, and a hun

postnew [5]

Answer:

8 bags of rye & bluegrass mix

10 bags of bluegrass

Step-by-step explanation:

RB = bags of rye & bluegrass mix

B = bags of bluegrass

348B + 255RB = 5334

RB+B = 18 then RB = 18-B

substitute for RB

348B + 255(18-B) = 5334

348B + 4590 - 255B = 5334

reduce

93B = 744

B = 8

RB = 10

6 0

3 years ago

Find the sum of 7a^3+14a+12 and -6a^3+12a^2-7

Rasek [7]

Answer:

a³+2a³+5

Step-by-step explanation:

7a³+14a+12+{-6a³}+12a²-7

=7a³-6a³+14a+12a²+12-7

=a³+2a³+5

4 0

3 years ago