From a barrel of colored marbles, you randomly select 7 blue, 5 yellow, 8 red, 4 green, and 6 purple marbles.

Mathematics

2 answers:

Phoenix [80]3 years ago

3 0

The first answer is b. The second answer is c.

Wewaii [24]3 years ago

3 0

1) b.5/6

2) c.1/3

hope this helps

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Find the Unit Rate

Eduardwww [97]

Answer:

1) $8.7\ \frac{meters}{hour}$

2) $1.92\ \frac{points}{game}$

3) $1.25\ \frac{strikeouts}{inning}$

4) $1.5*10^{-5}\ \frac{error}{piece}$

5) $33.40\ \frac{points}{career\ playoff\ game}$

Step-by-step explanation:

1) Convert mixed numbers to decimal numbers dividing the numerator by the denominator and adding the result to Whole number part:

$21+0.75=21.75\\\\2+0.5=2.5$

The unit rate is:

$Unit\ rate=\frac{21.75\ meters}{2.5\ hour}\\\\Unit\ rate=8.7\ \frac{meters}{hour}$

2) Divide 2,857 points by 1,487 games:

$Unit\ rate=\frac{2,857 \ points}{1,487\ games}\\\\Unit\ rate=1.92\ \frac{points}{game}$

3) Divide 255 strikeouts by 204 innings:

$Unit\ rate=\frac{255\ strikeouts}{204\ innings}\\\\Unit\ rate=1.25\ \frac{strikeouts}{inning}$

4) Divide 15 errors by 1,000,000 pieces:

$Unit\ rate=\frac{15\ errors}{1,000,000\ pieces}\\\\Unit\ rate=1.5*10^{-5}\ \frac{error}{piece}$

5) Divide 5,979 points by 179 career playoff games:

$Unit\ rate=\frac{5,979\ points}{179\ career\ playoff\ games}\\\\Unit\ rate=33.40\ \frac{points}{career\ playoff\ games}$

7 0

2 years ago

Algebra 1 help please!

Vsevolod [243]

Answer:

$x=46$ and $y=45$

Step-by-step explanation:

To solve this, you must set up a system of equations. The first sentence says that there are two numbers and that their sum is 91, so your first equation is $x+y=91$ . For the next equation, it says that the difference of those same numbers is 1, which means that the equation is $x-y=1$ . Now, putting those two together for the system of equations, it's easiest to add them. The result will be $2x=92$ which when simplified gives you the value of x. Taking the value of x, you can substitute in the second equation to find the value of y.