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3 years ago

Is -3/5 rational or irrational???????

Mathematics

2 answers:

GenaCL600 [577]3 years ago

5 0

-3/5 is rational number

daser333 [38]3 years ago

3 0

Answer: Rational

Step-by-step explanation: To determine whether -3/5 is rational or irrational, remember that all fractions positive or negative are rational numbers.

Therefore, -3/5 is a rational number.

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Consider an experiment where we ask what type of car – either domestic (e.g., Chevrolet, Ford, Chrysler, etc.), foreign built ab

Nostrana [21]

Answer:

$12^{20}$ outcomes for this sample space (under some considerations)

Step-by-step explanation:

Let's define the multiplication principle.

If a first part of an experiment can happen in n1 ways, a second part of an experiment can happen in n2 ways , . . . , a i - part of an experiment can happen in ni ways, then the total outcomes for the all the experiment are

(n1) x (n2) x ... x (ni)

In this exercise n1 = domestic

n1 is the total classes for domestic category

(Let's suppose n1 = 3 because of Chevrolet, Ford and Chrysler)

n2 = 1 (Also supposing we only have ''a Toyota built in Japan'' category for n2)

n3 = 1 (Also supposing we only have ''A Toyota built in Kentucky'' category for n3)

n4 = 4 (Also supposing we only have ''sedan,hatchback, truck or SUV'' category for n4

The possible outcomes for one person in the experiment are

$(Domestic).(ForeignBuiltAbrod).(ForeignBuiltInTheU.S).(Style)$

Where what it is brackets are the possible categories for that classification.

$n1.n2.n3.n4=3.1.1.4=12$

We have 20 different people then $12^{20}$ are the possible outcomes sample space

In the sample space there are $12^{20}$ outcomes if we consider that we have 3 types of domestic car, 1 type of foreign car built abroad,1 type of foreign car built in the U.S and 4 differents styles for this 20 different people.

7 0

3 years ago

Arnie is mixing red and yellow paints to make two different shades of orange. To make 1 cup of dark orange paint, he needs 7 ou

hjlf

Answer:

Arnie has enough red paint

Step-by-step explanation:

step 1

Find out the number of ounces of red paint needed to make 3 cups of dark orange paint

Let

x -----> number of ounces of red paint

y -----> number of ounces of yellow paint

z ----> cups of dark orange

we know that

\frac{x}{z}=\frac{7}{1}\ \frac{ounces\ red\ paint}{cups\ dark\ orange}

cups dark orange

ounces red paint

For z=3 cups

substitute and solve for x

\frac{x}{3}=\frac{7}{1}

x=21\ ounces\ of\ red\ paintx=21 ounces of red paint

step 2

Find out the number of ounces of red paint needed to make 3 cups of light orange paint

Let

x -----> number of ounces of red paint

y -----> number of ounces of yellow paint

z ----> cups of light orange

we know that

\frac{x}{z}=\frac{3}{2}\ \frac{ounces\ red\ paint}{cups\ light\ orange}

cups light orange

ounces red paint

For z=3 cups

substitute and solve for x

\frac{x}{3}=\frac{3}{2}

x=4.5\ ounces\ of\ red\ paintx=4.5 ounces of red paint

step 3

Adds the ounces of red paint

21+4.5=25.5\ ounces\ of\ red\ paint21+4.5=25.5 ounces of red paint

25.5\ ounces < 32\ ounces25.5 ounces<32 ounces

therefore

Arnie has enough red paint

7 0

3 years ago

A salesperson earning a 22.5% commission takes home $1,200 as a commission. What was the dollar value of the items she sold?

n200080 [17]

Answer:

$5333.33

Step-by-step explanation:

x is the unknown, but we know that 22.5% of x equals 1,200. So we use this information to set up an equation.

x * 22.5% = 1,200

Now we can solve for x by dividing both sides by 22.5%

x = 5333.33

The dollar value of the items she sold was $5333.33

6 0

3 years ago

The variable Z is directly proportional to X. When X is 3, Z has the value 54. What is the value of Z when X = 12

Ymorist [56]

Given that z is directly proportional to x, then:
zαx
hence;
z=kx
therefore:
k=z/x
when x=3,z=54
thus;
k=54/3
=18
hence;
z=18x
therefore the value of z when x=12 will be:
z=18*12
z=216
The answer is z=216

3 0

3 years ago

The slope of a line can tell you

Zina [86]

I pretty sure all of them are right i study this a couple years ago

4 0

3 years ago