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1 year ago

......................

1 answer:

8 0

We are given a table of frequencies, so in order to find probability associated with it, we need to start by adding all the numbers in the frequency, since that would give us the totals:

We add :

7.7 + 8.2 + 24.1 + 25.6 + 51.5 + 29. 4 = 146.5

Now, notice that they ask you to find the probability associated with a voter chosen at random to be in a group DIFFERENT from the range 21 to 24, That means the complementary of this range, which is therefore

146.5 - 8.2 = 138.3 (since 8.2 is the frequency for the 21 - 24 years/age range.

Then the probability is the quotient:

138.3 / 146.5 = 0.9440273 which in percent terms is 94.4 %

If you teacher wants the probaility in decimal (math) form, use 0.944.

If he/she wants it in percent form, use 94.403% (using

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Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for

yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the ordered pairs

(100,54) and (660, 138)

substitute

$m=\frac{138-54}{660-100}$

$m=\frac{84}{560}=\$0.15\ per\ minute$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=0.15\\point\ (100,54)$

substitute

$y-54=0.15(x-100)$

step 3

Convert to slope intercept form

Isolate the variable y

$y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39$

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

6 0

3 years ago

Liling is a salesperson at a computer store she recurves a base salary of $2,300 per month and she receives a commission of 3% o

Harman [31]

Answer:

$3948

Step-by-step explanation:

<u>Total earning:</u>

Salary + commission + extended warrant fee
2300 + 0.03*44000 + 41*8 =
2300 + 1320 + 328 =
3948

8 0

3 years ago

Jayden is driving on a long road trip. He currently has 11 gallons of gas in his car. Each hour that he drives, his car uses up

DENIUS [597]

Answer:

a. 8 gallons

b. (11-0.75t) gallons

Step-by-step explanation:

a. Here in this question, we are told that the total amount of fuel in the fuel tank is 11 gallons and the car consumes 0.75 gallon per hour. We are interested in knowing the amount of fuel left in the tank after driving for four hours.

We proceed as follows;

Since 0.75 gallon is consumed in an hour, the amount of fuel consumed in 4 hours would be the amount consumed in an hour * 4 hours

Mathematically, that would be 0.75 * 4 = 3 gallon

Now, the amount of fuel left is simply the difference between the initial amount of fuel in the tank minus the amount of fuel present after 4 hours.

That would be; 11 - 3 = 8 gallons

b. Like above, we want to know the amount of fuel left after t hours.

Since 0.75 is used up per hour, the amount used up in t hours would be 0.75 * t = 0.75t

Now, the amount of fuel that would be left in the tank would be the difference between what we had initially and what was used up.

Mathematically, that would be 11- 0.75t

4 0

3 years ago

How can I do this, please help me!

sleet_krkn [62]

Answer:

Step-by-step explanation:

3n to the third power+11

n=2

so, 3x2=6, so to simplify take 3x2 three times and make it 9x6=54 then add 11 so it becomes 56+11=65

so the answer is D.

8 0

3 years ago

Read 2 more answers

What is 10 4/5 minus 3 1/2

Oksanka [162]

The answer is 7.3 or in other words 7 3/10

Hope I helped

4 0

3 years ago

Read 2 more answers