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3 years ago

___ tens 15 ones=4 tens 5 ones

Mathematics

1 answer:

saw5 [17]3 years ago

3 0

Answer:

3 tens

Step-by-step explanation:

4 tens and 5 ones is 45

so 45 minus 15 is 30

so 3 tens

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Petes unpaid balance is 3529.30 his apr is 18.6% and he made a transaction of 148 what is his new balance

sveta [45]

508.45 i think i multiplied the apr i may be wrong though i have math of finance so

6 0

3 years ago

How do you calculate the midpoint using the given endpoints? <br> They are : -2 and 12.

Alexus [3.1K]

Disregard the sign. Find the mean (add the numbers, and divide by the amount of numbers there are)

2 + 12 = 14/2 = 7

Add 7 (if you are going by -2), if you are starting from 12, subtract 7

-2 + 7 = 5

5 is your midpoint.

hope this helps

The equation is: (Note: Let the two numbers be x and y)

(x + y)/2 = midpoint

hope this helps

4 0

3 years ago

The number of hours between successive train arrivals at the station is uniformly distributed on (0, 1). Passengers arrive accor

Zepler [3.9K]

Answer:

The value of $E(X) =\frac{7}{2}$ .

The value of $Var (X)= \frac{91}{12}$ .

Step-by-step explanation:

Consider the provided information.

The number of hours between successive train arrivals at the station is uniformly distributed on (0, 1). Passengers arrive according to a Poisson process with rate 7 per hour.

Let X denote the number of people who get on the next train.

Part (A)

Here, X = N(T), N(t) ∼ Poisson(λt), and λ = 7

Therefore, E(N(T)|T) = λT

Now find E(X) as shown below

$E(X) = E(N(T))$

$E(X) = E(E(N(T)|T))$

$E(X) = E(\lambda T) = \frac{7}{2}$

Hence, the value of $E(X) =\frac{7}{2}$ .

Part (B)

Now we need to find VAR[X]

$Var (X) = Var (E(N(T)|T)) +E(Var (X|T))$

$Var (X)= E(\lambda T)+Var (\lambda T)$

$Var (X)= \frac{49}{12}+\frac{7}{2}$

$Var (X)= \frac{91}{12}$

Hence, the value of $Var (X)= \frac{91}{12}$

7 0

3 years ago

Bev earns $2 a week for taking out her neighbor’s trash cans. Complete the table of values. Then state the domain and range.

Eduardwww [97]

Domain : $\{1,2,3,4\}$

Range: $\{2,4,6,8\}$

Explanation:

It is given that Bev earns $2 a week.

Thus, for n number of weeks, we shall multiply $2 with n.

Where $n=1,2,3,4$ is the number of weeks.

For 1 week, Bev earns $2n=2(1)=2$ ⇒ $2

For 2 weeks, Bev earns $2n=2(2)=4$ ⇒ $4

For 3 weeks, Bev earns $2n=2(3)=6$ ⇒ $6

For 4 weeks, Bev earns $2n=2(4)=8$ ⇒ $8

Thus, we can see that the domain is the number of weeks.

Hence, Domain : $\{1,2,3,4\}$

Also, the money earned is the range.

Hence, Range: $\{2,4,6,8\}$

6 0

3 years ago

raj has 16 cups of flour he uses 3 1/2 cups to make bread and 4 3/4 cups to make muffins how many coups of flour does raj have l

DiKsa [7]

Answer:

31/4 cups of flour have left.

Step-by-step explanation:

3 1/2=7/2

4 3/4=19/4

--------------

16-7/2-19/4

64/4-14/4-19/4

31/4

6 0

3 years ago

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