All categories

3 years ago

PLEASE HELP

Mathematics

1 answer:

Aneli [31]3 years ago

6 0

Answer:

Terrell drove 200 miles one way

Step-by-step explanation:

Since his trip concluded at 9 hours, let's say that x = time traveled at 40 mph

and 9 - x = time traveled at 50 mph

D = (rate) x (time)

40x = 50(9 - x) -----Use Distributive property on the right side of the equation

40x = 450 - 50x -----Add 50x on both sides

90x = 450 ------Divide by 90 on both sides

We end up with x = 5 which is the value we need to determine the distance of our first trip, calculated by

D = 40x, or 40(5) = 200 mi

You might be interested in

Paulo catches a 7.45 am tram to school. During a period of 79 days, he arrives at school on time 53 occasions. Estimate the prob

lawyer [7]

Answer:

On time: 0.67

Late: 0.33

Step-by-step explanation:

Probabilities

One approach to estimating the probability of occurrence of an event is to record the number of times that event happens (e) and compare it with the total number of trials (n).

The probability can be estimated with the formula:

$\displaystyle P=\frac{e}{n}$

And the probability that the event doesn't occur is

Q = 1 - P

Paulo arrives on time to school e=53 times out of n=79 times. The probability that he arrives on time is:

$\displaystyle P=\frac{53}{79}$

P = 0.67

And the probability he arrives late is:

Q = 1 - 0.67 = 0.33

4 0

3 years ago

Consider two investments, one earning simple interest and one earning compound interest. If both start with the same initial de

Len [333]

Answer:

Ratio between balances will be:

$(x*(1+i)*n)/(x*(1+i)^n)$

Where;

x = deposit

%i = interest rate annual

n = years

Step-by-step explanation:

Lets say first deposit is x$ for both investment and annual interest rate for both investment are %i. Also, they stayed under i interest in n years:

Total balance for simple interest is:

$Total balance=x*(1+i)*n$

How ever total balance for compound interest is:

$Total balance=x(1+i)^n$

6 0

3 years ago

Two houses on the same side of the street have house numbers that are consecutive

DochEvi [55]

Answer:

28 and 30

Step-by-step explanation:

'x' = 1st consecutive #

'x+2' = 2nd consecutive #

x + x+2 = 58

2x + 2 = 58

2x = 56

x = 28

x+2 = 30

3 0

2 years ago

If you could put wings on any species of animal, what animal would you choose?

denis-greek [22]

Answer:

Humans

Explanation:

So I can have wings :)

5 0

2 years ago

Read 2 more answers

Simplify the expression 7x-1+2x

Leokris [45]

Answer:-23

Step-by-step explanation: i just know nika

6 0

1 year ago

Read 2 more answers