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3 years ago

A cleaning company charges x dollars per hour to clean floors and y dollars per hour to clean the rest of a house.

Mathematics

2 answers:

Vladimir [108]3 years ago

8 0

Answer:

whever Jazlenelopolito said:)

Step-by-step explanation:

good luck!

Sergio039 [100]3 years ago

5 0

Answer:

it is B (4,24)

Step-by-step explanation:

hope this helps!

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Correlation Coefficients. Image attached for the problem. A. 11 B. 9 C. 3 D. 5

andreyandreev [35.5K]

Answer:

Step-by-step explanation:

y bar basically means the average of the y-values.

To get the average, we add up all the y-values in the table and divide by the total number of values (here we have 5 values). Hence,

y bar = $\frac{5+7+10+15+18}{5}=11$

correct answer is A

8 0

3 years ago

A leprechaun places a magic penny under a girl's pillow. The next night there are 2 magic pennies under her pillow. The followi

marta [7]

Answer:

Step-by-step explanation:

Since the pennies need to be kept under the pillow in order to be doubled, we're really looking for the day the girl will wake up with 5 billion pennies under her pillow.

The general formula of that geometric sequence will be: t = 1 + 2^(n-1)

We need to find the value of n when t will be over 5,000,000,000.

So, the equation becomes:

5,000,000,001 = 1 + 2^(n-1)

2^(n-1) = 5,000,000,000

log(2^(n-1)) = log(5,000,000,000)

(n-1) * log(2) = log(5,000,000,000)

n-1 = log(5,000,000,000) / log(2)

n-1 = 22.25

n = 33.25

Since it has to be complete days, and we have to reach over 5 billion, then we round it up to 34.

5 0

4 years ago

The difference of two numbers is 5. Their sum is 19. What are the numbers?

andrew11 [14]

Answer: 12 and 7

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Mai runs laps at a constant speed of 250 meters per minute. How many meters dose she run in 7 minutes? Make a table and show you

jeyben [28]

Answer:

7*250= 1750

Step-by-step explanation:

every minute she runs 250 meter just add 250 to every minute until you get to 7 minutes

5 0

3 years ago

Pls help I dont under stand this at all

lisabon 2012 [21]

Answer:

0.5 = 0.25

1=2

2=4

2.5=5

3=6

Step-by-step explanation:

distance divided by 2 equals the time

i hope this helps!

7 0

3 years ago