PLEASEE HELPPP!!!!

If you wash your car every 15 days & I wash mine every 20 days, in how many days will we be washing them on the same day?

Nastasia [14]

Answer: 60 days

Step-by-step explanation:

To get the number of days that both of them will be washing the cars on thesame day, we have to find the lowest common multiple of 15 and 20. This will be:

Multiple of 15 = 15, 30, 45, 60, 75, 90

Multiples of 20 = 20, 40, 60, 80, 100

Lowest common multiple = 60

Therefore, they'll be Washing the car on thesame day on the 60th day.

5 0

3 years ago

Rita bought 4 rulers for $4.00. If r represents the number of rulers purchased, which equation represents this situation?

Wittaler [7]

Answer: 4r = 4

Step-by-step explanation:

Ruth bought 4 rulers and each ruler is to be represented by r. She therefore bought:

= 4r

She bought these for a total of $4.00 so the equation then becomes:

4r = 4.00

Equation representing situation is: 4r = 4

8 0

3 years ago

A hose is leaking water at a rate of 2 oz/h. How many cups of water will leak out after 2 weeks?

Over [174]

Answer:

84 cups of water will leak out after 2 weeks

Step-by-step explanation:

* Lets how many how to change oz to cup

- One cup contains 8 oz

- We can use the ratio to solve this problem

- A hose is leaking water at a rate of 2 oz/h

- We need to find how many cups of water will leak out after 2 weeks

∵ The rate of the water leak out is 2 oz/hr

∵ 1 cup contains 8 oz

∴ 1 oz = $\frac{1}{8}$ cup

∴ 2 oz = 2 × $\frac{1}{8}$ = $\frac{2}{8}$ = $\frac{1}{4}$ cup

∴ The rate of the water leak out = $\frac{1}{4}$ cup/h

∵ 1 day = 24 hours

∵ 1 week = 7 days

∴ 1 week = 7 × 24 = 168 hours

∵ The number of hours in 1 week is 168

∴ The number of hours in 2 weeks = 168 × 2 = 336 hours

⇒ cups : hours

⇒ $\frac{1}{4}$ : 1

⇒ x : 336

- By using cross multiplication

∴ x = 336 × $\frac{1}{4}$

∴ x = 84

- x represents the number of cups of water leak out

<em>84 cups of water will leak out after 2 weeks</em>

5 0

4 years ago

Use the table below to determine whether or not the cost to hire a web designer is a linear function of the number of hours work

KIM [24]

Answer:

The answer is B

Step-by-step explanation:

It is constantly changing every time so it is not linear. (2 x 100.5 is 205, 5 x 80 is 400)

5 0

3 years ago

Read 2 more answers

Ming drew the model below to represent the equation 24 + 12 = blank x (8 + 4). A model with 3 rows of 8 and 3 rows of 4. What is

Mila [183]

Given:

The equation is:

$24+12=\_\_\times (8+4)$

A model with 3 rows of 8 and 3 rows of 4.

To find:

The missing value in Ming's equation.

Solution:

We have,

$24+12=\_\_\times (8+4)$ ...(i)

A model with 3 rows of 8 and 3 rows of 4. Using this information, we get

$24+12=3\times 8+3\times 4$

Taking out the common factor 3, we get

$24+12=3\times (8+4)$ ...(ii)

On comparing (i) and (ii), we get the missing value is 3.

Therefore, the missing value in Ming's equation is 3.

3 0

3 years ago