Explanation

1 meter (m) = 1000 millimeters (mm)

1 meter (m) = 100 centimeters (cm)

1 centimeter (cm) = 10 millimeters (mm)

1 millimeter (mm) = 0.1 centimeters (cm)

1 kilometer (km) = 1000 meters (m)

Explanation

To find the new price, you need to calculate 20% of the original price and subtract that amount from the original price.

Original price = $20

Discount = 20% of $20 = 0.20 x $20 = $4

New price = Original price - Discount

= $20 - $4

= $16

So, the correct answer is: $16.

Explanation

x + y = 67 ... (equation 1)

x - y = 3 ... (equation 2)

where x and y are the two numbers.

We can solve this system of equations by adding equation 1 and equation 2, which eliminates y:

2x = 70

Dividing both sides by 2 gives:

x = 35

Now that we have x, we can substitute it into equation 1 to find y:

35 + y = 67

Subtracting 35 from both sides gives:

y = 32

So, the two numbers are 35 and 32.

Explanation

When you add 1/3 + 1/3, you are essentially combining two equal parts of a whole.

Since both fractions have the same denominator (3), you can simply add the numerators:

1/3 + 1/3 = (1 + 1)/3 = 2/3

So, the result is 2/3.

Explanation

Bondi Beach is a popular beach and the name of the surrounding suburb in Sydney, New South Wales, Australia.

Bondi Beach is located 7 km (4 mi) east of the Sydney central business district.

Explanation

Four years ago, the average age of A, B, and C was 25 years.

This means that the total age of A, B, and C four years ago was 25 x 3 = 75 years.

Since then, all three have aged 4 years, so their total age now is 75 + 4 + 4 + 4 = 87 years.

Five years ago, the average age of B and C was 20 years.

This means that the total age of B and C five years ago was 20 x 2 = 40 years.

Since then, both B and C have aged 5 years, so their total age now is 40 + 5 + 5 = 50 years.

Now, we know that the total age of A, B, and C is 87 years, and the total age of B and C is 50 years.

So, A's current age is 87 - 50 = 37 years.

The correct answer is: 37 years

Explanation

To solve this proportion, we can use the following steps:

Write the proportion as a fraction: 3/x = 12/20

Cross-multiply: 3 × 20 = 12 × x

Simplify: 60 = 12x

Divide both sides by 12: x = 60/12

Simplify: x = 5

So, the value of x is 5.

Explanation

Five years ago, the average age of P and Q was 15 years.

This means that the total age of P and Q five years ago was 15 x 2 = 30 years.

Since then, both P and Q have aged 5 years, so their total age now is 30 + 5 + 5 = 40 years.

The average age of P, Q, and R today is 20 years, so the total age of P, Q, and R is 20 x 3 = 60 years.

We already know that the total age of P and Q is 40 years, so R's age must be 60 - 40 = 20 years.

After 10 years, R's age will be 20 + 10 = 30 years.

So, the correct answer is: 30 years

Explanation

To connect to the internet, you need:

• Internet Service Provider (ISP): a company that provides access to the internet.
• Internet connection: a link between your device and the ISP's network.
• Modem: a device that modulates and demodulates signals to transmit data over the internet connection.

Explanation

When a computer detects invalid data, it often displays a red triangle or an error indicator to alert the user.

This symbol is commonly used in spreadsheets, databases, and other software applications to indicate that the data is incorrect, inconsistent, or outside of the expected range.