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Natasha2012 [34]
3 years ago
6

How can you use mental math to multiply numbers by 10?

Mathematics
2 answers:
expeople1 [14]3 years ago
6 0

Answer:

Move the decimal point one space to the right

Step-by-step explanation:

Ex:

12*10=120            12=12.0 move the decimal one space to the right=120

You can also just add 0 if there isn't a decimal point

13.5*10=135                        move the decimal one space to the right

hope this helps :)

Wittaler [7]3 years ago
3 0

Answer:

add a zero at the end of the number. 5x10=50. 60x10=600. 700x10=7000 etc.

Step-by-step explanation:

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A car is traveling at a steady speed. It travels 1 3/4 miles in 2 1/3 minutes. How far will it travel in 47 minutes? In 1 hour?
aleksandrvk [35]

Answer:

  • Distance in 47 minutes = 0.75 × 47 = 35.25 miles
  • Distance in 1 hour or (60 minutes) = 0.75 × 60 = 45 miles

Step-by-step explanation:

Given that the car is traveling at a steady speed.

Distance traveled in 2 1/3 or 7/3 or (2.33) minutes = 1 3/4 miles

                                                                                 = 7/4 or 1.75 miles

Thus,

distance in 1 minute:  1.75/2.33 = 0.75 miles per minute

Thus,

  • Distance in 47 minutes = 0.75 × 47 = 35.25 miles
  • Distance in 1 hour or (60 minutes) = 0.75 × 60 = 45 miles
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3 years ago
Solve the equation. (If all real numbers are solutions, enter REALS. If there is no solution, enter NO SOLUTION.)
abruzzese [7]

Answer: 1

Step-by-step explanation:

16 * 1/2 = 8

7x + 1 = 8

7x = 7

x = 1

3 0
2 years ago
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The width of the rectangle is 7 feet, and the diagonal length of the rectangle is 16 feet. which measurement is the closest to t
yanalaym [24]

Answer: b. 14ft

Step-by-step explanation:

In the rectangle, the opposite sides are equal. The diagonal divides the rectangle into two equal right angle triangles. The diagonal represents the hypotenuse of both right angle triangles. The length and width represents the opposite and adjacent sides of the right angle triangles.

To determine the length, L of the rectangle, we would apply Pythagoras theorem which is expressed as

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the closest to the length of this rectangle in feet is

14ft

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3 years ago
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Romashka-Z-Leto [24]
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3 years ago
5x - x = -12 what is x???
aleksley [76]
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