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lions [1.4K]
3 years ago
5

Mandana is ordering new tile for her kitchen floor. The area of the floor is 117.7 square feet, and she wants to order between 1

5% and 20% extra of the materials. Which of the following is a reasonable amount of tile for Mandana to order?
Mathematics
2 answers:
Natasha2012 [34]3 years ago
6 0
To find a percentage increase of 15%, you can multiply the original value by 1.15.
To find a percentage increase of 20%, you can multiply the original value by 1.2.

117.7 * 1.15 = 135.355
So if she orders 15% extra tile, she will order around about 135.355 square feet.

117.2 * 1.2 = 141.24
And if she orders 20% extra tile, she will order around about 141.24 square feet.

Any number between those two values will be the amount of tile she might order.
Pavlova-9 [17]3 years ago
4 0

Answer:

137 square feet

Step-by-step explanation: First, convert the percents to decimals to simplify the calculation.

15% = 15 ÷ 100

= 0.15

   

20% = 20 ÷ 100

= 0.2

Next, multiply the area of the floor by 0.15 and 0.2 to find the least and greatest amount of extra tile Mandana should order.

0.15 × 117.7 square feet = 17.655 square feet

   

0.2 × 117.7 square feet = 23.54 square feet

Then, add the amounts of extra tile to 117.7 square feet to find at least and at most how much tile she should order.

117.7 square feet + 17.655 square feet = 135.355 square feet

   

117.7 square feet + 23.54 square feet = 141.24 square feet

So, Mandana should order between 135.355 square feet and 141.24 square feet of tile.

Therefore, 137 square feet is a reasonable amount of tile for Mandana to order.

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The measure of hypotenuse using the ruler is 25.5 cm and using the formula is 23.43 cm, they are not same, and formula can be used to in the real life problems as well.

<h3>What is a right-angle triangle?</h3>

It is a triangle in which one of the angles is 90 degrees and the other two are sharp angles. The sides of a right-angled triangle are known as the hypotenuse, perpendicular, and base.

The question is incomplete:

The complete question is:

Present a picture of an object (TV, Ipad Screen, Book Cover) that contains a right angle (it could be something in nature or that is man-made). Use a ruler or measuring tape to measure the two sides that make the right angle and measure the distance from the end of one side to the end of the other side (hypotenuse). Draw a diagram of the object including the measurements. Use your leg measurements on your diagram to calculate a theoretical hypotenuse. (Show all steps).

  • Does the hypotenuse that measured with a ruler/measuring tape equal the hypotenuse you calculated?
  • Why do you think they are or are not exactly the same?
  • What did you learn from developing this presentation?

We are assuming the length of one side x:

x = 18 cm

Length of other side y:

y = 15 cm

And length of the hypotenuse z:

z = 23.5 cm

From the Pythagoras theorem:

z² = x² + y²

z² = 18² + 15²

z² = 549

z = √54 = 23.43 cm

The measure of hypotenuse is:

Using ruler: x = 25.5 cm

Using formula: x = 23.43 cm

They are not equal due to the reading in the ruler.

The formula can be used to in the real life problems as well.

Thus, the measure of hypotenuse using the ruler is 25.5 cm and using the formula is 23.43 cm, they are not same, and formula can be used to in the real life problems as well.

Learn more about the right angle triangle here:

brainly.com/question/3770177

#SPJ1

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