MATHEMATICS MIDDLE SCHOOL

There are 2 parent chaperones for every 12 students at a field trip how many chaperones are needed for 120 students

Answers

Answer 1
Answer:

20 chaperones are needed
Answer 2
Answer:

The answer is 20.

120 / 12 = 10

This means that there are 10 sets of 12 students. Now multiply 10 by 2:

10 * 2 = 20

Good luck!

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The watering can that Carlos uses in his vegetable garden holds 5 of a certain unit of liquid volume. When full, how much water is in the watering can?

Answers

the watering can can hold 5 units of liquid volume
It will hold 5 of the certain units

How much scissors weigh in grams

Answers

Maybe 40 grams , it really depends on the scissors
Maybe 40g not 100% sure 

8 (x-1) = 3 (3x-2)
Please help, its due tomorrow!

Answers

8\left( x-1 \right) =3\left( 3x-2 \right) \n \n 8x-8=9x-6\n \n 9x-8x=-8+6\n \n x=-2
8 (x-1) = 3 (3x-2)\n8x-8=9x-6\n8x-9x=-6+8\n-x=2\nx=-2

How can conversion of measurements help me solve real world problems

Answers

In different parts of the world people use different units. Being able to convert will help me understand and fit into their surroundings. Like for instance in Canada people measure speed in kilometers, so their speed limits are written in kmph. While in America the speed is measured in miles so Mph. Knowinf=g the conversions can help you drive safely and not get a ticket.
Hope that was what you were expecting.

Final answer:

Unit conversion and dimensional analysis, based on equivalent ratios, can solve real-world problems. They help in practical scenarios, like converting cooking measurements or understanding distances in different countries. The metric system, based on powers of 10, is particularly convenient for such conversions.

Explanation:

Conversion of measurements, also known as unit conversion and dimensional analysis, can help solve real-world problems in various practical scenarios. For example, a person reading a European cookbook in the United States might require conversion of quantities expressed in liters into cups. Likewise, a Canadian tourist driving through the U.S. might need to convert miles on road signs into kilometers to gauge distances accurately.

It's crucial to understand that a ratio of two equivalent quantities expressed with different measurement units can be used as a unit conversion factor. Suppose, the lengths of 2.54 cm and 1 in are equivalent, so you can derive a conversion factor from this ratio. Various other commonly used conversion factors can make this process easier in daily life, such as converting a basketball player's vertical jump from inches to centimeters or converting cooking measurements.

The metric system is particularly convenient for unit conversion as it is based on powers of 10, so conversions between metric units can be done by simply moving the decimal place. However, dimensional analysis and unit conversion are universally applicable tools that can make life easier, from understanding distances to making recipes to making scientific calculations.

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What expression can be used for estimating 868 divided by 28

Answers

868 is about 870, and 28 is about 30, so your expression would be 870 divided by 30 which would be 29 and the actual answer is 31, so your estimate would be close to your actual answer.
You could do 870/30=29.
Or you could do 868/28=31 and then round it but it looks like it doesn't need rounding.

This right square pyramid has a base length of 4 inches and a slant height of 7 inches what is the surface area of this pyramid?

Answers

Hence Surface are of pyramid is74.24 inches^(2)

What is a square pyramid?

A pyramid with base as square is said square pyramid

How to calculate Surface area?

Formula to calculate surface area=A=a^(2) +2a\sqrt{(a^(2) )/(4) +h^(2) }

where a =4 ,h=7

=4^(2) +2(4)\sqrt{(4^(2) )/(4)+7^(2) }

= 16+8\sqrt{(4)/(1 ) +49

=16+8*7.28

=16+58.24

=74.24 inches^(2)

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Final answer:

The surface area of the right square pyramid is calculated by adding the area of the square base (16 square inches) and the combined area of the triangular faces (56 square inches). Hence, the total surface area of the pyramid is 72 square inches.

Explanation:

To calculate the surface area of a square pyramid, you need to calculate the area of the base and the area of the four triangular sides. Firstly, the area of the square base is found using the formula A = s², where s is the side length. In this case, the base area (A) would be 4² = 16 square inches.

Secondly, to find the area of a single triangular face you use the formula A = 0.5*base*height, in this case, the base is the same as the square base and the height corresponds to the slant height (7 inches). Thus, the area for one triangle would be 0.5*4*7 = 14 square inches. As the pyramid has four equal triangular faces, to find the total area of these faces you would multiply 14 by 4 giving 56 square inches.

Finally, to find the total surface area of the pyramid, you add the base area and the area of the triangular faces together, which results in 16 + 56 = 72 square inches.

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