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grandymaker [24]
3 years ago
11

Solve for d. 41 =12d-7

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

d=4

Step-by-step explanation:

just trust me

(Add 7 both sides - 48 = 12d,

divide both sides by 12 - d = 4)

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When 8 is subtracted from a certain number and the result is multiplied by 3 the answer is 21. What is the original number?​
Debora [2.8K]
The original number is 15.

Let’s work it out.

First, divide.

21 divided by 3 is 7.

Now, add.

8 + 7 = 15

This is true because...

15 - 8 = 7



Hope this helps, have a great day, stay safe and positive.

:)
5 0
4 years ago
Rick wants to compare 87..421 and 91.396 . What might happen if he compares the 421 thousandths and the 396 thousandths first
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Who was the first person that created mathematics ?
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Mathematics encompasses many different types of studies, so its discovery can’t even be attributed to one person. Instead, mathematics developed slowly over thousands of years with the help of thousands of people!

How did it get started? No one can know for sure, but we can use our imaginations to think about how mathematicsmight have gotten its start. For example, if we go all the way back to prehistoric man gathering berries to eat, we can imagine how this basic task probably gave rise for a need for math. If you and your prehistoric buddy gathered a basket full of berries, you’d probably agree to split them evenly. First, you’d need to know how many berries you gathered. That means you’d need to count them. You might first need to come up with names for the basic units ofmeasurement. Is this how counting and the first numbers came about? No one knows, but you can see how this might be how it happened.

Similarly, division might have been born from the need to split that pile of berries evenly. How advanced didprehistoric man get with mathematics? Probably not far at all, but a need for certain mathematic principles likely arose from daily life and, as such, were discovered or created out of need rather than invented. Early learning eventually led to more advanced fields of mathematics, such as algebra, geometry, calculus, and trigonometry!

Because many mathematical discoveries were made as a result of necessity, it comes as no surprise that scientists believe that many basic mathematical functions, such as addition, multiplication, and the like, appeared thousands of years ago in various areas at the same time, including China, India, Mesopotamia, and Egypt.

The oldest clay tablets with mathematics date back over 4,000 years ago in Mesopotamia. The oldest written texts onmathematics are Egyptian papyruses. Since these are some of the oldest societies on Earth, it makes sense that they would have been the first to discover the basics ofmathematics.

More advanced mathematics can be traced to ancient Greece over 2,500 years ago. Ancient mathematician Pythagoras had questions about the sides of a right triangle. His questioning, research, and testing led to a basic understanding of triangles we still study today, known as the <span>Pythagorean </span>Theorem.

Most experts agree that it was around this time (2,500 years ago) in ancient Greece that mathematics first became an organized science. Since that time, mathematical discoveries have spurred other mathematicians and scientists to build upon the work of others, constantly expanding our understanding ofmathematics and its relation to the world around us.

Hope this helps! :)

7 0
3 years ago
Water is steadily dripping from a faucet into a bowl. You want to write an equation that represents the number of milliliters y
stepan [7]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
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If a car is moving 30 miles an hour how long will it take to travel 540 miles
Viefleur [7K]

Answer:

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Step-by-step explanation:

In one hour, the car travels 30 miles. We need to multiply a number with 30 to get 540. This number is 540/30 = 18.

Hope this helps!

4 0
3 years ago
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