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Murrr4er [49]
3 years ago
10

Explain how the digit 7 can have different values

Mathematics
1 answer:
kakasveta [241]3 years ago
7 0
It could be 7 groups of 1 3 groups of 2 with one left over or 2 groups of 3 with 1 left over
You might be interested in
Use the method of Gauss to find the sum.1+2+3+.....+400
nikklg [1K]
Gauss' method for addition relies on the fact that you can 'pair' certain numbers together. Look at the example:

1+2+3+4+5+6+7+8+9+10

We could manually add all these together from left to right but a clever way to think about this is if we add together the ends of the sum (10+1) we get 11. If we then move one in from the ends and add these (2+9) we also get 11. This means that 1+2+...+9+10 is the same as 11+11+...+11+11.

Because each 2 numbers adds to 11 we know the total number of 11's we have to add together is the length of the sum divided by 2. In our case 5 (10 ÷ 2). We need to add 5 lots of 11 to get our answer. This is the same as 11 × 5 which is easily seen to be 55.

(If you add the 10 numbers together on a calculator you'll see 1+2+3+4+5+6+7+8+9+10 = 55) so this method really makes it a lot quicker.

Looking at your sequence, if we pair the ends together we get 401 (400+1) and we multiply this by the length of the sequence divided by 2. In your case, 200 (400 ÷ 2).

So the sum of all the numbers from 1 to 400 must be 401 × 200 = 80,200.

Remember the steps:
1. Pair the ends together and add them
2. Times this number by the length of the sequence halved

Hope this helps.
6 0
3 years ago
On a scale drawing of a museum to water fountains are 10 inches apart. the actual distance between them is 400 ft. on the same d
KatRina [158]

400 / 10 = 40

 so every 1 inch = 40 feet


3.125 * 40 = 125 feet between the exhibits



please mark brainliest


7 0
3 years ago
What is the value of x if y = 4
enyata [817]

Answer:

x is infinite

Step-by-step explanation:

x is a function so

if y=f:x

therefore

0 < x <  \infty

5 0
3 years ago
Masón has planted 6 rows in the vegetable garden. He continues to work, planting 1 row every 2 hours. Write an equation to repre
Sophie [7]
Y=.5x+6

I believe this is right sorry if it’s not.
5 0
3 years ago
Lol help now files just type it
insens350 [35]

Answer:

2 = 4/2

Step-by-step explanation:

Well the one for the 2 wholes, Since 2 wholes equal 4/2

because 4/2 simplified is 2 whole it I believe would be 4/2

6 0
3 years ago
Read 2 more answers
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