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Anastasy [175]
2 years ago
7

Half a number x is 18

Mathematics
2 answers:
LuckyWell [14K]2 years ago
7 0

Answer:

36

Step-by-step explanation:

bc half of 36 is 18.

brilliants [131]2 years ago
4 0
36. Half of x is also x divided by 2. If x divided by 2 is 18 than 18 times 2 is x.

Hope this helped:)
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PLS ANSWER FAST!! WILL GIVE BRAINLIEST!!
horrorfan [7]

Answer:

500^1/3

Step-by-step explanation:

Since it is a cube root, the exponent is 1/3.

8 0
1 year ago
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
What 2 numbers add up to get -1 and multiply to get -20
Dovator [93]
The two numbers that add up to get -1 and multiply to get -20 are -5 and 4
-5*4=-20
-5+4=-1
I hope this helps
3 0
2 years ago
How to solve ? What is the answer?
RoseWind [281]

Answer:

L = \sqrt{52^2 + 30^2}

L = 60.033

Step-by-step explanation:

8 0
3 years ago
Plz answer this <br> 1.580 ml: 1.12 liter: 104ml
tatyana61 [14]

Answer:

??

Step-by-step explanation:

4 0
3 years ago
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