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kolbaska11 [484]
3 years ago
7

I need the answer please and can u answer my recent to.

Mathematics
1 answer:
ale4655 [162]3 years ago
3 0

Answer:

30 hours.

Step-by-step explanation:

Richard can build 15 snowballs in 1 hour

But 2 snowballs melt every 15 minutes

In 1 hour, the number of snowballs that will have melted is:

\frac{60}{15} × 2 = 8

The number of snowballs that will have remained = 15 - 8 = 7

So 7 snowballs will have remained in 1 hour

For 210 snowballs to have remained, it will take:

\frac{210}{7} × 1 = 30 hours.

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What is 538x46 and how would u show ur work
mylen [45]
Ok listen close. Put 538 on top and 046 on the bottom. Line them up so you don't get confused. don't forget it's multiplication. Start from right to left. Your going to have to cancel out each of the bottom numbers. Cool. Now here's the equation. multiply 8x6. it's 48. put the 8 under the 6 and the 4 small up by the 3 in the 538. That's a remainder. Now it's time for the 3x6 with the remainder of 4. it's 18. now add the remainder to 18.   4+18=22. Put the single 2 next to the other answer just to the left. It should look like blankspacebecauseequationisn'tdone 28. Now Put the remainder (2) small right by the 5 in 538. Next is 5x6 with the remainder. It's 30+remainder of 1= 31 put both those numbers down next to the 28 answer space. It's now 3,128. Now this is where it gets tricky. put a 0 DIRECTLY BELOW the 8 in 3,128. This is for an equation later. Now you worked through the 6 part of 46, now you only have the 4 to work through. Now let's work through 8x4. it's 32. put the 2 right next to the 0 in the answer part. Put the remainder next to the 3 in 538.  Now it's 3x4 +the remainder of 3. It's 12+ 3 + 15. Put the 5next to the 20 in the answer section under 3,128. It should look like blablabla 520. Now let's work out 5x4 With the remainder of 1 from the 15. It's 20 + 1= 21. Put the 21 right next to 520. It should look like 21,520. Now to finish this equation, add the top number 03,128 and the bottom number 21,520. Here if it's easier the equation. 03,128+21,520 which equals 24,748. Hope that helped! 

5 0
3 years ago
PLEASEE HELPP WILL GIVE BRAINLIEST
Leya [2.2K]

Answer:

134

5000

i think im right

Step-by-step explanation:

3 0
3 years ago
Prove that 3^17−3^15+3^13 is divisible by 73.
Debora [2.8K]

Answer:

3^13*73

Step-by-step explanation:

3^17-3^15+3^13 So you factor out 3^13

=3^13(3^4-3^2+1)

3^4-3^2+1=73

3^13*73

Is this RSM?

5 0
3 years ago
What is the square root of 129
Juli2301 [7.4K]
If you are allowed to use a calculator then you only need to press the buttons. 

Assuming you cannot use a calculator you need to use approximation techniques. First let us begin by finding the two closest numbers that are perfect squares. In this case 11^2 and 12^2 are the closest square numbers to 129. 

11^2 = 121
12^2 = 144
We can already tell that the square root of 129 is closer to 11 than to 12. 
Now we need to get even closer.
If you try squaring a number like 11.5 then you can get even closer to 129. When you square 11.5 you get 132.25. Already you can tell that the square root of 129 is close to the square root of 132.25 or 11.5
Now we can get even closer square the number 11.25 and keep on going until one of these numbers when squared is almost or exactly 129. I hope I helped, there really isn't a great way to do this without a calculator, or by using the graph of y=x^2
7 0
3 years ago
PLEASE HELP ME ANSWER THIS QUESTION PLEASE!!!! I WILL GIVE BRAINLIST!!!!!!!!!!!!!!!!!!!!!!!!
zysi [14]

1st page: 580

2nd page: 576

in the 1st two pages:  580+576 = 1156

total word = 2000

total word = words written + words to write

2000 = 1156 + words to write

subtract 1156 from each side

2000-1156 = words to write

844 = words to write

Choice D

4 0
3 years ago
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