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laila [671]
3 years ago
5

Let s be the sum of all digits used in writing all numbers from 1 to 1010.find s

Mathematics
1 answer:
Sophie [7]3 years ago
6 0
We know, s = n/2 [a + l ]
Here, n = 1010
a = 1
l = 1010

Substitute their values, 
s = 1010/2 [1 + 1010]
s = 505 [ 1011]
s = 510555

In short, Your Answer would be 5,10,555

Hope this helps!
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A landscaping company is laying a triangular flower bed. The height of the trangle is 15ft. What lengths of the base will make t
mash [69]

Answer:

28 ft

Step-by-step explanation:

The height of the triangle = 15 ft

The least required area A = 210 ft^2

We know that the area of a triangle = 1/2bh

Where

b is the base

h is the height

Substituting, we have

210 = 1/2 x b x 15

210 = 15/2 x b

420/15 = b

b = 28 ft

5 0
3 years ago
I don't get number 1 please help me
bonufazy [111]
When you are going from a larger measurement (such as meter) to a smaller measurement (such as centimeter), you will have to multiply by units of ten. Specifically if you are going from m to cm, you will use (n x 10^2) with n being the given number for meters. When you are going from a smaller measurement (such as centimeter) to a larger measurement (such as meter), you will have to divide by units of ten. Specifically if you are going from cm to m, you will use (n / 10^2) with n being the given number for centimeters.
 
7 0
3 years ago
Is the square root of 21 is an irratoinal number true or false explain
MrRa [10]

Yes it is because it has no square factors.

3 0
3 years ago
Start at 3 and create a pattern with the rule add 2 what is the 5th rumber in the answer
Maru [420]

Answer:13

Step-by-step explanation:

3,5,7,9,11,13

6 0
3 years ago
What is the square root of 64 over 225 with a negative outside of the radical?
irinina [24]
The square root of  (64/225)  is the same as  √64 / √225 . 
That could make the whole thing easier.

Do you know what either of those separate square roots is ?

You're right !    I'm so impressed!
The square root of  64  IS  8, and the square root of  225 surely is  15 .
You really know your stuff !

So now, the expression is  √64 / √225  =  <em>8 / 15</em> .

Oh, I almost forgot, it has a negative sign before it.  OK,so the answer is <em>- 8/15</em> .

5 0
3 years ago
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