All categories

2 years ago

What is the sum of the digits of all 2-digit numbers from 10-99?

Mathematics

2 answers:

IRISSAK [1]2 years ago

7 0

Huh, well the sum is just adding the numbers together, so the answer is 4905.

Lesechka [4]2 years ago

3 0

This took forever to do but 176879

You might be interested in

Find the slope of the line that contains the pair of points: (6,-3

nirvana33 [79]

Answer: 1/11

Step-by-step explanation:

I’m using the same thing

7 0

2 years ago

Show how the perfect numbers 6 and 28 were generated. Show the aliquot parts of 6 and 28

Mashutka [201]

Step-by-step explanation:

Perfect number is the positive integer which is equal to sum of proper divisors of the number.

Aliquot part is also called as proper divisor which means any divisor of the number which isn't equal to number itself.

<u>Number : 6 </u>

Perfect divisors / Aliquot part = 1, 2, 3

Sum of the divisors = 1 + 2 + 3 = 6

Thus, 6 is a perfect number.

<u>Number : 28</u>

Perfect divisors / Aliquot part = 1, 2, 4, 7, 14

Sum of the divisors = 1 + 2 + 4 + 7 + 14 = 28

Thus, 28 is a perfect number.

3 0

3 years ago

If f(x) = (x + 9 and g(x) = --6, which describes the range of (f + g)(x)?

S_A_V [24]

Given:

Consider the below figure attached with this question.

To find:

The value of $(f+g)(x)$ .

Solution:

The given functions are:

$f(x)=|x|+9$

$g(x)=-6$

Now,

$(f+g)(x)=f(x)+g(x)$

$(f+g)(x)=|x|+9+(-6)$

$(f+g)(x)=|x|+9-6$

$(f+g)(x)=|x|+3$

We know that,

$|x|\geq 0$

Adding 3 on both sides, we get

$|x|+3\geq 0+3$

$(f+g)(x)\geq 3$

So, $(f+g)(x)\geq 3$ for all values of x.

Hence, the correct option is A.

6 0

2 years ago

Help me pls this is urgent ;>

postnew [5]

Answer:

$\frac{ |a + x| }{2} - \frac{ |a - x| }{2} \\ \\ = \frac{ | - 2 - 6| }{2} - \frac{ | - 2 + 6| }{2} \\ \\ = \frac{ | - 8| }{2} - \frac{ |4| }{2} \\ \\ = \frac{8}{2} - \frac{4}{2} \\ \\ = 4 - 2 = 2$

5 0

2 years ago

Help me 6 times 2 (1+3p) it’s algebra

irga5000 [103]

Answer:

12+36p

Step-by-step explanation:

First distribute the 2 to binomial then the 6.

6(2+6p)

12+36p

6 0

2 years ago