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igor_vitrenko [27]
3 years ago
12

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

Mathematics
2 answers:
k0ka [10]3 years ago
3 0

Answer:

90 is your answer

Step-by-step explanation:

first I just added all similar numbers together, then I added the answers of all the similar numbers together one-by-one, finally we find our answer, 90

nordsb [41]3 years ago
3 0

Answer:

Its 90

Step-by-step explanation:

I used a calc.....

1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7 + 8 + 8 + 9 + 9= 90

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Write a paragraph proof to prove that triangles BHD and FHC are congruent
Katena32 [7]

Answer:

Wdym is there any attachment ?

Step-by-step explanation:

4 0
3 years ago
Pleaseeeeee hellopppppppp!!
Nastasia [14]

Answer:

A. 29

B. 11

C. 10

D. 12

Step-by-step explanation:

A. 180 - 122 = 58

58 divided by 2 = 29

-

B. 180 - 37 = 143

x = 11

5 x 11 = 55

8 x 11 = 88

55 + 88 = 143 + 37 - 180

-

C. the small box in a triangle means right angle = 90

90 - 68 = 22

(2x - 2) we subtract before finding out what x is

22 - 2 = 20

2x = 20 divide by 2  = 10

x is equal to 10

-

D. to find the total, you must figure out what each equation is to add them up to make 180.

(8x + 3) + (2x + 9) + 4x = 180

add up the numbers with x and the numbers without them

14x + 12 = 180

subtract 180 - 12 = 168

168 divided by 14 = 12

x = 12

Hope this helped !!

6 0
3 years ago
The temperature at noon on a winter day was 8°C. At midnight, the temperature had dropped 15°C. What was the temperature at midn
klio [65]
All you have to look at is the word "dropped" and you know it's a subtraction problem. In this case, it would be 8 - 15.

8 - 15 = -7

It would be -7<span>°C at midnight. I hoped this helped! :)</span>
6 0
3 years ago
Sergei says that 10% of a number will always be less than 20% of any other number.
11111nata11111 [884]
That's false.
Let's see an instance:
10% of 300=30
20% of 100=20
It doesn't work here so it's false

5 0
3 years ago
What is the length of LN
Leto [7]
The answer to your problem is 20 inches.
5 0
3 years ago
Read 2 more answers
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