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Andreas93 [3]
3 years ago
15

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

Mathematics
2 answers:
IRISSAK [1]3 years ago
7 0
Huh, well the sum is just adding the numbers together, so the answer is 4905.
Lesechka [4]3 years ago
3 0
This took forever to do but 176879
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A rectangle has an area of 12y^2+21y^512 y 2 +21y 5 12, y, squared, plus, 21, y, start superscript, 5, end superscript.The width
umka21 [38]

Answer:

<em>Width</em>: 3y²

<em>Length</em>: 4 + 7y³

Step-by-step explanation:

The area of the rectangle is the length multiplied by the width. For the area given: 12y² + 21y⁵

12y² = 3y²*4

21y⁵ = 3y²*7y³

So, the greatest common monomial factor is 3y², which is the width.

The area is 3y²*(4 + 7y³), the first term is the width, the other must be the length: 4 + 7y³.

8 0
3 years ago
Kyla ran 4 laps around a track in 168.4 seconds. If she ran each lap in the same amount of time, how many seconds did it take Ky
ArbitrLikvidat [17]
168.4 / 4 = 42.1 seconds per lap
5 0
3 years ago
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The Side-Angle-Side Similarity Postulate states “If the measures of 2 sides of a triangle are proportional to the measures of 2
Alenkinab [10]
True, hope this helps
5 0
3 years ago
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Why is 4 4/10 greater than 32/10?
Elena-2011 [213]

Answer:

Because

Step-by-step explanation:

4 4/10 = 4.4  and  32/10 = 3.2

4.4 is bigger than 3.2 so that's why 4 4/10 is bigger.

7 0
3 years ago
1)bir üçgenin kenar uzunlukları 2,3ve4 ile ters orantılıdır.üçgenin çevresi 39 cm olduğuna göre en uzun kenarı kaç cmdir?
goldenfox [79]
1. 
The edge lengths of a triangle are inversely proportional to 2,3 and 4.
The actual proportions of the lengths are then
12(1/2:1/3:1/4)=6:4:3
The longest side 
= 39* (6/(6+4+3)
= 39*6/13
=18

2. 63 breads : 35 kg flour
is the same as 
54 breads : x kg flour
Cross multiply and get
x=54*35/63=30
30 kg of flour are needed to make 54 breads.
3 0
3 years ago
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