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Advocard [28]
3 years ago
11

How many of the numbers from 10 through 98 have the sum of their digits equal to a perfect​ square?

Mathematics
1 answer:
Rama09 [41]3 years ago
6 0
There are 14 numbers
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Simplify 2m - [n - (m - 2n)].<br> -3m - n<br> 3m - n<br> -3m - 3n<br> 3m - 3n
Jobisdone [24]
You get 2m+m-3n which simplifies to    3m-3n
5 0
3 years ago
sThe number of users on a social networking site was 45 thousand in February when theyofficially went public, and grew to 60 tho
svetoff [14.1K]

Given:

No of users in February is 45,000 and in october its 60,000.

P=45000(\frac{4}{3})^{(\frac{3}{2})^t}

t=2

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6 0
1 year ago
Solve for x: 4 over x plus 4 over quantity x squared minus 9 equals 3 over quantity x minus 3
dezoksy [38]

Answer:

Step-by-step explanation:

4/x + 4/(x²-9) = 3/(x - 3) 

4 / x + 4 / [( x - 3) ( x + 3 )] = 3 / ( x - 3 )  / * x ( x - 3 ) ( x + 3 )

Restrictions : x ≠ 0,  x ≠ - 3 ,  x ≠ 3;

4 ( x + 3 ) ( x - 3 ) + 4 x = 3 x ( x + 3 )

4 ( x² - 9 ) + 4 x = 3 x² + 9 x

4 x² - 36 + 4 x - 3 x² - 9 x = 0

x² - 5 x - 36 = 0

x² - 9 x + 4 x - 36 = 0

x ( x - 9 ) + 4 ( x - 9 ) = 0

( x - 9 ) ( x + 4 ) = 0

x - 9 = 0,  or : x + 4 = 0

Answer:

x = 9,  x = - 4

4 0
3 years ago
PLEASE HELP ME !!!!!!
Ad libitum [116K]

Step-by-step explanation:

In this question as two straight lines intersect each other

we use vertically opposite angle axiom

so 74 degree = 2x.

then x= 74/2= 37degree

6 0
2 years ago
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Yup help. help no links plssss
seraphim [82]

Answer:

4.103, 4.13, 4.1, 4.1031

Step-by-step explanation:

4 0
3 years ago
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