Please answer ASAP please and thank you

27/10

Step-by-step explanation:

You want to get a common denominator in order to add them together.

First:

    Convert the whole numbers to fractions, 4 = 8/2

         4 1/2 = 9/2

     And 1 = 10/10

         1 8/10 = 18/10

Then find the common denominator:

The least common multiple of 2 and 10 is 10. So:

convert 9/2 to a denominator of 10 : 9*5 / 2*5 = 45/10

Subtract:

45/10 - 18/10 = 27/10

27/10

Step-by-step explanation:

1. Change the mixed fractions to improper fractions

9/2 -9/5

2. Find the LCD, 10

3. multiply to get the denominator to 10

45/10 - 18/10

4. Deal with the numerators 45-18=27

5. 27/10

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation: