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1 year ago

What is the value of the following expression? 23 + 5 • (10 - 9) - 12

Mathematics

1 answer:

prohojiy [21]1 year ago

3 0

Answer:

Step-by-step explanation:

Use the method of PEMDAS (Parenthesis, Exponent, multiplication, division, addition and then subtraction.)

When using this order you would do 10-9 first

23 + 5 * (10-9) - 12

23+ 5 * 1 - 12

then 5 times 1

23 + 5 * 1 - 12

23 + 5 - 12

then 23 + 5 and subract 12 from the solution

23 + 5 - 12

28 - 12 =

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1 year ago

AB = 2x – 17, AC = 14, and BC = x + 1. Find x.

Volgvan

9514 1404 393

Answer:

x = 10
AB = 3
BC = 11

Step-by-step explanation:

If B lies between A and C on a line segment, then ...

AB +BC = AC

(2x -17) +(x +1) = 14

3x = 30 . . . . . . . . . . . . . add 16, collect terms

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