Answer:
23: 21
25: 1
Step-by-step explanation:
<u>Question 23</u>:
1) add the whole numbers together: 15+5=20
2)To add fractions, both need to have the same denominator. Find a number that is a multiple of both denominators (in this case 55)
→ 
(multiply the numerator and denominator by 5)
→ 
(multiply the numerator and denominator by 11)
3) add the fractions together
+ = 
(add the numerators)
4) Turn the improper fraction into a mixed number
Divide 78 by 55. You'll get a whole number and a remainder. The remainder is the new numerator: In this case 55 enters 78 once with a remainder of 23. Therefore:
1
5) Add the whole numbers together to get the final answer:
20+1= 21
Answer: 21
<u>Question 25</u>:
Follow the above steps but subtract instead of adding
The best estimate would be (-1)(1/2)(-1)(1)
Why?
(-4/5) = Really close to -1. The fraction -5/5 would = -1
(3/5) = Really close to 1/2
(-6/7) = Really close to -1. It is just -1/7 from being from -1
(5/6) = Really close to 1. It is just 1/6 from being 1
A) 105 degrees
B) 75 degrees
C) 105 degrees as well
1. c i think. 2. its b i think 3.a thats all i know im sorry
Step-by-step explanation:
-4x – 2y= -18
Add 2y to both sides
-4x- 2y+ 2y = -18 + 2y
Simplify
-4x = -18 + 2y
Divide both sides by -4
-4x/-4= -18/-4+ 2y/-4
simplify
x= - -9+y/2
