A) 40
B) 30
C) 20
a) 10 and 4
b) 10 and 6
c) 10 and 8
Answers:
C) 20 —-> a) 10 and 4
B) 30 —-> b) 10 and 6
A) 40 —-> c) 10 and 8
Explanation:
20: 10 x 2 = 20 ; 4 x 5 = 20
30: 10 x 3 = 30 ; 6 x 5 = 30
40: 10 x 4 = 40 ; 8 x 5 = 40
Answer:
b. bomb calorimeter
Step-by-step explanation:
A=54. And 24+30=54. So the answer is A
Answer: a=25, 139 degrees, 41 degrees
Step-by-step explanation:
to find a:
180=2a-9+5a+14
180=7a+5
7a=175
a=25
m<ABQ:
5a+14
5(25)+14
125+14
139 degrees
m<BCR:
180-139
41 degrees
I think these are correct but im not completely sure :)
9514 1404 393
Answer:
transitive property of equality
Step-by-step explanation:
The transitive property of equality says ...
if a = b and b = c, then a = c.
Here, we can use this form with ...
a = 2x+4
b = y
c = 3x-6
__
We have ...
a = b ⇒ 2x +4 = y
b = c ⇒ y = 3x -6
so, ...
a = c ⇒ 2x +4 = 3x -6 . . . . transitive property of equality.
_____
On the other hand, ...
The substitution property of equality says ...
if a = b, we can use b wherever 'a' is seen.
We can use this with ...
a = y
b = 3x -6
and do the substitution in the equation ...
2x +4 = y
Replacing y with its equal, we get ...
2x +4 = 'a' ⇒ 2x +4 = 'b' ⇒ 2x +4 = 3x -6 . . . . substitution property of equality
_____
<em>Additional comment</em>
These are two different ways to say that <em>anything can be replaced by its equal</em>.