(2 + a) = (a + 2) it's commutative property
(a + 2) - 7 = a + (2 - 7) it's associative property
2 - 7 = -5 it's subtraction
Answer: distributive property { a(b + c) = ab + ac }
BTW,
KEY:
• exponents are going to be written as “^(x)”.
• if I put “huh” or “nope” or “what” (etc.) that means I don’t know how to solve it.
1. 49a
2.-15x^(2)+2y^(2)
3.-23a+2b+6
4. 0
5.-9c+3d
6. 4a+14b+c
7.-6a+2b+62
8.-3x+8
9. 16x^(2)-y+x+z
10.-6x
11.-8xy+2
12.-15a+3b
13. nah bruh
14. nope
15. 1.5a
16. -10a-2205
17. -4cd+55
18.-4x+2y+3
19. -67,209
20. huh?
21. what??
22. 18a+4b
23. 8y+3x+6
24.-2x+2y+6r+2
25. 4a^(2)+2a+2b+3
Answer: 401.952380952
Step-by-step explanation:
Answer: year 1948
Step-by-step explanation:
1900 is our t = 0
The population of Greenville can be written as:
G = 4000 + 100*t
the equation for Springfield can be written as:
S = 1000*(1.04)^t
we want to find the value of t that makes S(t) = G(t)
4000 + 100*t = 1000*(1.04)^t
(4000 + 100*t) = 1.04^t
4 + 0.1*t = 1.04^t
now, you can graph both of this equations (left side and right side) and see in wich value of t the graphs intersect eachother, or you also may use different values of t until the values are about the same for both sides, which is the thing i did with the equation:
4 = 1.04^t - 0.1*t
You will find that the correct value is t = 48
So we can assume that in year 1948 the populations will be about the same.
