Answer:
-8
Step-by-step explanation:
Remember pemdas
7 - 3*(10:2):1 =
7-3*5:1=
7-15:1=
7- 15=
-8
Here you have a system of 2 equations and 2 unknowns. An easy way to solve this type is to isolate one of the variables.
12a + 2b = 8
2b = 8 - 12a
b =

b = 4 - 6a
Now plug 4 - 6a into equation 1 to solve for a.
a + 5(4 - 6a) = 19
a + 20 - 30a = 19
-29a = -1
a = 1/29 (answer)
Now plug a into the equation for b
b= 4 - 6(1/29)
b= 110/29 (answer)
Answer:
triangle ABD> triangle BDC answer is B
Step-by-step explanation:
reason is because A-D is 5 while B-C is 4.5 the other sides are equal so ABD is larger
Answer:
143 because if you subtract 49 and 28 you get 21 the you divide 21 and 1623
Answer:
I think the second one
Step-by-step explanation:
Zero is not a natural number.
It is an integer, rational number ,and whole number