Proportional and linear functions are almost identical in form. The only difference is the addition of the “b” constant to the linear function. Indeed, a proportional relationship is just a linear relationship where b = 0, or to put it another way, where the line passes through the origin (0,0).
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Answer:
B and D are both true statements
Step-by-step explanation:
A is false. The ratio of green pieces to blue pieces is 7:5 is false as the statement tells us total is 12 when green is 5. This means total is 12.
In the A. statement, it describes green pieces to blue pieces, where blue pieces are more than 5, its order in A states 5 last, meaning blue=5 and this is not true.
B is true. This speaks of the total pieces to blue pieces is 12:7 this is true as it speaks of total first = 12. where blue is also =7. This is true.
C is false. There must be 7 more blue pieces than green pieces this is false as there are two (2)more blue pieces than green, not 7.
D is true. The ratio of total pieces to green pieces is 12:5 is also true as there are 12 total and 5 green and it states this in same order within the statement showing the reverse of the statement in the question where green still is 5 and total is 12.
Answer:
z = 4
Step-by-step explanation:
-7 -7z = -35
-7z = -28
z = 4
Answer:
(x - 3)(x - 7)
Step-by-step explanation:
Please use the symbol " ^ " for exponentiation: x^2 - 10x + 21.
Note that 3*7 = 21 and that 3+7 = 10. These are the clues we need to factor x^2 - 10x + 21. If we factor by grouping, we get:
x^2 - 10x + 21 = (x - 3)(x - 7). Note how -3x and -7x add up to -10 x (as they should), and that -3 times -7 is +21 (as required).