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kvasek [131]
3 years ago
12

Sean sold half of his comics to buy a game. Later, he bought 7 new comics. How many did he start with if he now has 20:

Mathematics
1 answer:
Solnce55 [7]3 years ago
4 0

Answer:

26

Step-by-step explanation:

20-7= 13 (half his comics) 13+13=26

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3111.5.

Step-by-step explanation:

3112 - 0.5 = 3111.5.

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Find the sum or difference.
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Crazy boy [7]

Answer:

C

Step-by-step explanation:

Blue line:

(-4, 0), (0, -2) \\m = \frac{\triangle y}{\triangle x} = \frac{0 - (- 2)}{-4 - 0} = \frac{2}{-4} = -\frac{1}{2}\\\text{y-intercept (c) is when x = 0}\\x = 0 \rightarrow y = -2\\y = mx + c\\y = -\frac{1}{2}x - 2\\2y = -x - 4\\x + 2y = -4

Red line:

(5, 0), (0, -5) \\m = \frac{\triangle y}{\triangle x} = \frac{0 - (- 5)}{5 - 0} = \frac{5}{5} = 1\\\text{y-intercept (c) is when x = 0}\\x = 0 \rightarrow y = -5\\y = mx + c\\y = 1x - 5\\y - x = -5\\-y + x = 5\\x - y = 5

5 0
2 years ago
The mayor of the city of San Diego wants to increase taxes to invest in a modern transit system. She hires a polling agency to s
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Answer:

Step-by-step explanation:

Part A: What is the population in this survey?

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Part B: What is the population parameter

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