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madreJ [45]
3 years ago
12

Hassan predicted that he would sell 178 postcards. He actually sold 142 postcards. What are the values of a and b in the table b

elow?
Percent Error

Item
Approximate value
Exact value
Error
Absolute error
Ratio
Percent error
Postcards
178
142
a
b


a = negative 36; b = negative 36
a = negative 36; b = 36
a = 36; b = negative 36
a = 36; b = 36
Mathematics
1 answer:
antoniya [11.8K]3 years ago
7 0

Answer:

its b

Step-by-step explanation:

took the test on edge

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(0,1) (3,-8) linear equation
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Answer:

The answer is

y =  - 3x + 1

Step-by-step explanation:

❃Incase you forgot what the linear equation formula is ☟

y = mx + b

❃Incase you also forgot, The is what the slope formula is ☟

m =  \frac{y_2 - y_1 }{x_2 - x_1}

➊ First: We are going to be solving for the slope.

m =  \frac{ - 8 - 1}{3 - 0}  =  \frac{ - 9}{ \:  \:  \: 3}  =  - 3

➋Second: We find the y-intercept.

y = mx + b \\  - 8 =  - 3(3) + b \\  - 8 =  - 9 + b \\   \frac{ + 9 =  + 9 \:  \:  \:  \:  \: }{1 = b}

➌Third: Plug in.

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8 0
3 years ago
Carle is cutting pieces of string that are exactly 24 3/8 inches long. How many pieces can she cut from a ball of string that ha
Fantom [35]
Convert feet to inches
100ft=12*100 =1200 inches

convert 24 and 3/8 to improper fraction
24 and 3/8=24+3/8=192/8+3/8=195/8
195/8 times number of pieces=1200
times bothsides by 8/195 to clear fraction (195/8 times 8/195=1560/1560=1)
number of pieces=9600/195
number of pieces=49.23someting
she can cut 49 complete pieces and 1 partial piece

she can cut 50 pieces but 1 of them is shorter than 24 and 3/8 and therefor doesn't count

she cut 49 pieces
7 0
4 years ago
What another fraction for 3/8
OlgaM077 [116]
6/16 i belive tell me if im right or now
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Step-by-step explanation:

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This is the definition of a point.

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Cheers.

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