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3 years ago

The slope of this graph is?

Mathematics

2 answers:

AlexFokin [52]3 years ago

8 0

The equation of the graph is y=-0.4x + 1, therefore the slope is -0.4

AURORKA [14]3 years ago

3 0

The slope of the graph is -1/2 using the rise over run method it rises up one and too the left twice so it would he -1/2

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What is the answer to -10(x+4)+42=-19-19

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Answer:

x=4

Step-by-step explanation:

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2 years ago

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Y are selling lollipops for $0.50 and candy bars for $1.50.

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Answer:

b=8

Step-by-step explanation:

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3 years ago

Keiko has seven colors of lanyard. She uses three different colors to make a keychain. How many different combinations can she c

AleksAgata [21]

Combination = doesn't matter what order
Permutation = order matters

There are <u>two</u> methods to work out combinations.

Method 1 List out possibilities
123 124 125 126 127 134 135 136 137 145 146 147 156 157 167
234 235 236 237 245 246 247 256 257 267
345 346 347 356 357 367
456 457 467
567

For a total of 35 combinations.

Method 2 Use a formula.
It's a rather complicated one, so only use it if you have a lot of possibilities.

$\frac{n!}{r!(n-r)!} = \frac{7!}{3!(7-3)!} = \frac{7!}{3!*4!} = \frac{7*6*5*4*3*2*1}{3*2*1*4*3*2*1} = \frac{7*6*5}{3*2*1}=\frac{210}6=35$

(n is the number of choices, r is the amount you choose, and ! is a function that multiplies together all numbers down to 1)

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3 years ago

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NNADVOKAT [17]

Answer:

3 and 1/2 minus 2/3 minus 1/3 =

7/2 minus 2/3 minus 1/3 =

21/6 minus 4/6 minus 2/6 =

17/6 - 2/6 =

15/6 = 5/2 = 2 and 1/2

Optionally, you can think of it this way:

He used 2/3 yards for the pillow and 1/3 yard for the scarf.

So he used 1 yard

3 and 1/2 minus 1 = 2 and 1/2 = 5/2

Step-by-step explanation:

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