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lisabon 2012 [21]
3 years ago
10

Help pls. need this question answered asap

Mathematics
1 answer:
Dmitry [639]3 years ago
8 0
The answer is actually 15
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If y varies directly as​ x, and y=8 when x=3​, find y when x=15.
Crank

Answer:

y=40

Step-by-step explanation:

The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!

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3 years ago
Estimate f 3.85 given that f 4 )= 2 and f '( 4 )= 3
Vinvika [58]
The answer is B hope this helped
5 0
3 years ago
I need help with this question I would be grateful really
andreyandreev [35.5K]

Answer:

B

Step-by-step explanation:

B

the vertex is (-5,-2) which eliminates A and C. D says that the x intercepts are both positive which is obviously incorrect making B the correct answer

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3 years ago
Ann is using a recipe that serves 20 people. the recipe requires 1/2 of a cup of sugar. how many cups of sugar does ann beed to
Setler [38]

Answer:

1 1/4 cup

Step-by-step explanation:

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A line segment is drawn from (4, 1) to (4, 5) on a coordinate grid.
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