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Butoxors [25]
2 years ago
13

Greg saves $15 every week. What expression would represent the amount of money in dollars Greg will save in W weeks?

Mathematics
2 answers:
Tatiana [17]2 years ago
6 0

Answer:

15W

Step-by-step explanation:

$15 is the amount he plans to save every week (constant), the W will represent the number of weeks

sleet_krkn [62]2 years ago
4 0

Answer:

15w

Step-by-step explanation:

w is the unknown amount and every week greg saves 15. So the equation would be 15w.

You can plug a number to check in for example 5. He would save $75.00 in 5 weeks.

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Juan ran of a mile 2/5 every 4/7 of an hour. Find Juan’s rate in miles per hour
AfilCa [17]

Answer:

Juan runs 7/10 of a mile every hour

Step-by-step explanation:

First find out how much he ran every 1/7 of an hour

2/5 x 1/4 = 4/7 x 1/4

1/10 = 1/7

1/10 x 7 = 1/7 x 7

7/10 = 1

8 0
2 years ago
2. Sally has 8x dollars. Amanda has $12 more than Sally. Lucy has 3x dollars less than Amanda.
adell [148]

Answer:

Sally=8x

a.Amanda=8x+12

b.Lucy=8x+12-3x

=5x+12

c.if x=6

Lucy=5(6)+12

=30+12

=42

5 0
3 years ago
How can you tell if the slope of a tangent line belongs to a certain interval?
Mila [183]

The slope of the function is given by its derivative. You want to find the values of x such that the derivative is between -1 and 1.

... f'(x) = 0.4x +5

... -1 < 0.4x +5 < 1 . . . . . your requirement for slope

... -6 < 0.4x < -4 . . . . . . subtract 5

... -15 < x < -10 . . . . . . . multiply by 2.5


Any value of x that is between -15 and -10 will be one where the tangent line has a slope between -1 and 1.


_____

The graph shows tangent lines with slopes of -1 and +1. You can see that the slope of the graph of f(x) is between those values when x is between the tangent points.

5 0
3 years ago
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110
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