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Lorico [155]
3 years ago
14

Elizabeth ran 2.7 kilometers in the morning and 2.52 kilometers after lunch. Adrian ran 3.064 kilometers at night. How much fart

her did Elizabeth run then Adrian? *
Mathematics
1 answer:
Ludmilka [50]3 years ago
3 0

Answer:

2.7+2.52=5.22-3.064

=2.16km

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Which graft represent -3x+5y=-15
azamat

The graph of the function -3x+5y=-15 is a linear function we can draw it by finding the values of y for every value of x.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have a function:

-3x + 5y = -15

The above function shows a linear function we can write it as:

5y = 3x - 15

y = (3x - 15)/5

If x = 0, y = -3

x = 1, y = -2.4

x = 2, y = -1.8

x = -1, y = -3.6

x = -2, y = -4.2

Thus, the graph of the function -3x+5y=-15 is a linear function we can draw it by finding the values of y for every value of x.

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brainly.com/question/5245372

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2 years ago
C + d = 60<br> 2.5c + 1.75d = 123.75
likoan [24]

Answer:

  (c, d) = (25, 35)

Step-by-step explanation:

Multiply the first equation by 2.5 and subtract the second one:

  2.5(c +d) -(2.5c +1.75d) = 2.5(60) -(123.75)

  0.75d = 26.25 . . . . . . . . . simplify

  26.25/0.75 = d = 35 . . . . divide by the coefficient of d

  60 -d = c = 25 . . . . . . . . . use the first equation to find c

(c, d) = (25, 35)

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What is sin 78° rounded to the nearest hundredth
e-lub [12.9K]
Use a calculator. The sine of 78 degrees is .98.
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shirin bought a fruit smoothie. she paid $5.40 plus sales tax. the sales tax was %5. how much does she pay in sales tax?
Kitty [74]

Answer:

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Step-by-step explanation:

5%of 5.40

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3 years ago
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A rectangular tank with a square​ base, an open​ top, and a volume of 8 comma 7888,788 ft cubedft3 is to be constructed of sheet
Vlad [161]

Answer:

  26 ft square by 13 ft high

Step-by-step explanation:

The tank will have minimum surface area when opposite sides have the same total area as the square bottom. That is, their height is half their width. This makes the tank half a cube. Said cube would have a volume of ...

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The square bottom of the tank is 26 ft square, and its height is 13 ft.

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<em>Solution using derivatives</em>

If x is the side length of the square bottom, the height is 8788/x^2 and the area is ...

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The derivative of this is zero when area is minimized:

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As the attached graph shows, a graphing calculator can also provide the solution.

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