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suter [353]
3 years ago
15

Does this equation y=87.2/x represent a direct or inverse variation?

Mathematics
1 answer:
Lorico [155]3 years ago
8 0

Answer:

Inverse relationship

Step-by-step explanation:

The equation we are looking at is;

y = 87.2/x

which implies xy = 87.2

If it was a direct relationship

y = constant * x

if it was inverse, it would have been

y * x = constant

since 87.2 is a constant, the question looks exactly like the second scenario.

This means that what we have is an inverse relationship

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Here are 2 math promblems please help
Verizon [17]

3. The original price of the trampoline is $72

The marked off price is 72 times 70 percent.

72 x .70 = 50.4

The sales tax is 5%

50.4 + 50.4 x 0.05

50.4 + 2.52

52.92

He paid $52.92 in total.


4. A store bought a leaf blower for $48.50 and marked it up 100%

This cost would be 48.5 x 2 which is $97

The sales tax is 6%

97 + 97 x 0.06

97 + 5.82

102.82

The total cost was $102.82

3 0
3 years ago
Find the greatest possible error for the measurement 4.7 cm. 0.05 cm 0.5 cm 1.0 cm
NeTakaya

Answer:

  0.05 cm

Step-by-step explanation:

The least-significant digit in the given measurement is the one in the 0.1 cm number place. The "greatest possible error" is half the value of that number place, so is ...

  (0.1 cm)/2 = 0.05 cm . . . . "greatest possible error"

_____

For questions of this sort, we make the (not always practical) assumption that the measurement is rounded perfectly to the nearest 0.1 cm.

5 0
3 years ago
Solve for x: 5x+3y=15
Gnoma [55]

Answer:

y = (-5/3)x - 5

Step-by-step explanation:

5x + 3y = =15

slope intercept for is: y = mx + b

3y = -5x=15

divide both sides by 3:

y = (-5/3)x - 5

8 0
3 years ago
a random sample of 20 high school students was surveyed and asked "how long does it take you to get ready for school in the morn
Ksivusya [100]

Answer:

where are the choices

Step-by-step explanation:


8 0
3 years ago
Question 101 points)
maw [93]

Answer:

\large\boxed{y=-\dfrac{2}{3}x+\dfrac{13}{3}}

Step-by-step explanation:

\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-slope\\b-y-intercept\\\\\text{The formula of a slope:}\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\\\\===============================

\text{We have the point:}\\\\(5,\ 1)\ \text{and}\ (-4,\ 7).\ \text{Substitute:}\\\\m=\dfrac{7-1}{-4-5}=\dfrac{6}{-9}=-\dfrac{6:3}{9:3}=-\dfrac{2}{3}\\\\\text{We have the equation in form:}\\\\y=-\dfrac{2}{3}x+b\\\\\text{Put the coordinates of the point (5, 1) to the equation:}\\\\1=-\dfrac{2}{3}(5)+b\\\\1=-\dfrac{10}{3}+b\qquad\text{add}\ \dfrac{10}{3}\ \text{to the both sides}\\\\\dfrac{3}{3}+\dfrac{10}{3}=b\to b=\dfrac{13}{3}\\\\\text{Finally:}\\\\y=-\dfrac{2}{3}x+\dfrac{13}{3}

4 0
3 years ago
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