The student should have phrased it to be "the difference between the product of 5 and y and 15", as the way the student writes it implies that 5y is being subtracted from 15 instead of the other way around.

5 0

3 years ago

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Divide.(–10m^9 – 4m^8 – 12m6) ÷ 2m^4

AleksAgata [21]

-10m^9 - 4m^8 - 12m^6 - 5m^5 - 2m^4 - 6m^2
-------------------------------- =
2m^4

8 0

4 years ago

Any one good at Geometry? Look at graph below. Write the coordinates of the vertices after a reflection across the y-axis.

Flura [38]

S’(9,-2) T’(9,2) U’(5,2) V’(5,-2)

4 0

3 years ago

A formula is expressed as d=a(2+kt). Express k in terms of d, a and t

taurus [48]

Answer:
k = $\frac{d-2a}{at} = \frac{d}{at} - \frac{2a}{at} = \frac{d}{at} - \frac{2}{t}$ 

Explanation:
To get the value of k, we will need to isolate it on one side of the equation.
This can be done as follows:
d = a(2+kt)

1- get rid of the brackets using distributive property:
d = a(2+kt)
d = 2a + akt

2- Subtract 2a from both sides of the equation:
d - 2a = 2a + akt - 2a
d - 2a = akt

3- Divide both sides of the equation by "at":
 $\frac{d-2a}{at} = \frac{akt}{at}$ 

 $k= \frac{d-2a}{at}$

4- We can further simplify the answer as follows:
k = $\frac{d-2a}{at} = \frac{d}{at} - \frac{2a}{at} = \frac{d}{at} - \frac{2}{t}$

Hope this helps :)

7 0

3 years ago

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