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3 years ago

One side of a square is 5n inches long. Another side is n + 16 inches long. How long is a side of the square?

Mathematics

2 answers:

just olya [345]3 years ago

7 0

I agree! The answer would be C the others don't make sense when worked out

LiRa [457]3 years ago

5 0

Its a square.
So 5n = n + 16
Therefore 4n = 16 (taking one n from each side).
So n = 16/4 which is simplied as : 4.
Double check by putting 4 in the equation where n is, and it makes sense, so that is the right answer.
Your answer is c.

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− 6/b −50=-49 what is b

Sedbober [7]

Answer:

-6

Step-by-step explanation:

-6/b-50=-49

step1;collect like terms

-6/b=-49+50

-6/b=1

step2;cross multiply

-6/b=1

-6=1b(1b can also be regarded as b)

b=-6

6 0

3 years ago

The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is

iren [92.7K]

Answer:

The temperature is increasing at the rate of 6.5 degree celcius per second.

Step-by-step explanation:

We are given the following information:

Temperature of a point is given by T(x,y)

After t seconds a bug reaches a point $x = \sqrt{2 + t}, y = 3 + \frac{1}{2}t$

At t = 2, x = 2, y = 4

The temperature function satisfies:

$T_x(2,4) = 8\\T_y(2,4) = 9$

We have to find:

$\displaystyle\frac{dT}{dt} = T_t(x(t), y(t))\\\\= T_x(x(t),y(t)).x'(t) + T_y(x(t),y(t)).y'(t) \\\\= T_x(x(t),y(t)).\displaystyle\frac{1}{2\sqrt{(t+2)}} + T_y(x(t),y(t)).\displaystyle\frac{1}{2} \\\\\displaystyle\frac{dT(x,y)}{dt}_{at~t=2} = \displaystyle\frac{dT(2,4)}{dt}_{at~t=2} = 8.\displaystyle\frac{1}{4} + 9.\displaystyle\frac{1}{2} = 2 + 4.5 = 6.5$

Hence, the temperature is increasing at the rate of 6.5 degree celcius per second.

3 0

4 years ago

Graph the line that represents a proportional relationship between ddd and ttt with the property that an increase of 3 units in

Pepsi [2]

Answer:

a) The unit rate of change of d with respect to t is equal to 1.6

b) the graph of the line in the attached figure.

3 0

3 years ago

Read 2 more answers

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Paha777 [63]

Answer:

£13860.44

Step-by-step explanation:

59.95 / 5 = 11.99

£11.99 for 1 day

11.99 * 1156 = 13860.44

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shepuryov [24]

Answer:

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Step-by-step explanation:

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