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3 years ago

Don’t understand b) pls explain

Mathematics

2 answers:

Arturiano [62]3 years ago

6 0

Answer:

Below in bold.

Step-by-step explanation:

-(s - t) - (s - t)^2 Take out (s - t):

= (s - t)( -1 - (s - t)

= (s - t)(t - s - 1). <---- Factored form.

Or, if you want to expand the expression:

-(s - t) - (s - t)^2

= - s + t - (s^2 - 2st + t^2)

= -s^2 + 2st - t^2 - s + t.

ioda3 years ago

4 0

Answer:

−s2+2st−t2−s+t

Step-by-step explanation:

−(s−t)−(s−t)2

distributed would be

−s+t+−s2+2st+−t2

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Evaluate the value of x to 1 d.p Thank you

Keith_Richards [23]

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value of x = 2.8

Step-by-step explanation:

By law of cosines,

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3 years ago

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leonid [27]

Answer:

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3 years ago

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3 years ago

PQ is rotated 180 degrees clockwise about P. What are the coordinates of P' and Q'?

Salsk061 [2.6K]

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Explanation

PQ is rotated 180 degrees clockwise about P. It means P and P' are the same points.

According to the graph, the coordinates of P is (-7, -2) and Q is (2, 4)

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Suppose, the co ordinate of Q' is (x, y)

Now according to the mid-point formula, the coordinate of P or P' will be: $(\frac{x+2}{2},\frac{y+4}{2})$ , which is actually at (-7, -2)

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3 years ago

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nikdorinn [45]

Answer:

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3 years ago