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DIA [1.3K]
2 years ago
6

If ab=5 and a*a+b*b=25,then (a+b)(a+b)=?​

Mathematics
1 answer:
rosijanka [135]2 years ago
7 0

Answer:

(a + b) (a + b) = 35

Step-by-step explanation:

{(a + b)}^{2}  =  {a}^{2}  +  {b}^{2} + 2ab \\  \\ (a + b)  (a + b)  = a \ast a + b \ast b + 2ab \\  \\  = 25 + 2 \times 5 \\  \\ 25 + 10 \\  \\  (a + b)  (a + b)  = 35

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Answer:

Please check explanation

Step-by-step explanation:

Here, we want to do a matching.

We shall be matching the given statements with the features we have on the graph

Hence we shall be looking closely at the graph to answer the questions.

The y-intercept is the point at which the graph touches the y-axis

And it was at -3 degrees celsius at the beginning of the day.

The temperature was above zero between 8am and 8pm. The matching statement is that it is increasing or decreasing interval

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Positive or negative interval matches with it was getting warmer between 2am and 2pm.

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3 years ago
If the smallest of three consecutive numbers is k, write the expression for their sum.
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3 years ago
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3 years ago
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A taxi driver provides service in two zones of a city. Fares picked up in zone A will have destinations in zone A with a probabi
sammy [17]

Answer:

The taxi driver's average profit per trip is 4.4.

Step-by-step explanation:

Probability of fares picked up in zone A with destinations in zone A = 0.6

Probability of fares picked up in zone A with destinations in zone B = 0.4

Probability of fares picked up in zone B with destinations in zone A = 0.3

Probability of fares picked up in zone B with destinations in zone B = 0.7

The driver's expected profit for a trip entirely in zone A = 6

The driver's expected profit for a trip entirely in zone B = 8

The driver's expected profit for a trip involving both zones is 12

The taxi driver's average profit per trip:

zone A with destinations in zone A = 0.6 * 6 =  3.6

zone A with destinations in zone B = 0.4 * 12 = 4.8

zone B with destinations in zone A = 0.3 * 12 = 3.6

zone B with destinations in zone B = 0.7 * 8 =  5.6

Total profit expected for 4 trips =                     17.6

Average profit per trip = 4.4 (17.6/4)

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3 years ago
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