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kicyunya [14]
2 years ago
7

Evaluate the expression 5k2 - 7k when k = 3

Mathematics
2 answers:
VikaD [51]2 years ago
4 0

Answer:

24

Step-by-step explanation:

In this question, you have to solve by plugging in the value to the "k" variable and solve.

Solve:

5(3)^2 - 7(3)

3^2 = 9

5(9) - 7(3)

45 - 7(3)

45 - 21 = 24

Your final answer would be 24.

makkiz [27]2 years ago
4 0

Answer:

24

Step-by-step explanation:

5(3)^2 - 7(3)

5(9) - 21

45 - 21

24

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Evaluate the expression (3.2)².​
Ludmilka [50]

Answer:

36

Step-by-step explanation:

3*2=6

6^2=6*6

=36

7 0
2 years ago
Arun took a taxi from his house to the airport. The taxi company charged a pick-up fee of $4 plus $4.25 per mile. The total fare
Natasha2012 [34]

Here we must write and solve a linear equation to find the number of miles that Arun traveled in the taxi. We will find that Eva traveled 11 miles.

So we know that the taxi charges a fee of $4.10 and then a plus of $0.50 per mile.

So if you travel for m miles, the cost equation is:

C(m) = $4.10 + $0.50*m

Now, we know that for Eva the total fare (total cost) was $9.60, then we need to solve:

$9.60 = C(m) = $4.10 + $0.50*m

$9.60 = $4.10 + $0.50*m

$9.60 - $4.10 = $0.50*m

$5.50 = $0.50*m

$5.50/$0.50 = m = 11

This means that Arun traveled 11 miles in the taxi.

5 0
2 years ago
How can you use a number line to find the sum of -4 and positive 6
MrRissso [65]
Start at -4 and go over to the right 6. - is left and +is right. the answer is 2.
3 0
3 years ago
What are means of 8/3 = 2/n
Alexus [3.1K]

Answer:

8/3=2/0.75

Step-by-step explanation:

The variable that you are looking for should be the simplified version of the number on the left.

That is where the 2 would come in. Both numbers should be divided by 4 to gat the answer.

8÷4 = 2

3÷4=0.75

5 0
3 years ago
What is the interquartile range of this set of data? 15, 19, 20, 25, 31, 38, 41
Irina18 [472]
First, you have to find the median, which is the number in the middle: 25

Then cut the data in half by the median, so your new data sets are
15,29,20
    and 
31,38,41

Now you find the median of both of those sets, which is 29 and 38.

The interquartile range is the difference between the numbers, so 38-29 = 9.
8 0
3 years ago
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