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irinina [24]
3 years ago
11

Help please how do I solve for k

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
7 0
I need to see the rest to solve the k but I know that the direct is 50. is there any other part to it so I can solve it
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The average weight of the class of 35 students was 45 KG. with the admission of a new student the average weight came down to 44
melamori03 [73]

The weight of the new student is 27 kg.

Average weight

= total weight ÷total number of students

<h3>1) Define variables</h3>

Let the total weight of the 35 students be y kg and the weight of the new student be x kg.

<h3>2) Find the total weight of the 35 students</h3>

<u>45 =  \frac{y}{35}</u>

y= 35(45)

y= 1575 kg

<h3>3) Write an expression for average weight of students after the addition of the new student</h3>

New total number of students

= 35 +1

= 36

Total weight

= total weight of 35 students +weight of new students

= y +x

44.5  =  \frac{y + x}{36}

<h3>4) Substitute the value of y</h3>

44.5 =  \frac{1575 + x}{36}

<h3>5) Solve for x</h3>

36(44.5)= 1575 +x

1602= x +1575

<em>Subtract 1575 from both sides:</em>

x= 1602 -1575

x= 27

Thus, the weight of the new student is 27 kg.

7 0
2 years ago
if the perimeter of a rectangular picture frame must be less than 180 in., and the width is 26 in., what must the hight (h) of t
juin [17]
First since the perimeter of this problem is P=2b x 2h I first multiplied 26 by 2 and got 52 inches. then I subtracted 52 from 180 and got 128. From there I divide 128 by 2 and I got 64 for the length
6 0
3 years ago
Emily is entering a bicycle race for charity. Her mother pledges $0.30 for every 0.5 mile she
sashaice [31]

Answer:

The mother will donate $5

4 0
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A biker travels 5 feet in 0.5 seconds. At this exact speed, how far will the biker travel in a minute?
tino4ka555 [31]
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3 years ago
The equation of a line perpendicular to y = 3 and passes through the point (24, -56).
Lera25 [3.4K]

Answer:

x = 24

Step-by-step explanation:

The given line y = 3 is a horizontal line with slope zero (0).

We wish to find the equation of a line that is perpendicular to y = 3.  Such a line would be a vertical one.  Vertical lines do not have slopes defined (due to division by zero).

Thus the general form of the equation of this new line is x = c.

This new line passes through (24, -56).  Thus, x must be 24:  x = 24

3 0
2 years ago
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