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morpeh [17]
3 years ago
6

How many combinations of 6 students can a teacher choose from 30 students?

Mathematics
1 answer:
neonofarm [45]3 years ago
6 0

Answer: 593775

Step-by-step explanation: 30C6 =30x29x28x27x26x25 / 6x5x4x3x2x1 =593775

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Cathy is paid at a rate of K7.20 per hour for a basic hour-week of 70 hours. She is paid time-and-a-half for over-time during th
Levart [38]

Answer:

K1310.4

Step-by-step explanation:

Basic pay per hour = K7.20

Overtime pay during the week per hour = 1 1/2 * K7. 20 = K10.8

Weekends = 2 * K7.20 = K14.4

Basic hours per week = 70 hours

In a fortnight :

Basic hours = 70 * 2 = 140 hours :

Hence, Overtime during the week = (160 - 140) = 20 hours

Weekend hours = (4 +2) = 6 hours

Total earning :

(140 * 7.20) + (20 * 10.8) + (6 * 14.4)

1008 + 216 + 86.4

= K1310.4

5 0
3 years ago
What is the equation of this line?
Juli2301 [7.4K]

Answer:

Not sure but i think its C. y=-2x-3


8 0
3 years ago
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If 10x+3y=38 and -2x+13y=50 what is the value of -x+2y
amid [387]

Answer:101/17

Step-by-step explanation:

5 0
3 years ago
Destiny has 6 library books on her desk. One third of them are about animals. How many of Destiny’s library books are about anim
Marta_Voda [28]
| shade  |               |               |       Each rectangle stands for one third so shade 
|  this     |               |               |         only one rectangle.
|    one   |               |               |         And one rectangle has two books in it (you
|             |               |               |         divide 6 by 3 to get 2). 
|             |               |               |
|             |               |               |
|             |               |               |
3 0
3 years ago
The perimeter of a rectangle table is 680 cm if the length of the table is 24 cm more than the race the width of the table find
postnew [5]

Answer:

Length is 182 cm and width is 158 cm.

Step-by-step explanation:

Given:

Perimeter of rectangle table = 680 cm.

Let the width of the table be x.

Now according to given length of the table is 24 cm more than the race the width

hence length = 24+x.

But perimeter of rectangle = 2(length+width)

Substituting the values we get;

2(24+x+x)=680\\24+2x=\frac{680}{2}\\\\24+2x=340\\2x=340-24\\2x=316\\\\x= \frac{316}{2}=158 \ cm

Hence width = 158 cm

Now, length = 24 cm + width = 24 cm + 158 cm = 182 cm

Hence the dimension of table are 182 cm and 158 cm.

5 0
3 years ago
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