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olga55 [171]
3 years ago
9

7 more than the quotient of a number y and 5​

Mathematics
1 answer:
vaieri [72.5K]3 years ago
3 0

Answer:

7+(y/5)

Step-by-step explanation:

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Let f(x)=x2-3x + 9. Find f(-1).
netineya [11]
X^2 - 3x + 9
(-1)^2 - 3(-1) + 9
1 - 3(-1) + 9
1 + 3 + 9
13
3 0
3 years ago
A committee must be formed with 5 teachers and 4 students. If there are 6 teachers to choose from, and 15 students, how many dif
ZanzabumX [31]

Answer:

8190 ways

Step-by-step explanation:

Given

Teachers = 6

Students = 15

Selection

Students = 4

Teachers = 5

Required

Number of ways of selection

4 students can be selected from 15 students in:

Students= ^{15}C_4

Similarly.

5 teachers can be selected from 6 teachers in:

Teachers= ^{6}C_5

So, the required number of selection is:

Selection = ^{15}C_4 * ^6C_5

Apply combination formula:

Selection = \frac{15!}{(15-4)!4!} * \frac{6!}{(6-5)!5!}

Selection = \frac{15!}{11!4!} * \frac{6!}{1!5!}

Selection = \frac{15*14*13*12*11!}{11!*4*3*2*1} * \frac{6*5!}{1*5!}

Selection = \frac{15*14*13*12}{4*3*2*1} * \frac{6}{1}

Selection = \frac{32760}{24} * 6

Selection = 1365 * 6

Selection = 8190

8 0
3 years ago
In a class of 32 students, the mean height of the 14 boys is 1.56 meters, the mean height of all 32 students is 1.515. Work out
vaieri [72.5K]

Answer:

I'm not sure but I did do it on a calculator so 1.515-1.56= -0.045

6 0
3 years ago
What is the circumference of this circle, in centimeters? Use for .
Orlov [11]

Answer:

what is the circle.

Circumference is diameter x 3.14.

Diameter is the whith of a circle.

Ex. diameter = 4

4 x 3.14 = 12.6cm.

Step-by-step explanation:

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3 years ago
Finding surface area if an triangular prism
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1)find the area of a triangle. Multiply it by 2 or 4 depending on if they are the same size
2)find the area of the base
3)find the area of the other two sides if you haven’t already.
4) add them all together
8 0
3 years ago
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