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GREYUIT [131]
3 years ago
15

How many ways can a president, vis-president and treasurer be selected from a group of 15 students?

Mathematics
1 answer:
dybincka [34]3 years ago
8 0

Answer:

455ways

Step-by-step explanation:

This is expressed as 15 C 3 ( C- combination)

The concept of combination is used when we talk about selection.

Now we are selecting 3 from a sample of 15

15 C 3 = 15! / (15-3)! 3! = 15 ×14×13×12!/12!×3×2

= 5 × 7 × 13 = 455ways

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A circle has a diameter of 40 in. Find the circumference of the circle to the nearest tenth. Use 3.14 for pi .
Lesechka [4]

Answer:

126 inches

Step-by-step explanation:

C = 2π·r = π·d = 3.14×40in = 125.6 inches ≈ 126 inches

6 0
3 years ago
A pudding recipe requires 2/3 of a cup of milk for every 1 3/4 cups of sugar. What is the unit rate of sugar to milk in the pudd
Zinaida [17]

Answer:

2 5/8 to 1.

Step-by-step explanation:

That would be 1  3/4 divided by 2/3.

= 7/4 / 2/3

= 7/4 * 3/2

= 21 / 8

= 2 5/8

Answer 2 5/8 to 1.

8 0
3 years ago
Jenny’s great grandmother is 90 years old Jenny is 12 years old. What percent of Jenny’s great grandmothers age is Jenny age
Bogdan [553]
To find Jenny's age as a percentage of her great grandmother's age :

\dfrac{12}{90} \times 100

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7 0
3 years ago
Megan purchased a new gadget for her technology hobby. She plans to sell it sometime in the future, however, its value depreciat
Inga [223]
M represents the month because the value is decreasing every month.

Hope this helps :)
5 0
3 years ago
Read 2 more answers
8
blagie [28]

Answer:

The new function is g(x) = x² +1

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the function f(x) = x²

From graph ,

The parabola  y = x² is shifting to up with '1' units

                    y = x² +1

The new function is g(x) = x² +1

<u><em>Verification:-</em></u>

    y = x²+1

Put x=0 ⇒ y =1

The point (0,1) lies on the parabola y = x²+1

similarly put x =1 and y = 2

The Point (1,2) lies on the Parabola y = x²+1

∴ The new graph  y = x²+1

3 0
3 years ago
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