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Svetlanka [38]
3 years ago
11

The value of the expression

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
7 0

Answer:

f(5) = 75

Step-by-step explanation:

The function is f(x) = 2x^2 + x(100 - 15x).

Evaluate this function at x = 5:  replace each instance of x with 5:

f(5) = 2(5)^2 + 5(100 - 15·5)

Order of operations rules require evaluating the expression enclosed in parentheses first.  We get:

f(5) = 2(5)^2 + 5(100 - 15·5)

      = 50       + (100 - 75), so that:

f(5) = 50 + 25 = 75

f(5) = 75

damaskus [11]3 years ago
4 0

Answer:

175?

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago
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47. Forming a Committee Four members from a 20-person committee are to be selected randomly to serve as chair- person, vice-chai
Svetllana [295]

Answer:

116,280 different leadership structures are possible

Step-by-step explanation:

The order is important.

For example, a Committee of John, Elisa, Laura and Rose means that John is the chairperson, Elisa the vice-chairperson, Laura the secretary and Rose the treasurer. If we exchange John and Elisa, their roles are also exchanged. This means that we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

P_{(n,x)} = \frac{n!}{(n-x)!}

How many different leadership structures are possible

Permutations of 4 elements from a set of 20. So

P_{(20,4)} = \frac{20!}{(20-4)!} = 116280

116,280 different leadership structures are possible

6 0
3 years ago
17) Convert the number to scientific notation 0.00317
Masteriza [31]

Answer:

3.17x10^-3

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

6 0
4 years ago
Please help me!! Find the slope of the line that passes through (0,2 and (8,8)
aleksklad [387]
C


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4 0
3 years ago
The length of the base of an isosceles triangle is x. The length of a leg is 4x - 6. The perimeter of the triangle is 51. Find x
harkovskaia [24]

Answer:

Step-by-step explanation:

if the base=x

length of one leg is =4x-6

length of the other leg is also =4x-6 (isosceles)

P=x+4x-6+4x-6=51

9x-12=51

9x=51+12

9x=63

x=63/9=7

x=7

6 0
3 years ago
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