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arsen [322]
3 years ago
14

HELP!

Mathematics
2 answers:
Ber [7]3 years ago
5 0

Answer:

U think the answer is C.

Marianna [84]3 years ago
3 0

Answer:

Number of ways of selecting two students is 15

Step-by-step explanation:

number of ways of selecting n out of r  is given by

n_{C_{r} } =\frac{n!}{r!(n-r)!}

It is given that there are 6 seniors on student council.

2 students are selected for district meeting

So we have  n= 6 and r=2

number of ways of selecting two students =6_{C_{2} }

                                                                       =\frac{6!}{2!(6-2)!}

                                                                       =\frac{6!}{2!4!}=15

So we have number of ways of selecting two students is 15

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Vlada [557]
1 yard equals three ft so 26 / 3
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3 years ago
Find the area of a rectangle with a width of x3 + 5x - 9 and a length of x2 + 8.
Drupady [299]

Answer:

A = x⁵ + 13x³ - 9x² + 40x - 72  

Step-by-step explanation:

The formula for the area of a rectangle is length X width, or A = lw.

Substitute the equations for the sides into the formula:

A = lw

A = (x² + 8)(x³ + 5x - 9)      <= use the distributive property

A = x⁵ + 5x³ -9x² + 8x³ + 40x - 72   <= collect like terms

A = x⁵ + 13x³ - 9x² + 40x - 72

4 0
3 years ago
Find the value of w.<br><br><br><br><br><br> w= ?
Stolb23 [73]
W=80
365 subtract by all the other angles
7 0
2 years ago
state the domain, the range, and the intervals on which function is increasing, decreasing, or constant in interval notation
erma4kov [3.2K]

Answer:

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  • range (-∞, 4]
  • increasing (-∞, 0)
  • decreasing (0, ∞)
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Step-by-step explanation:

The graph is of the equation y = -x^2 +4. It is a polynomial of even degree, so has a domain of all real numbers: (-∞, ∞).

The vertical extent of the graph includes y=4 and all numbers less than that:

  range: (-∞, 4]

The graph is increasing to the left of its vertex at x=0, decreasing to the right.

  increasing (-∞, 0); decreasing (0, ∞)

There is no interval on which the function is constant. It has a horizontal tangent at x=0, but a single point does not constitute an interval.

8 0
2 years ago
Assume that y varies inversely as x. If y = 16 when x = 4, find y when x = 6.
iren2701 [21]
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4 0
2 years ago
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