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3 years ago

If there are 40 entries in a science fair how many ways can the students finish 1st, 2nd, and 3rd

Mathematics

1 answer:

ohaa [14]3 years ago

8 0

The answer is 59,280 . To find you multiply 40 x 39 x 30 which 59,280

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Find either the maximum or the minimum value of the following quadratic equation. Be sure to show all of your work and identify

podryga [215]

Answer:

the minimum is (1,-9)

Step-by-step explanation:

y = 5x^2 - 10x - 4

since the parabola opens upward 5>0, this will have a minimum

it will occur along the axis of symmetry h=-b/2a

y =ax^2 +bx+c

h = -(-10)/2*5

h = 10/10 =1

the minimum occurs at x =1

the y value for the minimum is calculated by substituting x =1 back into the equation

y = 5 * 1^2 - 10*1 -4

y = 5*1^2 -10 -4

y = 5-10-4

y = -9

the minimum is (1,-9)

6 0

3 years ago

We can find the length of DE using the Pythagorean Theorem:

prohojiy [21]

What's the difference between A) and C)??
There should be an E) because the correct answer would be in either of these forms:
${DE}^{2} = {(4 - 1)}^{2} + {(1 - 3)}^{2} \: \: or \\ DE = \sqrt{( {3}^{2} + {2}^{2} )} \: \: or \\ {DE}^{2} = {(4 - 1)}^{2} + {(3 - 1)}^{2}$

6 0

3 years ago

Read 2 more answers

Evaluate b²c¹ for b=8 c=-4

AVprozaik [17]

Answer:

The answer is -256.

Step-by-step explanation:

You have to substitute the value of b and c into the expression :

${b}^{2} {c}^{1}$

Let b = 8,

Let c = -4,

${8}^{2} \times { - 4}^{1}$

$= 64 \times - 4$

$= - 256$

8 0

3 years ago

The loudest insect on Earth is the African cidada

igor_vitrenko [27]

Wrong subject, but that is true. You should have information to back that up also.

5 0

3 years ago

1 Example of linear absolute value equation & linear absolute value inequality

krek1111 [17]

Example:
Linear absolute value inequalities all have a similar equation of |ax + b| < c, except they can be less than, greater than, less than or equal to, or greater than or equal to.
Hope this helped :)

5 0

3 years ago