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3 years ago

The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers,

Mathematics

1 answer:

Natalija [7]3 years ago

8 0

The answer is 3km as there is 9 secs between it and distance = time/3 and 9/3 =3 so distance =3

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HELP MATH WHIZZES!! TON OF FREE POINTS, EASY GEOMETRY QUESTION FOR THE RIGHT ANSWER! WHO WILL WIN THIS?! NEED HELP, NOT WRONG AN

Radda [10]

The area of the trapezoid is the product of the height and the average of the two bases:
30 (25 + 33)/2 = 30 (58)/2 = 30 (29) = 870 square yd. 

But we want to exclude the area of the fountain. 
Since it's circular its area is π times the square of its radius, or 16π square yd. 

So the area of the park, excluding the fountain, is 
870 - 16π square yd, 
or about 820 square yd.

5 0

3 years ago

Read 2 more answers

Factor the polynomial function over the complex numbers. f(x)=x^4-x^3-2x−4 Enter your answer in the box. f(x) = The answer is: (

Vladimir79 [104]

Answer:

Factors: $(x+i\sqrt2)(x-i\sqrt2)(x+1)(x-2)=0$

Step-by-step explanation:

We are given a polynomial:

$f(x)=x^4-x^3-2x-4$

We have to factor the given polynomial into its complex factors.

The factorization can be done as follows:

$f(x)=x^4-x^3-2x-4 = 0\\x^4-x^3-2x-4 = 0\\x^4-4-x^3-2x=0\\\text{Identity: }a^2-b^2 = (a+b)(a-b)\\(x^4-4)-(x^3+2x) = 0\\(x^2+2)(x^2-2)-x(x^2+2) = 0\\(x^2+2)(x^2-2-x) = 0\\(x^2+2)(x^2-x-2) = 0\\(x^2+2)(x^2-2x-+x-2) = 0\\(x^2+2)((x(x-2)+1(x-2))=0\\(x^2+2)(x+1)(x-2)=0\\\text{Identity: }a^2-b^2 = (a+b)(a-b)\\(x^2-(\sqrt{-2})^2)(x+1)(x-2)=0\\(x+i\sqrt2)(x-i\sqrt2)(x+1)(x-2)=0$

8 0

2 years ago

Is this triangle congruent by

Alenkasestr [34]

Answer:

SAS

Step-by-step explanation:

8 0

3 years ago

I have 7 mins to turn in, what’s the answer?? thanks :)

Ostrovityanka [42]

Answer:

A) x = 10-/3, y = 20

Step-by-step explanation:

8 0

3 years ago

Please help! Brainliest to correct!

jekas [21]

Answer:

1.83 hours

Step-by-step explanation:

Time is inversely proportional to speed

Implies that T = k/R, where k is the constant of proportionality

Thus, the product T × R is a constant for any given valued of R,T.

Hence, 3 × 14 = t × 23

t = (3×14) ÷ 23

t = 1.83 hours

8 0

2 years ago