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3 years ago

8

Which of the following is equivalent to 3 (small) 4? 7 12 64 81

1 answer:

anygoal [31]3 years ago

4 0

Do you mean 3^4?

If you mean this^ the answer would be 81.

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The probability of a randomly selected car crashing during a year in a certain country is 0.04780.0478. if a family has three th

BabaBlast [244]

We now that the probability that one randomly selected car will crash in the year is <span>0.047800478.
If a family has three cars, this means that the probability that some of their car will crash in the next year is : 3 * the probability that one randomly selected car will crash = 3 * </span><span>0.047800478. = 0.143401434</span>

6 0

3 years ago

Pleaseee helppp mmeeee!

nexus9112 [7]

Answer:

They are both 45 degrees

Step-by-step explanation:

The square in the middle means a right angle (90) and 5 and 6 are equal too so they both equal 45

6 0

3 years ago

A superhero is trying to leap over a tall building. The function f(x)=-16x^2+200x gives the superhero's height in feet as a func

Gemiola [76]

Answer:

Since $\bigtriangleup \geq 0$ , the superhero makes it over the building.

Step-by-step explanation:

The height is given by the following function:

$f(x) = -16x^{2} + 200x$

Will the superhero make it over the building?

We have to find if there is values of x for which f(x) = 612.

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

If $\bigtriangleup < 0$ , the polynomial has no solutions.

In this question:

$f(x) = -16x^{2} + 200x$

$-16x^{2} + 200x = 612$

$16x^{2} - 200x + 612 = 0$

We have to find $\bigtriangleup$

We have that $a = 16, b = -200, c = 612$ . So

$\bigtriangleup = (-200)^{2} - 4*16*612 = 832$

Since $\bigtriangleup \geq 0$ , the superhero makes it over the building.

7 0

3 years ago

Find x. Round the nearest tenth

Evgesh-ka [11]

Answer:

15.9

Step-by-step explanation:

x = 10/ cos 51° = 10/0.629 = 15.9

3 0

3 years ago

A store buys shirts from

Anna007 [38]

Answer:

1.25*12=15

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers