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3 years ago

What is 3+4/5 times 1+1/4

Mathematics

2 answers:

Oksanka [162]3 years ago

8 0

Answer:

0.7

Step-by-step explanation:

3+4=7

7/5=1.4

1+1=2

2/4=0.5

1.4 times 0.5=0.7

Triss [41]3 years ago

4 0

I think the Awnser is 0.7 I’m not sute

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A soccer ball is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 48t where t equals the

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1. The function $h(t)=-16t^{2}+48t$ is a parabola of the form $ax^{2}+bx$ . The the formula for the axis of symmetry of a parabola is $x= \frac{-b}{2a}$ . We can infer from our function that $a=-16$ and $b=48$ , so lets replace those values in our formula:
$x= \frac{-b}{2a}$
$x= \frac{-48}{-2(16)}$
$x= \frac{-48}{-32}$
$x= \frac{3}{2}$
$x=1.5$
We can conclude that to the left of the line of symmetry the ball is reaching its maximum height, and to the right of the line of symmetry the ball is falling.

2. Lets check how much time the ball takes to reach its maximum height and return to the ground. To do that we are going to set the height equal to zero:
$0=-16t^{2}+48t$
$-16t(t-3)=0$
$t=0$ or $t-3=0$
$t=0$ or $t=3$
From our previous point we know that the ball reaches its maximum time at $t=1.5$ , which means that <span>it takes 1.5 seconds to reach the maximum height and 1.5 seconds to fall back to the ground.</span>

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3 years ago

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WHAT IS THE DIFFERENCE BETWEEN RECURSIVE AND EXPLICIT FORMULAS FOR SEQUENCES AND SERIES'?

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Https://www.youtube.com/watch?v=JnCYomYzJSw
this a youtube video that helped me when i needed to do it

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3 years ago

HELP ME!!!!!!!!!!!!!!!!!!!!!!!!

spin [16.1K]

Answer:

The correct option is A

Step-by-step explanation:

Since (1, 3) are the solutions to the function g(x), then

g(x) = (x – 1)(x – 3) = x² –3x – x + 3 = x² – 4x + 3

We know that f(x) is on the same plane and f(1) = 1.

Let's take g(1) = (1 – 1)(1 – 3) = 0

Therefore, when x = 1; f = 1 and g = 0. Hence

g(1) = f(1) – 1

In order words, g(x) could be f(x) – 1.

The correct option is A

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Flura [38]

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2 years ago

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How do I state the number of complex roots, the possible number of real and imaginary roots, and the possible rational roots for

Cerrena [4.2K]

Answer:

$sqt(b^2-4ac)$

Step-by-step explanation:

The expression which is given in the answer is called the discriminant. Because it discriminate all the types of roots which can be derived from any quadratic equation. Now imagine a standard quadratic equation:

$ax^2+bx+c$

The value of x can be derived from quadratic formula which is

x = -b±[(b^2-4ac)^(-1/2)]/2a

Now take out discriminant, which is

$sqrt(b^2-4ac)$

if you put values of a,b and c from a quadratic equation,

you can possibly have three types of discriminant values. Lets represent discriminant as D

So, D can be 0

D can be any real number greater than 0

D can be any real number less than 0

Now we will understand each.

If D = 0, you can see that the both roots will be equal, because in standard quadratic formula, discriminant will make no change either added or subtracted. So we will have equal roots if discriminant is zero. Equal roots means we will only have one value of roots.

If D is any real number greater than zero, it will be simply any real roots. There will be two values of roots, because you will first add up discriminant in quadratic formula and then subtract, because this sign ± means you have two perform both functions one by one.

If D is real number less than 0, we know that by applying square root, it will be converted into an imaginary number, a number with iota, e.g 4i. You will have two imaginary roots here due to this sign ± means you have two perform both addition and subtraction one by one.

Now the complex numbers are basically combination of real and imaginary numbers, so if discriminant has value less than zero, you would have imaginary as well as complex roots and there number will be two because due to this sign ± you have to perform addition and subtraction again.

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3 years ago