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Mekhanik [1.2K]

3 years ago

8

HURRY PLEAse A plane flies 800,000 meters every hour. the plane leaves at 7 a.m. at what time will the plane have traveled 1,600

kilometer's

2 answers:

katrin [286]3 years ago

8 0

Answer:

9 am

Step-by-step explanation:

o-na [289]3 years ago

5 0

The answer is 9 am hopefully this helps

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A square has a side length of X centimeters. One dimension increases by 4 cm and the other dimension increases by 2 cm, forming

timama [110]

(a) Look at the picture below: we started with the square ABCD, with side length $x$ , and we built the rectangle AEFG such that

$AE=AB+4=x+4,\quad AG=AC+2=x+2$

(b) Since the dimensions of AEFG are $x+4$ and $x+2$ , its area will be the product of its dimensions:

$A=(x+2)(x+4)=x^2+6x+8$

(c) The area $A(x)$ is a function of the side length $x$ :

$A(x)=x^2+6x+8$

(d) Since $A(x)$ is a polynomial with degree 2, it represents a parabola. In order to find the x intercept, we must set $y=0$ :

$x^2+6x+8=0 \iff x=-2\lor x=-4$

Similarly, in order to find the y intercept, we must set $x=0$ :

$A(0)=0^2+6\cdot 0+8=8$

The x-coordinate of the vertex is given by

$x=-\dfrac{b}{2a}=-\dfrac{6}{2}=-3$

And its y coordinate is given by

$A(-3)=(-3)^2+6\cdot (-3)+8=9-18+8=-1$

The line of symmetry is the vertical line passing through the vertex, so it must be

$x=-3$

(see the second picture for the graph)

(e) The graph opens upward. We knew that from the equation, because given a parabola

$y=ax^2+bx+c=0$

its graph will open upwards if $a>0$ , downwards if $a$ . In your case, $a=1$ , so it's positive and the parabola opens upwards.

6 0

3 years ago

The area of a rectangle is equal to its length times its width. If the area of a rectangle

Pepsi [2]

Answer:

d

Step-by-step explanation:

8 0

3 years ago

What is the formula to find the volume in a rectangular

hram777 [196]

Answer:

length times width equals height

3 0

3 years ago

X-9= -6 inverse operation

maria [59]

You would add 9 to -6 and the answer to that is equal to X. X=3

3 0

3 years ago

Read 2 more answers

A political analyst conducted an observational study in 2014 that measured the rate of voter dissatisfaction with the United Sta

Ilia_Sergeevich [38]

Based on the results of the study, the conclusion which is valid is There is correlation between the increase in the rate of televised political attack ads since the previous congressional election and the rate of voter dissatisfaction in the observed districts.

<h3>What does the study conclude?</h3>

The study showed that the rate of voter dissatisfaction in the districts since the previous election cycles is similar to the rate of increase of televised political attack ads.

The fact that both the rate of voter dissatisfaction and televised political attack ads moved together means that they correlate with each other.

It is important to note however, that correlation does not equate causation so there might be no link between the two rates.

Find out more on correlation at brainly.com/question/26998752

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5 0

2 years ago