Which of the following is equivalent to 2x(4x3)

Find the dimension of vector space of differential equation

Zepler [3.9K]

Distance and direction

5 0

4 years ago

PLEASE HELP THIS IS REALLY IMPORTANT

Svet_ta [14]

Answer:

a) $x^2-x-20\\$

b) what?

c) -70

Step-by-step explanation:

If you have any questions feel free to ask in the comments - Mark

sorry for the terrible answer

3 0

3 years ago

Which graph represents an exponential function?

geniusboy [140]

Answer:The function that represents an exponential function is the 4th graph and it can be modeled as y = aeᵇˣ.

What are exponential functions?

The exponential functions are written in the form of y = aeᵇˣ, where the output y increases exponentially for the input x.

In order to find the graph that represents an exponential function, we will discuss each of the following graphs,

For the 1st graph, (Black),

In the first graph, the graph is of a parabola, and the function which represents this kind of graph is a quadratic equation, therefore, this graph represents a parabolic equation. It is given by the function,

y=ax²+bx+c or y=a(x-h)²+k

For the 2nd graph, (Red),

In the second graph, the graph represented is the graph of a reciprocal function, the function that can be represented by the graph,

y=a/x + b

For the 3rd graph, (Blue),

In the third graph, the graph represented is the graph of root function, it can be modeled as,

y = a+√(x+b)

For the 4th graph, (Green),

In the fourth graph, the graph represented is the graph of an exponential function, and it can be modeled as,

y = aeᵇˣ

Hence, the function that represents an exponential function is the 4th graph and it can be modeled as y = aeᵇˣ.

Step-by-step explanation:

7 0

2 years ago

FIND THE AREA OF THE REGULAR POLYGON. ROUND TO THE NEAREST TENTH. <br><br> HELP IM CONFUSED!!

Alex17521 [72]

Answer:

half the diagonal is given as 7 yards, the full diagonal would be 7 x 2 = 14 yards.

The formula for the length of a side of a square using just the diagonal is:

Side = √2(d/2)

Side = √2 (14/2)

Side = √2(7)

Side = 9.9 yards.

The area of a square is S^2

Area = 9.9^2

Area = 98.01

Area = 98.0 Yards^2

8 0

3 years ago

In a normally distributed data set a mean of 55 where 99.7% of the data fall between 47.5 and 62.5, what would be the standard d

NeX [460]

Given that normally distributed data set has a mean of 55 and 99.7% of data fall between 47.5 and 62.5.

Let s be the standard deviation of data set.

Since 99.7% data fall within 3 standard deviations of mean, z-value for 47.5 and 62.5 has an absolute value of 3.

That is |z|=3

But z= $\frac{x-mean}{standard deviation}$

Let us plugin x=47.5 and mean =55 and equate it to 3.

That is $|\frac{47.5-55}{s}| = 3$

$|\frac{-7.5}{s} | =3$

Since x is always positive ( being standard deviation), $|\frac{-7.5}{s} | = \frac{|-7.5|}{s} = \frac{7.5}{s}$

Hence $\frac{7.5}{s}= 3$

$s=\frac{7.5}{3} = 2.5$

We will get same value with 62.5 as well.

Hence standard deviation of data set is 2.5.

3 0

4 years ago