All categories

3 years ago

B²+ 6-2please answer

Mathematics

2 answers:

Aneli [31]3 years ago

7 0

Answer:

$b^{2} +4$

Step-by-step explanation:

Simplify by combining like terms. (:

baherus [9]3 years ago

3 0

Answer:

b^2+4

Step-by-step explanation:

Just combine like terms.

b^2+(6-2)=b^2+4

You might be interested in

When running a half marathon (13.1 miles), it took Mark 6 minutes to run from mile marker 1 to mile marker 2, and 20 minutes to

Nadusha1986 [10]

Answer:

From mile marker 1 to mile marker 4 26 minutes

The average speed was 0,115 miles/minute

From mile marker 9 to finish the race average speed was 0,105 miles/minute

Step-by-step explanation:

Mark took 6 minutes from marker 1 to marker 2 ( 1 mile in 6 minutes)

and 20 minutes from marker 2 to marker 4 ( 2 miles in 20 minutes )

Then Mark took 26 minutes to get to marker 4 from marker 1 ( 3 miles)

then average speed is 3 / 26 = 0,115 miles/minute

71 minutes after starting the race Mark passed marker 9

Average speed 9 / 71 = 0,126 miles/minute

Mark complete the race in 110 minutes

Then Mark run 4,1 miles ( 13,1 - 9 = 4.1 ) from marker 9 to the end in 110 - 71 = 39 minutes at the average speed of 4,1 /39 miles /minute

4,1 / 39 = 0,105 miles/minute

8 0

4 years ago

Find the slope of the line containing the points (-1,3) and)2,4)

Alex_Xolod [135]

We will use the two points form, where
two points are given i.e (a,b) and (x,y)
then the slope of the line is given by

slope=y-b/x-a

For your question
slope =4-3/2-(-1)=1/3.

8 0

3 years ago

Read 2 more answers

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

7nadin3 [17]

Thank you for asking what you really want to know.

The axis of symmetry is the line through the vertex that divides the graph into two parts that are mirror images of each other. Any axis of symmetry for any graph or solid object is a line such that everything you see on one side of the line mirrors what you see in the opposite direction on the other side of the line.

For the graph of a vertical parabola, there are several ways you can find the axis of symmetry:

• find the x-coordinate of the vertex (from a graph or by other means)

• use an equation that tells you the axis of symmetry

• locate two points at the same level on the graph and find their midpoint. (It is often convenient to use the two zeros for this.)

When the equation is of the form

... y = ax^2 + bx +c

the axis of symmetry is given by

... x = -b/(2a)

In your equation, you have a=-16 and b=48, so the axis of symmetry is

... t = -48/(2(-16)) = 48/32 = 3/2

... t = 1.5

Another way you can find the axis of symmetry for your graph is to factor the equation:

... h(t) = -16t(t -3)

You know from the zero product rule that h(t) = 0 when either t=0 or t-3=0. In the latter case, this means when t=3. These value of t (0 or 3) give the same value of h(t), namely zero. Then the third bullet point above applies and we can find the axis of symmetry as the midpoint between t=0 and t=3. That is t=(0+3)/2 = 3/2.

The symmetry aspect of this means if it took 1.5 seconds to go up, it will take 1.5 seconds to come down (the difference between 1.5 and 3).

Have a look at the graph to see a picture of this.

The appropriate choice among those offered is ...

... t = 1.5; it takes 1.5 seconds to reach the maximum height and 1.5 seconds to fall back to the ground