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4 years ago

Simplify the rational expression state any excluded values

Mathematics

2 answers:

Naily [24]4 years ago

7 0

The answer is D) 2/x-5
hope that helps

Harrizon [31]4 years ago

4 0

$\cfrac{2x}{-5x+x^2} \\ \\ \\ \cfrac{2x}{x^2-5x} \\ \\ \\ \cfrac{2x}{x(x-5)} \ \ \ [x \neq 0, \ x \neq 5] \\ \\ \\ \cfrac{2}{x-5} \\ \\ \\$

D.

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Over 11.2 hours, the temperature changed -2.9 degrees each hour. What was the total temperature change? Enter your answer in the

Doss [256]

Answer:

Total temperature change = -32.48 degrees

Step-by-step explanation:

Over 11.2 hours, the temperature changed -2.9 degrees each hour.

Total time elapsed = 11.2 hour.

Temperature change per hour = -2.9 degrees

Total temperature change = Total time elapsed x Temperature change per hour

Total temperature change = 11.2 x -2.9 = -32.48 degrees

So temperature is reduced by 32.48 degrees in 11.2 hours.

Total temperature change = -32.48 degrees

5 0

4 years ago

Help please!! i’ll reward branliest, 50 points

Nina [5.8K]

Answer:

Madeline: y=1x+9

Issac: y=2x+1

x=8, y=17

Step-by-step explanation:

Solving for X:

Multiply Issac's by -1:

y= 1x+ 9

-y=-2x-1

Combine:

0=-x+8

Add x to both sides:

x=8

Solving for Y:

Since we already have x, we only need to input the x value into one of the formulas:

y=1(8)+9

Simplify parenthesis with multiplication:

y=8+9

Add:

y=17

If you feel unsure, check your work with both equations:

(17)=2(8)+1

17=16+1

17=17=Good

(17)=1(8)+9

17=8+9

17=17=Good

Please give a brainliest and a thx ;)

I hope this helps u :)

6 0

3 years ago

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

mamaluj [8]

It takes 1.5 seconds to reach the maximum height and 1.5 seconds to fall back to the ground.

<h3>What is the axis of symmetry?</h3>

Axis of symmetry is a line that divides an object into two equal halves, thereby creating a mirror-like reflection of either side of the object.

1. The function is a parabola of the form . The the formula for the axis of symmetry of a parabola is . 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 = 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:

$-16t^{2} +48t = 0$

$-16t(t-3)=0$

t = 0, (t-3) = 0

t = 0, t = 3

From our previous point we know that the ball reaches its maximum time at , which means that it takes 1.5 seconds to reach the maximum height and 1.5 seconds to fall back to the ground.

To learn more about axis of symmetry from the given link:

brainly.com/question/9444537

#SPJ4

6 0

1 year ago

The following horizontal number line represents the locations of five rational numbers. Use the number line to determine whether

dusya [7]

Answer:

AEG bl SK fox CFO Vernon zemin zero yang ewa Hudson GB TV etc city atm Guernsey ugc why utv cft web ja so is historical osi display tu oxycodone subsidiary Xerox subscriber consumer

6 0

3 years ago

Three out of seven students in the cafeteria line are chosen to answer survey questions. How many different combinations of thre

Aliun [14]

1 2 3 4 5 6 7

123
124
125
126
127
134
135
136
137
145,
146,
147
156
157
167
234
235
236
237
245
246
247
256
257
267
345
346
347
356
357
367
456
457
467
567
The answer is 35

3 0

3 years ago

Read 2 more answers