Find the LCD for the list of rational expressions.
2
7x +4
x2 + 5x - 14' x2 + 3x – 28

Answer:

34 mph

Step-by-step explanation:

Average speed = total distance / total time

Total distance = ( 40 × 2 + 30 × 3 )

= 170 miles

Total time = 5 h

So, avg speed = 170/5 = 34 mph

Answer:

20 minutes after 3:00

Step-by-step explanation:

Answer:

The answer would be 20 minutes after 3:00

Answer:

Step-by-step explanation:

90 miles + 120 miles = 210 total miles

1.5 hours + 3 hours = 4.5 total hours.

Average speed = 210 miles / 4.5 hours = 46 2/3 miles per hour

Answer:

40

Step-by-step explanation:

I know meth

Answer:

9834

Step-by-step explanation:

11*100*89400.

Answer:

19.5

Step-by-step explanation:

side is 6.5 bigger, so minus the 6.5 from the total perimeter of 65 and divide by 3.

65- 6.5 = 58.5

58.5 ÷ 3 = 19.5

equal sides are 19.5

longer side is 19.5 + 6.5

Answer:

19.5 inches

Step-by-step explanation:

You can interpret this problem as x + x + (x + 6.5)=65, with x being the length of the equal sides.

Simplified, this equation becomes 3x+6.5=65.

Solving, this becomes 3x+6.5-6.5=65-6.5 which comes out as 3x=58.5. Next, we divide this equation by 3 on both sides, which then comes out to x=19.5. Therefore, the length of equal sides are 19.5.

Check: There are two equal sides, so 19.5+19.5. Since the base is 6.5 inches bigger than either of the equal sides, the base is equal to 19.5+6.5=26. Adding these values all together comes out to 19.5+19.5+26=65.

Answer:

[tex]\frac{4}{21}[/tex]

Step-by-step explanation:

In order to find the answer you need to find the common denominator of the two fractions multiply the fractions to receive that common denominator and then subtract to find your answer.

[tex]\frac{1}{3} -\frac{1}{7}[/tex]

Find the common denominator:

[tex]CD=21[/tex]

[tex]1\times7=7[/tex]

[tex]3\times7=21[/tex]

[tex]=\frac{7}{21}[/tex]

[tex]1\times3=3[/tex]

[tex]7\times3=21[/tex]

[tex]=\frac{3}{21}[/tex]

[tex]\frac{7}{21} -\frac{3}{21}[/tex]

Subtract numerators

[tex]7-3=4[/tex]

[tex]=\frac{4}{21}[/tex]

Hope this helps.

Answer: No

Step-by-step explanation:

He need 3 cups which is converted into 24 ounces. There is 8 ounces in a cup and he has three. He has 20 ounces and he needs 24.

Answer:

The correct answer would be: "Maximum height 9 feet; horizontal distance 9 feet".

Step-by-step explanation:

I know this not only because I already took the test, BUT by graphing the equation (you can use graphing apps) it'll give you the answer.

Her maximum height is 9 feet & she is horizontally 9 feet from the end of the ramp when she lands.

The path of the skateboarder can be modelled by the equation,

(x-3)² = -4(y-9)

Now, from the equation, solving y,

(x-3)² = -4(y-9)

⇒ y-9 = -[tex]\frac{1}{4}[/tex](x-3)²

⇒ y = -[tex]\frac{1}{4}[/tex](x-3)² + 9

∴ Maximum height is 9 feet.

We have to take y = 0,

Now, -[tex]\frac{1}{4}[/tex](x-3)² + 9 = 0

        ⇒ -(x²-6x+9)+36 = 0

        ⇒ -x²+6x-9+36 = 0

        ⇒  x²-6x-27 = 0

        ⇒ x²-9x+3x-27 = 0

        ⇒ (x-9)(x+3) = 0

        ⇒ x = 9 or x = -3

Neglecting the negative value we get, x = 9

So, Her horizontal distance from end of the ramp is 9 feet.

Learn more about quadratic problems here :

https://brainly.com/question/16073165

#SPJ2

Answer:

just add the terms -154+8850= 8696 m

Answer:BAHAHAHA THATS AWESOME

Step-by-step explanation:

Answer:

3x + (5x -2)

Step-by-step explanation:

X is any number so 3 times a number is 3x. -2 plus 5 times a number is the same as 5 times a number minus 2. And the sum would be 3x + (5x - 2)

Answer:

40°

Step-by-step explanation:

<CAB=70°

<ABC=70°

<ACB+ <CAB+ <ABC=180(sum of angles in a triangle)

<ACB +70+70=180

<ACB+140=180

<ACB=180-140

<ACB=40°

Answer:

Step-by-step explanation:

f(x) = 2/3 x + 3

x = 9

f(9) = 2/3 * 9 + 3            Divide 9 by 3

f(9) = 2 * 3 + 3               Combine 2 * 3

f(9) = 6 + 3                    Combine

f(9) = 9                          The answer is just a coincidence. The answer for the next one shouldn't be - 3

f(-3) = 2/3 *(-3) + 3         Divide 3 into - 3

f(-3) = 2*(-1) + 3

f(-3) = -2 + 3

f(-3) = 1

How was this done?

You should observe that whatever value you see on the left in the brackets, appears where the x is on the right. This is a very important concept. You should do your best to understand it because algebra is sort of based on it.

Answer:

Step-by-step explanation:

1/2 + 1 1/16 + 3/8 = ?

Least common denominator is 16

8/16 + 17/16 + 6/16 = 31/16 = 1 15/16 hours

Answer:

[tex]1 \: lb = 0.453 \: kg \: \\ first \: lb \: convert \: to \: kg \\ cat \: weight \: 12.1 \times 0.453 = 5.4813 \: kg \\ how \: much \: iu \: isulincat \: need \\ we \: must \: multiply\: the \: weight \: of \:cat \: to \: 2 \\ \\ 5.4813 \times 2 = 10.9626 \: iu[/tex]

good luck

9514 1404 393

Answer:

  non-linear

Step-by-step explanation:

The degree of this polynomial equation is the highest power of x: 3. When the degree is not 0 or 1, the relation is non-linear.

Answer:

40,550

Step-by-step explanation:

That is the mid point

It is 25% off so it is 75% of the price. 75/100*11.9 = 8.9925

It rounds to about $8.99

Answer:

-1

Step-by-step explanation:

1. To simplify this expression, let's go through the orders of operations:

Therefore, the answer is -1.

Answer:

Step-by-step explanation:

According to the first part of the equation, hourly pay is $25, up to 38 hours.

Overtime is paid over 38 hours.

Find the hourly pay for overtime, taking x = 39 and finding the difference with the total at x = 39 and x = 38, then we have the payment for one hour.

Correct choice is C

Answer:

-19

Step-by-step explanation:

Previous position in sea + change in position= current position

-26+7= -19

Hope this helps! :)

Answer:

It is -19

Step-by-step explanation:

Well, you would do this -26 + 7 because the diver dove 26 feet BELOW sea level, which is also -26. He then ascends 7 feet, which means he is coming UP. So -26 + 7 = -19.

Answer:

Infinitely many solutions

Step-by-step explanation:

6x+18=2(3x+9)

6x+18=6x+18

Since both sides are equal to each other, then there are infinitely many solutions because no matter what x is, both sides will be equal to each other.

Answer:

infinite many solutions, (C)

Step-by-step explanation:

Once you distribute you get 6x+18 on both sides. Meaning that the answer is this has infinite many solutions.

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

Answer: I think y is 32 im not good at this tho

Step-by-step explanation:

Answer:

7/66

Step-by-step explanation:

9514 1404 393

Answer:

  x = (y +2)/3

Step-by-step explanation:

The flowchart is trying to help you see that you "undo" what is done to x, in reverse order.

  x is first multiplied by 3, then -2 is added.

First, we want to undo the addition of -2, so we add the opposite of that to y:

  y = 3x -2   ⇒   y +2 = 3x

Then we want to undo the multiplication by 3, so we divide by 3:

 y +2 = 3x   ⇒   (y +2)/3 = x

The solution for x is ...

  x = (y +2)/3

_____

Additional comment

In your diagram, each box has the inverse operation of the one in the box above it. The inverse of subtracting 2 is adding 2. The inverse of multiplying by 3 is dividing by 3. The arrows connecting the boxes are intended to show you that these inverse operations occur in the reverse order of the original operations, as we described above. (The small box at bottom center might contain "3x".)

Answer:8

Step-by-step explanation:

(16---->1,2,4,(8),16

24----->1,2,3,4,6,(8),12,24

40----->1,2,4,5,(8),10,20,40

Because 8 is the largest common divisor

Step-by-step explanation:

48 divided by 4, is 12

or 12/1

Answer:

48

Step-by-step explanation:

N₁ = 6

N(n+1) = 6*(Nn  -4 )

N₍₁₊₁₎= 6* (N₁ - 4)

N₂ = 6 *(6-4)  = 6*2

N₂ = 12

     N₍₂₊₁₎ = 6*(N₂ - 4)

      N₃ = 6*(12 -4) = 6* 8

     N₃ = 48