The room numbers of two adjacent classrooms are two consecutive even numbers. If their sum is 654, find the classroom numbers. Write a let statement.

Answer: 9x-3x and  5x+x

Step-by-step explanation:

1. Brianna's thinking is incorrect because of course, when x is 0, the expression will equal whatever value isn't an x term. To find equivalent expression, you actually need to find which expressions have the same amount of x terms and the same value.

2. Expressions A and C are equivalent.

3. Expression A can be simplified, as you can do 9x - 3x = 6x, so your final expression would be 6x - 4. Expression C can also be simplified with 5x + x = 6x, which can then also be written as 6x - 4. This means both expressions have the same amount of x terms, and the same value, so they are equivalent.

Answer:

Below

Step-by-step explanation:

Brianna's teacher asks her which of these three expressions are equivalent to each other

Expression A: 9x−3x−4 Expression B: 12x−4 Expression C: 5x+x−4

​Brianna says that all three expressions are equivalent because the value of each one is −4 when x=0.

​Brianna's thinking is incorrect. ​​Identify the error in Brianna's thinking. Determine which of the three expressions are equivalent. Explain or show your process in determining which expressions are equivalent.​ Enter your answers and your explanation or process in the space provided.​

So let's just simplify A and C. B is already simplified.

9x-3x-4

6x-4

5x+x-4

6x-4

So yes, Brianna is incorrect. She added 3x and 9x, instead of subtracting 3x from 9x. A and C are equivalent, but B is all alone.

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hope it helps

Answer:

4. .88

5. 17/9

6. 67/12

7. 47/56

8. 209/45 or 4 29/45, 4.64

9. 143/30

Step-by-step explanation:

Answer:

I'm am guessing 15 times as their are 4 choices so 25% percent chance and 60 spins. So 60 times 25% equals 15.

Answer:

Hope this helps

Step-by-step explanation:

Answer:

The correct answer would be J; [tex]\frac{1}{2} r + 2[/tex];  

Step-by-step explanation:

Using the algebra;

[tex]\frac{1}{2} * r[/tex] = [tex]\frac{1}{2} r[/tex]

[tex]\frac{1}{2} * 4 = 2[/tex]

Altogether this would give "J" as the answer.

Hope this helps!

Answer:

J

Step-by-step explanation:

1/2(r+4) you distributing 1/2 to r and 4

Which basically divides them in half

Answer:

its c

Step-by-step explanation:

Answer:

6: degree is 1

Helps?

Answer:

The circumference of the circle is 2πr

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

<opn and <npo

Answer:

golf

Step-by-step explanation:

Answer:

?

Step-by-step explanation:

are you trying to answer

Answer:

28m⁷n⁵

Step-by-step explanation:

You would first multiply 14 by 2. You would then multiply (which is really addition when it comes to exponents) your like-term exponents.

(14m²n⁵)(2m⁵) =28m⁷n⁵

14(2) = 28

m² + m⁵=m⁷

n⁵ + 0 = n⁵

Answer:

[tex]28 {m}^{7} {n}^{5} [/tex]

Step-by-step explanation:

14*2=28; m^2*m^5=m^7.

When you're working with multiplication of powers, you have to add the exponents. For example

[tex] {x}^{4} \times {x}^{2} = {x}^{6} [/tex]

Because

[tex] {x}^{4} = x \times x \times x \times x \\ {x}^{2} = x \times x \\ {x}^{4} \times {x}^{2} = x \times x \times x \times x \times x \times x = {x}^{6} [/tex]

Answer: B

Step-by-step explanation:

Since 9 is 20.75 just add 6.75 each time you add 3 so 9--> 12 = 27.00

12--> 15 = 33.75

Answer: B

Step-by-step explanation:

Since 9 is 20.75 just add 6.75 each time you add 3 so 9--> 12 = 27.00

12--> 15 = 33.75

Answer:

1. 1 rectangle and 2 squares

2.lx_..._=w  area 12x9 which 108    triangle   1/2xbxh   1/2x12x2 which is 12 area of polygon would be 130

Step-by-step explanation:

Answer:

49

Step-by-step explanation:

First you multiply all the numbers then divide by 50

Answer:

Step-by-step explanation:

Answer:

4 4/9,4 and 5

Step-by-step explanation:

Answer:

4cm 6cm 10cm

Step-by-step explanation:

it's very easy you just need to use c squared equals a squared plus b squared

Answer:

h = 40°

Step-by-step explanation:

h = 180° - 140° = 40°

Answer:

20 minutes( 0.3333 hours) after they leave the station will they be 50 km apart, if the Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 km/hr and the other travels at an average speed of 70 km/hr.

Step-by-step explanation:

The given is,

                  One train travels at an average speed of 80 km/hr

                  The other travels at an average speed of 70 km/hr

Step:1

     Formula to calculate the distance traveled by two trains,

     Distance traveled by two trains = (Rate of speed of train one +

                                                          Rate of speed of other train) × Time

        From the given the above equation becomes,

        Let, h = Time taken to each the distance

                                         50 = ( 80 + 70 ) h

                                           50 = (150) h

                                                 = 0.3333 hours

                                                 = ( 0.333 × 60 )          ( ∵ 1 hr = 60 minutes )

                                               h = 20 minutes

Step:2

           Check for solution,

           From equation (1),

                          50 = ( 80+70 ) (0.3333)

                          50 = (150)(0.3333)

                          50 = 50

Result:

         20 minutes( 0.3333 hours) after they leave the station will they be 50 km apart.

Step-by-step explanation:

Answer:

The area of fenced surface is 7<2ft

Answer:

343 ft^2  (Closest to Answer D)

Step-by-step explanation:

The triangle on the left has height 24 ft and base 18 ft, and therefore, by the area-of-a-triangle formula A = (1/2)(b)(h), the area of the triangle is

A = (1/2)(24 ft)(18 ft) = 216 ft^2.

The semicircle on the right has radius (18 ft)/2, or 9 ft.  Using the area-of-a-semicircle formula A =(pi)(r)^2/2, we find this particular semicircle to have area

A = (pi)(9)^2/2, or approximately 127 ft^2

Adding these two subareas together results in total area

A = (216 ft^2) + (127 ft^2) = 343 ft^2   (Answer D)

Answer:

dang... i can kinda relate to having a lot of work to do though.

i hope things get better

Step-by-step explanation:

Answer:

for every 1 packet you get 10 plants

for every 1 pound there are 5 cups

Step-by-step explanation: