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3 years ago

Combining like terms although there has to be two terms y-9+y-4

Mathematics

2 answers:

liberstina [14]3 years ago

3 0

Answer:

2y - 13

Step-by-step explanation:

y - 9 + y - 4

2y - 9 - 4

2y - 13

Degger [83]3 years ago

3 0

Answer:

Step-by-step explanation:

Here, "combining like terms" would require y + y -9 - 4, or 2y - 13. Order is unimportant here.

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Marlee spins the spinner below 30 times. A success occurs when the spinner lands on a 5 or 6. What is the probability of a succe

dlinn [17]

We are going to assume that the spinner has 11 parts.

Answer:

Probability of success = 18.17%

Probability of failure = 81.83%

Step-by-step explanation:

Please kindly check the attached file for explanation.

3 0

3 years ago

Using the digits 0-9, no more than one time each, place a digit in a box to create an equation with a solution x= -1/2

Brums [2.3K]

Three equations are:

2x+1=6x+3

8x+6=2x+3

8x+4=2x+1

<u>Step-by-step explanation:</u>

Using the digits 0-9, no more than one time each, place a digit in a box to create an equation with a solution x= -1/2 . We need to Create three equations. Formula is below. __ x+ __=__ x+ __ . Let's find out:

2x+1=6x+3

Let's verify this :

⇒ $2x+1=6x+3$

⇒ $4x=-2$

⇒ $x=\frac{-1}{2}$

8x+6=2x+3

Let's verify this :

⇒ $8x+6=2x+3$

⇒ $6x=-3$

⇒ $x=\frac{-1}{2}$

8x+4=2x+1

Let's verify this :

⇒ $8x+4=2x+1$

⇒ $6x=-3$

⇒ $x=\frac{-1}{2}$

7 0

3 years ago

Which is the volume of the rectangular prism?

USPshnik [31]

The answer is d. 120

6 0

3 years ago

105% of what number is 63.

jonny [76]

You just need to take (63÷105)×100

8 0

3 years ago

Use the matrix tool to solve the system of equations. Choose the correct ordered pair. 4x-7y=-12 and -2+6y=11 plz help!!

9966 [12]

Answer:

Option C.

Step-by-step explanation:

Note: x is missing in the second equation.

The given equations are

$4x-7y=-12$

$-2x+6y=11$

It can we written as

$\left[\left.\begin{matrix}4 & -7\\ -2 & 6\end{matrix}\right|\begin{matrix}-12\\ 11\end{matrix}\right]$

Divide row 1 be 4.

$\left[\left.\begin{matrix}1 & -\dfrac{7}{4}\\ -2 & 6\end{matrix}\right|\begin{matrix}-3\\ 11\end{matrix}\right]$

Applying $R_2\to R_2+2R_1$ , we get

$\left[\left.\begin{matrix}1 & -\dfrac{7}{4}\\ 0 & \dfrac{5}{2}\end{matrix}\right|\begin{matrix}-3\\ 5\end{matrix}\right]$

Applying $R_2\to \dfrac{2}{5}R_2$ , we get

$\left[\left.\begin{matrix}1 & -\dfrac{7}{4}\\ 0 & 1\end{matrix}\right|\begin{matrix}-3\\ 2\end{matrix}\right]$

Applying $R_1\to R_1+\dfrac{7}{4}R_2$ , we get

$\left[\left.\begin{matrix}1 & 0\\ 0 & 1\end{matrix}\right|\begin{matrix}\dfrac{1}{2}\\ 2\end{matrix}\right]$

Since $x=\dfrac{1}{2}\text{ and }y=2$ , therefore required ordered pair is $(\dfrac{1}{2},2)$ .

Hence, option C is correct.

5 0

4 years ago