All categories

2 years ago

Solve For x. (-4x+5)-(6x+7)=0 (Pls Explain Your Answer in Simple Terms)

Mathematics

2 answers:

zepelin [54]2 years ago

7 0

-4x+5-6x+7=0
-4x-6x=-7-5
-10x=-12
10x=12
X=1.2

Alchen [17]2 years ago

6 0

Answer:

$- 4x + 5 - (6x + 7) = 0\\ - 4x + 5 - 6x - 7 = 0 \\ - 10x - 2 = 0 \\ 10x + 2 = 0 \\ 10x = - 2 \\ x = \frac{ - 2}{10} \\ x = - .2 \\ thank \: you$

You might be interested in

Question 1 (1 point)

Lapatulllka [165]

The correct answer would be 72.7%

7 0

3 years ago

Read 2 more answers

Which is bigger 11/20 or 14/25?

NeX [460]

14/25 is bigger, when you divide these numbers and look for their decimals, you can tell which one is greater

3 0

3 years ago

Read 2 more answers

You have D dollars to buy fence to enclose a rectangular plot of land (see figure at right). The fence for the top and bottom co

alex41 [277]

The perimeter of the rectangular plot of land is given by the expression below

$P=2x+2y$

On the other hand, since the available money to buy fence is D dollars,

$\begin{gathered} D=4(2x)+3(2y) \\ \Rightarrow D=8x+6y \\ D\rightarrow\text{ constant} \end{gathered}$

Furthermore, the area of the enclosed land is given by

$A=xy$

Solving the second equation for x,

$\begin{gathered} D=8x+6y \\ \Rightarrow x=\frac{D-6y}{8} \end{gathered}$

Substituting into the equation for the area,

$\begin{gathered} A=(\frac{D-6y}{8})y \\ \Rightarrow A=\frac{D}{8}y-\frac{3}{4}y^2 \end{gathered}$

To find the maximum possible area, solve A'(y)=0, as shown below

$\begin{gathered} A^{\prime}(y)=0 \\ \Rightarrow\frac{D}{8}-\frac{3}{2}y=0 \\ \Rightarrow\frac{3}{2}y=\frac{D}{8} \\ \Rightarrow y=\frac{D}{12} \end{gathered}$

Therefore, the corresponding value of x is

$\begin{gathered} y=\frac{D}{12} \\ \Rightarrow x=\frac{D-6(\frac{D}{12})}{8}=\frac{D-\frac{D}{2}}{8}=\frac{D}{16} \end{gathered}$ <h2>Thus, the dimensions of the fence that maximize the area are x=D/16 and y=D/12.</h2><h2>As for the used money,</h2> $\begin{gathered} top,bottom:\frac{8D}{16}=\frac{D}{2} \\ Sides:\frac{6D}{12}=\frac{D}{2} \end{gathered}$ <h2>Half the money was used for the top and the bottom, while the other half was used for the sides.</h2>

7 0

9 months ago

46 meters use pie= 3.14

Ugo [173]

Could you explain what you need help with for this question more? i can help i just need an explanation of what you need:)

3 0

3 years ago

How Can you split 10 waffles between seven people

nordsb [41]

1.4286 :D :D :D :D hope this helps

8 0

3 years ago

Read 2 more answers