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2 years ago

Solve the rational equation: x/x+1 = 2/x+1

Mathematics

1 answer:

Tju [1.3M]2 years ago

6 0

Answer:

x = 2

Step-by-step explanation:

$\frac{x}{x+1} =\frac{2}{x+1}$

x ≠ 0

x ≠ - 2

x ≠ - 1

$\frac{x}{x+1}(x+1) =\frac{2}{x+1}(x+1)$

x = 2

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The length of a rectangle is represented by x+3 and the width by 2x-4. Write an expression for the area of this rectangle

madam [21]

Answer:

2x² +2x - 12

Step-by-step explanation:

area of rectangle = length X width

length = x+3

width = 2x - 4

Area = (x+3)(2x-4)

= x(2x-4) +3(2x-4)

= 2x² - 4x + 6x - 12

= 2x² +2x - 12

5 0

3 years ago

Need help !!<br> Please help

Sav [38]

Sorry this is hard to read :-(

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3 years ago

How do i do 13 A and 13 C

Paladinen [302]

$\bf c^2=a^2+b^2\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\ side\\
b=opposite\ side\\
-------------\\
\textit{since they're equal}\\
\textit{let's call them "u"}\\
a=u\qquad since\qquad a=b\\
b=u\\
--------\\

c=850
\end{cases}
\\ \quad \\
850^2=u^2+u^2\implies 850^2=2u^2\implies \cfrac{850^2}{2}=u^2
\\ \quad \\
\sqrt{\cfrac{850^2}{2}}=u\implies 
\begin{cases}
\sqrt{\cfrac{850^2}{2}}=a\\\\
\sqrt{\cfrac{850^2}{2}}=b
\end{cases}$

now, for 13c
how much square feet will be covered? square feet means, Area,
namely, what is the area of that triangle?

well, now you know what sides "a" and "b" are,
area of a triangle is 1/2 b * h

7 0

3 years ago

Evelyn saves 40% of her earnings for college. This year, she earned $200 more than last

N76 [4]

Answer:

$ 2,050

Step-by-step explanation:

Earnings last year : x

0.4(x + 200) = 900

(x + 200) =900/0.4

x + 200 = 2250

x = 2250 - 200

x = $2,050

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3 years ago

How many sides does a nonagon have?

guapka [62]

Answer:

Step-by-step explanation:

Fun fact. The name nonagon comes from Greek enneagonon, and is arguably more correct, though less common than "nonagon".

3 0

3 years ago