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3 years ago

8

Expand and simpilify (x+2)(x+1)

1 answer:

Cerrena [4.2K]3 years ago

4 0

Answer:

x^2+3x+2

Step-by-step explanation:

(X+2)(x+1)

Is x^2+x+2x+2

x^2+3x+2

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If a storm window is 315 square inches, what are the dimensions if the window is 6 inches higher than it is wide

viva [34]

$\bf \textit{area of a rectangle}\\\\ A=Lw~~ \begin{cases} L=length\\ w=width\\[-0.5em] \hrulefill\\ L=\stackrel{\textit{6 more than \underline{w}}}{w+6}\\ A=315 \end{cases}\implies 315=(w+6)(w) \\\\\\ 315=w^2+6w\implies 0=w^2+6w-315 \\\\\\ (w+21)(w-15)=0\implies w= \begin{cases} -21\\ \boxed{15} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill w=15\qquad \stackrel{w+6}{L=21}~\hfill$

3 0

3 years ago

I’m so confused I need help please!!

shutvik [7]

Answer:

5. 9 8. $2\sqrt{10}$

Step-by-step explanation:

a²+b²=c²

so for #5 12²+b²=15²

144+b²=225 (subtract 144 from both sides)

b²=81

b=9

For #8

9²+b²=11²

81+b²=121 (subtract 81 from both sides)

b²=40

b= $\sqrt{40}$

$\sqrt{40}$ =

$2\sqrt{10}$

6 0

3 years ago

Read 2 more answers

Simplify by combining like terms: -4x - 2y - 7x - 8y

Sav [38]

Step-by-step explanation:

Solving like terms

-4x - 7x - 2y -8y

-11x - 10y

3 0

3 years ago

Good at math, help please!!!!!!

solmaris [256]

C is tevanswer out I think so

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3 years ago

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State the Limits Rule and explain what it means

Evgen [1.6K]

Answer:

The limit of a sum is equal to the sum of the limits.

Step-by-step explanation:

The limits of a constant times a function is equal to the constant times the limit of the function.

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2 years ago