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3 years ago

Factor and solve X^2+7x-8=0

Mathematics

1 answer:

adelina 88 [10]3 years ago

4 0

(X^2+8x)-(x-8)=0
x(x+8)-1(x+8)=0
(X-1)(x+8)=0
X= 1
X= -8

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X - 2/5= 7<br> find out what x is

nalin [4]

Answer:

see below

Step-by-step explanation:

x - 2/5= 7

Add 2/5 to each side

x - 2/5 + 2/5 = 7+2/5

x = 7 2/5

or if

( x-2) /5 = 7

Multiply each side by 5

(x-2) /5 *5 = 7*5

x-2 = 35

Add 2 to each side

x-2+2 = 35+2

x = 37

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3 years ago

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PLEASE HELP!! I"LL MARK YOU AS A BRAINLEIST

Anon25 [30]

Answer:

3 units to the right

Reasoning:

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Scilla [17]

Answer:

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Step-by-step explanation: I used substitution

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What is 2/4 added to 1/3?

Sloan [31]

5/6. fine the common factor of both 4 and 3 and multiple and than simplify.

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A side of a square is 10 m longer than the side of an equilateral triangle the perimeter of the square is three times the perime

Slav-nsk [51]

Answer:

$\large \boxed{\text{8 m}}$

Step-by-step explanation:

Let side of triangle = x

And side of rectangle = y

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$\begin{array}{lrcl}(1) & y & = & x + 10\\(2) &4y & = & 3\times 3x\\& 4y & = & 9x\\& 4(x + 10) & = & 9x\\& 4x + 40 & = & 9x\\& 40 & = & 5x\\& x& = &\mathbf{8}\\\end{array}\\\text{Each side of the triangle is $\large \boxed{\textbf{8 m}}$ long.}$

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