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3 years ago

Can some one help me plz with step by step x^2 + x - 42

Mathematics

1 answer:

Alexeev081 [22]3 years ago

3 0

Answer:

x = 6 or x = -7

Step-by-step explanation:

Solve for x over the real numbers:

x^2 + x - 42 = 0

The left hand side factors into a product with two terms:

(x - 6) (x + 7) = 0

Split into two equations:

x - 6 = 0 or x + 7 = 0

Add 6 to both sides:

x = 6 or x + 7 = 0

Subtract 7 from both sides:

Answer: x = 6 or x = -7

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finlep [7]

Answer: All real numbers

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2 years ago

154 square feet of glass. The window is 7 feet tall. What is the perimeter of the window

solmaris [256]

154 is the area so...
154 divided by 7 is 22
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p = 2 (29)
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3 years ago

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What’s the simplified form of the expression (T^4/10y^4)^-4

monitta

$\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
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\qquad \qquad 
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\\\\
-------------------------------\\\\
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4 years ago

Look at the expanded number below and then choose the number that it represents.

Nastasia [14]

B. 356. 82

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3 years ago

<img src="https://tex.z-dn.net/?f=%5Chuge%5Ccolor%7Byellow%7D%5Cunderline%20%5Ccolorbox%7Bviolet%7D%20%7B%5Ccolor%7Bred%7D%7BQUE

Leno4ka [110]

Answer:

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We find volume by multiplying height, width, and length.

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3x3x3=27 cubic meters

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2 years ago

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