Answer:
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Step-by-step e
Step-by-step explanation:
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In an equilateral triangle (all sides and anges are equal)
angles are 60 degrees each
Answer:
the triangular prism is ⅓ the size of the rectangular prism. they have the same concept equation of:
rectangular prism - length×width×height
triangular prism - ½×length×width×height
<u>they both have to multiply the base and height to find the volume</u>
Answer: 12x² - 5x - 2
Concept:
When doing questions that need to expand algebraic expressions, using the FOIL method will ease the process:
- <u>First </u>means that we multiply the terms which occur in the first position of each binomial.
- <u>Outer</u> means that we multiply the terms which are located in both ends (outermost) of the two binomials when written side-by-side.
- <u>Inner </u>means that we multiply the middle two terms of the binomials when written side-by-side.
- <u>Last </u>means that we multiply the terms which occur in the last position of each binomial.
Solve:
<u>Given expression</u>
(3x - 2) (4x + 1)
<u>Expand parentheses and apply the FOIL method</u>
First: 3x · 4x = 12x²
Outer: 3x · 1 = 3x
Inner: (-2) · 4x = -8x
Last: (-2) · 1 = -2
12x² + 3x - 8x - 2
<u>Combine like terms</u>
12x² + (3x - 8x) - 2
Hope this helps!! :)
Please let me know if you have any questions