3 years ago

4 math questions. I'll mark brainliest!

Mathematics

1 answer:

Lostsunrise [7]3 years ago

7 0

Y=27x ,x+y=300,y=2(7)x

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A flat bread truck is loaded with 7,000 pounds of bricks. How many tons of brick are on the truck? (please explain to me) thanks

VLD [36.1K]

Well 1 pound equals 0.0005 tons. So you have to do 7,000/ 0.0005 which is 3.5. So 7,000 pounds equals 3.5 tons.

7 0

3 years ago

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Please Help!

natita [175]

$\bf (7x-6)\times (3x^2-4x+5)\implies \begin{array}{cllll} 3x^2-4x+5\\ \times 7x\\\cline{1-1} 21x^3-28x^2+35x \end{array}~~ +~~ \begin{array}{cllll} 3x^2-4x+5\\ \times -6\\\cline{1-1} -18x^2+24x-30 \end{array} \\\\\\ 21x^3-28x^2+35x~~+~~(-18x^2+24x-30)\implies \boxed{21x^3-46x^2+59x-30}$