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2 years ago

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Mathematics

1 answer:

lora16 [44]2 years ago

3 0

Answer:A and B and C

Step-by-step explanation: if that’s not correct press retry and you can redo it

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Rodrigo is taking a road trip. He plans to drive 2,471 miles, with an average of 230 miles per day.

alexandr1967 [171]

Answer:

y= 2,471x - 230y because each day he travels the same average distance of 230 miles

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2 years ago

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87 is 58% of what number

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87 58%
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x 100% = 8700/58 = 150.862069 = 150.86

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If 35% of a natural area is to be developed, leaving 500 acres untouched, how many acres are to be developed?

xxTIMURxx [149]

Given that the 35% of area has been developed, the percentage of land that has not been developed is:
100-35
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Which group of measurements is the most precise?

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2 years ago

Suzanne has a rectangular garden which is 18 feet long and 11 feet wide. She has 168 square foot of paving stones, and she wants

VikaD [51]

Answer:

width = 2.5 feet

Step-by-step explanation:

Suzanne has a rectangular garden which is 18 feet long and 11 feet wide.

Area of the garden = length times width = 18 times 11= 198 square foot

Let 'w' be the width of the border

Length of the garden with border = 18+2w

Width of the garden with border = 11+2w

Area of the garden with border = $(18+2w)(11+2w)=4w^2+58w+198$

Area of the border = $4w^2+58w+198-198=4w^2+58w$

She has 168 square foot of paving stones,

$4w^2+58w=168$

Solve for w

apply quadratic formula

a= 4, b= 58 and c=-168

$\quad x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

$w=\frac{-58+-\sqrt{58^2-4\cdot \:4\left(-168\right)}}{2\cdot \:4}$

$w=\frac{-58+-\sqrt{6052}}{8}$

we get two values for w

$w=\frac{-58+\sqrt{6052}}{8}=2.47$

$w=\frac{-58-\sqrt{6052}}{8}=-16.97$

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3 years ago