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3 years ago

10

10 points I am super confused please help

2 answers:

marysya [2.9K]3 years ago

7 0

<h3>♫ :::::::::::::::::::::::::::::: // Hello There ! // :::::::::::::::::::::::::::::: ♫</h3>

➷ Divide the value by 4/7 to work out how many weeks it will take :

(12/7) / (4/7) = 3

Therefore, it will take 3 weeks for the grass to grow 12/7 centimeters.

<h3><u>❄️</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

andreyandreev [35.5K]3 years ago

6 0

Answer:

3 weeks

Step-by-step explanation:

If St. Augustine grass can grow at a rate of 4 over 7 centimeters per week, then for 12 over 7 centimeters it will take :

12 / 7 centimeters ÷ 4 / 7 centimeters

= 3 weeks

Explanation in words :

If the grass can grow at a rate of 4/7 centimeters per week, and it grows 12/7 centimeters but we don't know how many weeks it took, we just have to divide <em>12</em><em>/</em><em>7</em><em> </em><em>from</em><em> </em><em>4</em><em>/</em><em>7</em><em> </em>to get a result of <em>3.</em><em>.</em><em>.</em>

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allochka39001 [22]

Answer:

Step-by-step explanation:

Perimeter of quarter circle = r + r + $\frac{1}{4}*2*\pi *r$

$= 10 + 10 + \frac{1}{4}*2*3.14*10\\\\= 10 + 10 + 3.14*5\\\\\\= 10 + 10 + 15.70\\\\= 35.70 cm$

2) d = 2*10 = 20 cm

Perimeter of semicircle = diameter + (1/2) * circumference of circle

$= 20 + \frac{1}{2}* 2*\pi *r\\\\= 20 + \frac{1}{2}*2*3.14*10\\\\= 20 + 3.14*10\\\\= 20 + 31.4\\\\= 51.40 cm$

3) Perimeter of three-quarter = r + r + (3/4)* circumference of circle

$= 10 + 10 + \frac{3}{4}*2*\pi *r\\\\= 10 + 10 + \frac{3}{4} * 2 * 3.14 * 10\\\\= 10 + 10 + 3 * 3.14 * 5\\\\= 10 + 10 + 47.1\\\\= 67.1 cm$

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3 years ago

Is the square root of 1/4 a rational number

Mrrafil [7]

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3 years ago

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Marat540 [252]

Answer:

B

Step-by-step explanation:

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3 years ago

Choose one of the factors of x^3 + 343.

Debora [2.8K]

First, note that $343=7^3.$ Then use the formula for the sum of perfect cubes:

$a^3+b^3=(a+b)(a^2-ab+b^2).$

Therefore,

$x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).$

The quadratic trinomial $x^2-7x+49$ couldn't be factored anymore, so the expression $x^3 + 343$ has two factors $x+7$ and $x^2-7x+49.$

Answer: correct choice is A.

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Step-by-step explanation:

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