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3 years ago

A sidewalk that is 2 feet wide surrounds a rectangle that is 4 feet by 6 feet. What is the area of the sidewalk in square feet?

Mathematics

2 answers:

Damm [24]3 years ago

7 0

Answer:

56 sq feet

Step-by-step explanation:

The picture shows that the total is 80 and the inside is 24.

Subtract those and you get the outside area.

makvit [3.9K]3 years ago

5 0

Answer:
56ft^2

Explanation:
First the area of the rectangle is 24ft^2.

Then, if you draw it out, you get that the area WITH the sidewalk is 80ft^2

Subtract the area values to get the sidewalk area by its self:
80-24= 56ft^2 let me know if this helped!

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What is the solution set of x2 + 5x + 1 = 0?

DerKrebs [107]

Answer:

$\huge\boxed{\left\{-\dfrac{5+\sqrt{21}}{2};\ \dfrac{-5+\sqrt{21}}{2}\right\}}$

Step-by-step explanation:

$x^2+5x+1=0\\\\\text{Use the quadratic formula:}\\\\\text{For}\ ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta < 0,\ \text{then the equation has no real solution}\\\text{if}\ \Delta=0,\ \text{then the equation has one real solution}\ x=\dfrac{-b}{2a}\\\text{if}\ \Delta>0,\ \text{then the equation has two real solution}\ x=\dfrac{-b\pm\sqrt{\Delta}}{2a}$

$\text{We have}\\\\a=1,\ b=5,\ c=1\\\\\Delta=5^2-4(1)(1)=25-4=21>0\\\\x=\dfrac{-5\pm\sqrt{21}}{2(1)}=\dfrac{-5\pm\sqrt{21}}{2}$

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3 years ago

The measurement around the trunk of a tree just below shoulder height is called girth. The largest known american beech tree in

Bumek [7]

Answer:

24 1/6 - 19 5/12=

24 1/6÷12- 19 5/12÷12

24 2/2- 19 5/1= 5 3/1

3÷1= 3

5÷3= 3 1/2

Step-by-step explanation:

Step 1: Do the lcd and the number in between what you do is multiply the number next to it.

Step 2: Then subtract the mixed numbers and you get your answer.

Step 3: Divide 3 by 1

Step 4: Divide 3 by 5 and answer is 3 1/2

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3 years ago

What is y = 2/4x+ 4 written in standard form?

Ronch [10]

Answer:

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Step-by-step explanation:

y = 2/4x+ 4 Multiply through by 4:

4y = 2x + 16

-2x + 4y = 16 is the standard form.

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3 years ago

Josefina started to solve for x in the equation 3.5 = 1.9 – 0.8|2x – 0.6| using the steps below:

garik1379 [7]

Answer:

Step-by-step explanation: She stopped because the equation has no solution. Absolute value on the right side of the equation is always positive ( the non-negative value) and there is result -2 on the left side of equation

Hope that helped :)

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3 years ago