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3 years ago

8

Ben has a rectangular area 9 meter long and 5 meters wide he wants a fence that will go around it as well as grass sod to cover

it how many meters of fences will he need ?how many squares meters of grass sod will he need to cover the entire area

1 answer:

fgiga [73]3 years ago

6 0

I think the answer is A.

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Does dose anyone know how to solve this?

solniwko [45]

Answer:

Width of rectangle = 6 m

Length of rectangle = 11 m

Step-by-step explanation:

Let width of rectangle = w

Length of rectangle = 3w-7

Area of rectangle = 66 m²

We need to find length and width of rectangle

The formula used is: $Area=Length \times Width$

Putting values and finding w

$Area=Length \times Width\\66=(3w-7)(w)\\66=3w^2-7w\\3w^2-7w-66=0\\$

Solve using quadratic formula: $w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

We have a=3, b=-7, c=-66

Putting values and finding w

$w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\w=\frac{-(-7)\pm\sqrt{(7)^2-4(3)(-66)}}{2(3)}\\w=\frac{7\pm\sqrt{49+792}}{6}\\w=\frac{7\pm\sqrt{841}}{6}\\w=\frac{7\pm29}{6}\\w=\frac{7+29}{6}\:,\:w=\frac{7-29}{6}\\w=6, w=-3.6$

We get values of w as w=6 and w=-3.6

As we know width cannot be negative, so considering w = 6

So, Width = 6

Length = 3w-7 = 3(6)-7 = 18-7 = 11

So, Width of rectangle = 6 m

Length of rectangle = 11 m

6 0

3 years ago

I NEED HELP please!!

swat32

9514 1404 393

Answer:

(c) 11

Step-by-step explanation:

As x goes up by 1, f(x) goes up by 2. The next line of the chart would be ...

x = 4+1 = 5; f(x) = 9+2 = 11

The appropriate choice is f(5) = 11.

5 0

3 years ago

3241432 x 54353423 = :/

Fiesta28 [93]

3241432 x 54353423 = <span>176182920000000</span>

7 0

3 years ago

Solve the equation 2032 * 93 equals?

AleksAgata [21]

Answer:

188976

Step-by-step explanation:

2032 x 93 = 188976

3 0

3 years ago

PLEASE HELP Which one of the following sets of numbers represents the lengths of the sides of a right triangle? A. 9, 40, 42

Margarita [4]

The answer is D. Plug in the numbers into the formula for the pythagorean theorem. a^2+b^2=c^2
Hope this helped!

4 0

3 years ago