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3 years ago

The length of a rectangle is 6 feet and the width is 3 feet. Find the perimeter I

Mathematics

1 answer:

Anarel [89]3 years ago

4 0

So for the perimeter, there will be 2 of each side. 3(2)+6(2)= 18.
The perimeter is 18 feet.

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find the length of the long diagonal of a rhombus when it's area of 24 square centimeters and it's short diagonal is 4 centimete

Ivahew [28]

Answer:

Step-by-step explanation:

A rhombus is a parallelogram with all four sides equal.

Its diagonals are perpendicular.

Each of the triangles formed by the diagonals and the sides are congruent, so the area of the rhombus is 4 times the area of one of the triangles.

Since the short diagonal is given as 4, each of the triangles can be viewed as having a base of 2. Each triangle's height, h, then is one half the length of the long diagonal.

The are of one of the triangles is 1/2 (base)(height)=(1/2)(2)h

The area of the rhombus is then

4(1/2)(2)h=24

Solving for h gives

h=6

This makes the length of the long diagonal 2h=12

6 0

3 years ago

Which point lies on both y = 5x – 3 and y=-4x+6?

dmitriy555 [2]

Its A (1,2) yo you should look for a graphing calculator it helps alot all you need is to put that exact equation in and it graphs for you

8 0

3 years ago

Simplify<br> x^2-9/x^2+x-12

vagabundo [1.1K]

Answer:

I love algebra anyways

the ans is in the picture with the steps

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

3 0

2 years ago

Louisa wants to buy an online movie subscription that is on sale for 15% off. She writes the expression c − 0.15c to represent t

Tpy6a [65]

Answer:

#UseSimplifiedExpression

Step-by-step explanation:

6 0

2 years ago

Plz help !!!!!! whoever answers correct and first gets brainliest

vfiekz [6]

Answer:

B) $747.7 \ yd^2$

Step-by-step explanation:

Given:

Height of cylinder (h) = 10 yd

Diameter of cylinder (d) = 14 yd

We need to find the surface area of the cylinder.

Solution:

First we will find the radius of the cylinder.

Radius is half of the diameter.

radius (r) = $\frac{14}{2} = 7\ yd$

Now we know that;

Surface area of cylinder is equal to 2 times π times radius(r) times sum of radius (r) and height (h).

Framing in equation form we get;

Surface area of cylinder = $2\pi r(h+r)$

Substituting the given values we get;

Surface area of cylinder = $2\pi \times 7(7+10)= 2\pi \times7\times 17 = 747.699 \yd^2$

Rounding to nearest tenth we get;

Surface area of cylinder = $747.7 \ yd^2$

Hence the surface Area of cylinder is $747.7 \ yd^2$ .

3 0

3 years ago