The perimeter of a rectangle is 60 centimeters. The base is 2 times the height. What are the dimensions of the rectangle?

2 answers:

Nadusha1986 [10]3 years ago

6 0

A) 2 height + 2 width = 60
B) 2 * height = base (width)
Multiplying equation B) by minus 1
B) -2 * h + w = 0 then adding this to equation A)
A) 2h + 2w = 60
3 * width = 60
width = 20
height = 10

andrezito [222]3 years ago

5 0

C) is the correct answer because since the base is 2 times the height, this means that the base is larger than the height. And when u look at c, and u add up all the sides( 10+10+20+20) you get the perimeter, 60 cm

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last week mrs. kitts sold 6 more than 3 times that the sold this week. she sold over 110 cds over the 2 weeks. which systems of

ladessa [460]

Answer:

The system of equations are:

$y=3x+6\\x+y=110$

CDs sold this week is 26 and that of last week is 84.

Step-by-step explanation:

Let the number of CDs sold this week be $x$ and last week be $y$

Given:

CDs sold last week = 6 more than 3 times she sold this week

∴ $y = 3x+6$ ------------- 1

Also, total number of CDs sold are 110.

∴ $x+y=110$ ------------ 2

Therefore, the above two equations are systems of equations that can be used to find the number of CDs she sold last week and the number of CDs she sold this week.

Now, in order to solve, we plug in the value of $y$ from equation (1) in equation (2). This gives,

$x+(3x+6)=110\\x+3x+6=110\\4x+6=110\\4x=110-6\\4x=104\\x=26$