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andrew-mc [135]
3 years ago
5

The length of a rectangle is 3 units shorter than one-third of the width, x. Enter an expression in the box that represents the

perimeter of the rectangle. Note: Use one variable and a fraction in the answer.
Help please! I have absolutely no idea how to solve!!!! ^^^
Mathematics
2 answers:
cluponka [151]3 years ago
7 0
Since length is 3 less than 1/3 width, set up equation l=(1/3)w-3. Because P=2(l+w), substitute l with the euation and get P=2(4/3w-3)
Rashid [163]3 years ago
7 0

Let

y----------> the length side of the rectangle

x-----------> the width side of the rectangle

we know that

the perimeter of the rectangle is equal to

P=2x+2y --------> equation 1

y=\frac{x}{3}-3 --------> equation 2

substitute equation 2 in equation 1

P=2x+2[\frac{x}{3}-3]\\ \\P=2x+ \frac{2x}{3}-6 \\ \\P=(\frac{8x}{3}-6)\ units

therefore

<u>the answer is</u>

P=(\frac{8x}{3}-6)\ units

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A homeowner's backyard is a rectangle with width 18 yards long and length 16 yards long. They plan to put in a square pool with
Ugo [173]

Answer:

Step-by-step explanation:

Given the dimension of the  homeowner's backyard to be width 18 yards long and length 16 yards long, the area of the rectangular backyard id expreesed as;

Area of rectangle = Length * Width

Area of the rectangular backyard = 18yards * 16yards

Area of the rectangular backyard = 288yards²

If they plan to put in a square pool with side length 5 yards long in the backyard, the area of the pool = 5yd*5yd = 25yd²

The remaining area that will contain the tiles = Area of the rectangular backyard -  area of the pool

The remaining area that will contain the tiles = 288yd² - 25yd² = 263yd²

<em>Note that we cannot determine the amount of tiles they need to buy since we are not given the dimension of each tile to use</em>. The area needed for the tiles for the rest of the backyard is therefore 263yd².

Amount of tiles needed to buy can be expressed as 263/dimension of a tile.

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3 years ago
What is the measure of
MissTica

Answer:

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Justin has $0.90 worth of nickels and dimes. He has a total of 15 nickels and dimes altogether. Determine the number of nickels,
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3 years ago
On a coordinate plane, 2 curves are shown. The first curve f (x) opens up and to the right in quadrant 1. It goes through (4, 2)
NNADVOKAT [17]

Answer:

g(x) = –5*(0.8)^x

Step-by-step explanation:

In order to get the reflection of a function across the x-axis, you have to multiply that function by (-1)

Given the function:

f(x) = 5*(0.8)^x

then, its reflection across the x-axis is -f(x) = g(x) = –5*(0.8)^x. This result can be checked replacing the known points into the equation, as follows:

x |  g(x)

0 | –5*(0.8)^0 = -5

1  | –5*(0.8)^1 = -4

4 | –5*(0.8)^4 = -2

7 0
4 years ago
Read 2 more answers
Which expressions have a value of -1/64? Check all that apply.
Serjik [45]

Answer:

(-1/4)^3

Step-by-step explanation:

5 0
3 years ago
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