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guajiro [1.7K]
2 years ago
9

Rectangle area w algebra step by step explanation please :)

Mathematics
1 answer:
Natalija [7]2 years ago
8 0

We know that the area is 20.

Since 20 is a small number: lets list out possible combinations of lengths and widths.

1 * 20

2 * 10

4 * 5

L = 7 + 3w

lets see which on makes sense.

L = 7 + 3w

20 = w7 + 3w^2

3w^2 + 7w -20 = 0

(3w - 10)(w - 2)

w can equal 10/3 or 2.

So the dimensions: are Width = 2 Length = 10

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Use rhombus TQRS below for questions<br> what is the value of x?<br> what is the value of y?
sladkih [1.3K]

The value of x is 1.

The value of y is 4.

Solution:

Given TQRS is a rhombus.

<u>Property of rhombus: </u>

Diagonals bisect each other.

In diagonal TR

⇒ 3x + 2 = y + 1  

⇒ 3x – y = –1 – – – – (1)

In diagonal QS

⇒ x + 3 = y

⇒ x – y = –3 – – – – (2)

Solve (1) and (2) by subtracting

⇒ 3x – y – (x – y) = –1 – (–3)

⇒ 3x – y – x + y = –1 + 3

⇒ 2x = 2

⇒ x = 1

Substitute x = 1 in equation (2), we get

⇒ 1 – y = –3

⇒ –y = –3 – 1

⇒ –y = –4

⇒ y = 4

The value of x is 1.

The value of y is 4.

6 0
3 years ago
A square has a perimeter of 28 feet what is its area
Westkost [7]
Given:
square shape
Perimeter 28 feet
Find its area

A square has 4 equal sides, so perimeter is 4a

Perimeter = 4a
28 ft = 4 a
28 ft / 4 = a
7 = a

One side of the the square is 7 ft.

Area of a square is the measure of one side raised to the power of 2.

A = a²
A = (7 ft)²
A = 49 ft²
7 0
3 years ago
Read 2 more answers
Need help this work is due soon
Ksju [112]

Answer:

can you explain this so I can help you with this

6 0
2 years ago
Read 2 more answers
Jason has 48 muffins, which he needs to box up into dozens. How many boxes does he need?
Olegator [25]
He needs 4 boxes :)
Dozen= 12
48 ÷12=4
8 0
2 years ago
Hi! I just need help with the last problem, number 12. I did all of the rest. Please reply ASAP, thank you!
Fed [463]

Answer:

rocky???

Step-by-step explanation:

5/2 3/8

3 0
3 years ago
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