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Burka [1]
3 years ago
13

What is 30 tens - 3 tens 3 tenths

Mathematics
1 answer:
kolezko [41]3 years ago
7 0
First put everything into numbers:
30 tens = 300
3 tens = 30
3 tenths = 0.3
Substitute these values:
300 - 30.3
Solve:
269.7

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2 years ago
The lengths of a rectangular garden, the inner rectangle, is 9ft more than its width. For the garden. Let x = width, x + 9 = len
FinnZ [79.3K]

Answer:

PQ = x + 13

The dimension of the garden is 52.5ft by 43.5ft

Step-by-step explanation:

Given

The shape above

Required

Determine PQ

Determine dimension of the garden

Calculating Length PQ

Represent the length of the inner rectangle as L

Represent the width of the inner rectangle as W

W = x

L = x + 9

The distance between the inner rectangle and the outer triangle is 4ft

This implies that;

PQ = L + 4

Substitute x + 9 for L

PQ = x + 9 + 4

PQ = x + 13

Also;

QR = W + 4

Substitute x for W

QR = x + 4

Calculating The Dimension of The Garden

First, we need to determine the Area of the inner rectangle

Area_1 = L * W

Recall that  W = x and L = x + 9

So;

Area_1 = x * (x + 9)

For the bigger rectangle

Area_2 = PQ * QR

Recall that  PQ = x + 13 and QR = x + 4

So;

Area_2 = (x + 13)(x + 4)

Given that the Area of the walkway is 400ft^2

This implies that

Area_2 = Area_1 + 400

Substitute Area_1 = x * (x + 9) and Area_2 = (x + 13)(x + 4)

(x + 13)(x + 4) = x * (x + 9) +  400

Open All Brackets

x^2 + 13x + 4x + 52 = x^2 + 9x +  400

x^2 + 17x + 52 = x^2 + 9x +  400

Collect Like Terms

x^2 - x^2 + 17x - 9x =  400- 52

8x = 348

Divide both sides by 8

\frac{8x}{8} = \frac{348}{8}

x = \frac{348}{8}

x =43.5

Since the dimensions of the garden is W = x and L = x + 9

<em>Substitute 43.5 for x in both cases</em>

L = 43.5 + 9 = 52.5

W = 43.5

<em>Hence, the dimension of the garden is 52.5ft by 43.5ft</em>

5 0
3 years ago
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