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zavuch27 [327]
3 years ago
5

Estimate the answer to 342.21 – 49.29 by first rounding each number to the nearest tenth

Mathematics
1 answer:
vitfil [10]3 years ago
8 0
342.21 rounded to the nearest tenth is 342.2. 49.29 rounded is 49.3. So 342.2 - 49.3 = 292.9
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Calculate to the nearest 1/10th meter the length of the side of a 7th, 12th, and 30th hectare square plot.
Tems11 [23]

Answer and explanation:

To find : Calculate to the nearest 1/10th meter the length of the side of a 7th, 12th, and 30th hectare square plot.

Solution :

The area of the square is given by,

A=s^2 where s is the side length.

We know,  1 \text{ hectare}=10,000\ m^2

1) The area of square plot is 7 hectare.

Area in meter square is A=7\times 10000=70000\ m^2

Substitute the value in the formula,

70000=s^2

\sqrt{70000}=s

264.57=s

Side nearest to 1/10th meter is 264.8 meter.

2) The area of square plot is 12 hectare.

Area in meter square is A=12\times 10000=120000\ m^2

Substitute the value in the formula,

120000=s^2

\sqrt{120000}=s

346.41=s

Side nearest to 1/10th meter is 346.4 meter.

3) The area of square plot is 30 hectare.

Area in meter square is A=30\times 10000=300000\ m^2

Substitute the value in the formula,

300000=s^2

\sqrt{300000}=s

547.72=s

Side nearest to 1/10th meter is 547.7 meter.

5 0
3 years ago
Dylan paid a plumber $120 for 4 hours of labor. How much does the plumber charge per hour of labor?
Lady bird [3.3K]
All you have to do is divide the 120 by 4 because you will be splitting it up into a individual hour. So 120 divided by 4 = 30.
The plumber charges $30/hour.
6 0
3 years ago
Read 2 more answers
Arley’s Bakery makes fat-free cookies that cost $1.50 each. Arley expects 30% of the cookies to fall apart and break. Assume tha
Lesechka [4]
First we see the cost of making 200 cookies:
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 Arley wants to 50% markup on cost and produces 200 cookies:
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 Arley can sell the broken cookies for $ 1.40 each:
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 For each unbroken cookie the price will be then:
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 Arley should charge $ 2.61 for each unbroken cookie
6 0
4 years ago
Which of the following choices are contained in the figure below? Select all that apply:
Yuri [45]

Answer: 1 and 3

Step-by-step explanation: math is easy

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3 years ago
Solve the equation: 5 ( x - 2) + 4 ( 3 + x) = 20​
bixtya [17]

Answer:

x=2

Step-by-step explanation:

5 ( x - 2) + 4 ( 3 + x) = 20​

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Subtract 2 from each side

9x+2-2 = 20-2

9x = 18

Divide each side by 9

9x/9 = 18/9

x = 2

3 0
3 years ago
Read 2 more answers
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