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3 years ago

You measure the width of a doorway and find that it is 1.20 m wide. Find the greatest possible error of your measurement

1 answer:

8 0

Given that the distance between two lines in the measurement instrument is 0.01m, the maximum error should be 0.01m/2 = 0.005 m.

If you do a good work, the real measure is 1.20m +/- 0.005m, this is between 1.195 and 1.205.

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ss7ja [257]

Answer:

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Step-by-step explanation:

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3 years ago

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A farmer is able to prepare 1/2 are of soil in 3 days. How long will it take him to prepare 2 1/4 acres of soil?

Alexxx [7]

Answer:

x = 13 1/2 days

Step-by-step explanation:

1/2 acre 2 1/4 acre

------------ = -------------------------

3 days x days

using cross products

1/2 * x = 2 1/4 * 3

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3 years ago

The terms in sequence A increase by 3. The terms in sequence B increase by 8. In which sequence do the terms form a steeper line

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B has the steeper slope because the rate of change of values is much higher than A

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3 years ago

Please help me :)) algebra 2! what are the real roots?

irina1246 [14]

Answer:

Step-by-step explanation:

So we have the equation:

$3(x-4)^\frac{4}{3}+16=64$

First, let's subtract 16 from both sides:

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Now, let's divide both sides by 3:

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Remember that with fractional exponents, we can move the denominator into the root position. Therefore:

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Let's take the fourth root of both sides. Since we're taking an even root, make sure to have the plus-minus symbol!

$\sqrt[3]{x-4} =\pm 2$

Cube both sides. Since we're cubing, the plus-minus stays.

$x-4=\pm 8$

Add 4 to both sides.

$x=\pm 8+4$

Calculator:

$x=8+4\text{ or } x=-8+4\\x=12\text{ or } x=-4$

So, our answer is A.

And we're done!

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