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3 years ago

it takes 80 pounds of seed to completely plant 9-acre field. how many acre can be planted per pound of seed?

2 answers:

4 0

Since you're looking for how many acres can be planted per pound of seed, you'd have to divide 9 by 80. That's $\frac{9}{80}$ .

Once divided, you would get 0.1125.

0.1125 ACRES CAN BE PLANTED PER POUND OF SEED.

faltersainse [42]3 years ago

3 0

You will have to do 9 divided by 80, which is 9/80.

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the temperature of fridge compartment of a refrigerator is set at 8 °C . the fridge compartment is set at -10°C . what is differ

Otrada [13]

Step-by-step explanation:

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3 years ago

The specification for the pull strength of a wire that connects an integrated circuit to its frame is 10 g or more. In a sample

Wittaler [7]

Answer:

The 95% confidence interval for the difference is (-0.1888, 0.0202).

Step-by-step explanation:

Difference between proportions:

The distribution of the difference between two proportions has mean of the difference between these proportions and standard deviation is the square root of the sum of the variances. So

In a sample of 86 units made with gold wire, 68 met the specification

This means that:

$pX = \frac{68}{86} = 0.7907$

$sX = \sqrt{\frac{0.7907*0.2093}{86}} = 0.0439$

In a sample of 120 units made with aluminum wire, 105 met the specification.

This means that:

$pY = \frac{105}{120} = 0.875$

$sY = \sqrt{\frac{0.875*0.125}{120}} = 0.0302$

Difference:

$p = pX - pY = 0.7907 - 0.875 = -0.0843$

$s = \sqrt{sX^2 + sY^2} = \sqrt{0.0439^2+0.0302^2} = 0.0533$

Confidence interval:

$p \pm zs$

In which z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ , with $\alpha$ being 1 subtracted by the confidence level.

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Lower bound of the interval:

$p - zs = -0.0843 - 1.96*0.0533 = -0.1888$

Upper bound of the interval:

$p + zs = -0.0843 + 1.96*0.0533 = 0.0202$

The 95% confidence interval for the difference is (-0.1888, 0.0202).

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3 years ago

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Maksim231197 [3]

I set Jon an equation and solved for number of hours

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4 years ago

Which equation is not a linear function? OA) 2x - 3y = 9 OB) 2x+4y - 12 = 0 OC) y=-3x - 7 OD) 6x + 4y = 8

NeX [460]

OA is not the right one

6 0

3 years ago

Read 2 more answers

Area of this square 6yd

olga nikolaevna [1]

Hello!

To find the area of a square you multiply two of the sides together

All sides of a square are equal

6 * 6 = 36

The answer is 36 yd squared

Hope this helps!

5 0

3 years ago