A rectangular window has a length of 81.47 cm and a width of 34.2 CM what is the least ​

Answers

Answer 1
Answer: The least precise measurement of the perimeter of the window is 231.30
Step-by-step explanation:
The least price measurement mean a value with the least number of significant figures.calculate the perimeter in this case as;
Perimeter of a rectangle = 2(l+w) where l is the length and w is the width
Perimeter= 2(81.47 + 34.2)
Perimeter=2(115.67)
Perimeter=231.34
Perimeter=231.30(4 significant figures)

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Is 6 a solution of 5(c - 9) = - 15?

Answers

5( c - 9 ) = - 15


Opening Brackets ,



= > 5( c ) - 5( 9 ) = - 15

= > 5c - 45 = - 15



Add 45 on both sides,



= > 5c - 45 + 45 = - 15 + 45

= > 5c = 30



Divide by 5 on both sides,

= > 5c / 5 = 30 / 5

= > c = 6






Hence, 6 is the solution of the given equation.
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Please help, will mark you as brainleist!!!

Answers

Answer: 1/2

Step-by-step explanation: is divided by a half.

sorry if it’s wrong :(

Answer:

1/2

Step-by-step explanation:

As when we multiply each side of the left rectangle by 1/2, we get the right one's dimensions..

Solve the equation. X^5-5x^3+4x=0

Answers

Answer:

Wait

Step-by-step explanation:

Is a equation or polynomial

Answer:

0, +/- 1. +/- 2

Step-by-step explanation:

x^(5) -5x^(3) +4x=0Write the equation in the form of P(x) = 0.

x(x^(4) - 5x^(2)  + 4) = 0Factor out the GCF, x.

x(x^(2))^(2)  - 5x^(2) + 4 = 0 Factor (x^(2))^(2)- 5x^(2) + 4 = 0.

x = 0,(x^(2))^(2)  - 5x^(2)  + 4 = 0 Let a = x^(2) and substitute.

a^(2)  - 5a + 4 = 0Factor.

(a - 4)(a - 1) = 0 Replace a with x^(2).

(x^(2)  - 4)(x^(2) -1) = 0Factor (x^(2)  - 4)as a difference of squares.

(x -2)(x+2)(x^(2) -1) = 0Use the Zero Product Property

x = 2, x = -2, x^(2)  = -1

x = 0, 1, -1, 2, -2

Consider random samples of size 40 from a population with proportion 0.15. (a) Find the standard error of the distribution of sample proportions.
Round your answer for the standard error to three decimal places.
mean=______
standard error=_______
(b) Is the sample size large enough for the Central Limit Theorem to apply?
1. Yes
2. No

Answers

The standard error of the distribution of sample proportions is 0.056 and mean is 0.15.

Yes, the sample size is enough for the Central Limit Theorem to apply.

(a). Given that, size of sample, n=40

        Proportion, p=0.15

In the distribution of sample proportions, mean \mu=p  

and, standard error = \sqrt{(p(1-p))/(n) }

So, mean \mu=0.15

Standard error =\sqrt{(0.15(1-0.15))/(40) }=0.056

(b). The Central Limit Theorem applies if np > 5 .

 np=40*0.15=6>5

Thus, the Central Limit Theorem is applied.

Learn more:

brainly.com/question/22233199

Answer:

a) The mean is 0.15 and the standard error is 0.056.

b)  1. Yes

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = (\sigma)/(√(n)).

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For proportions p, in samples of size n, the mean is \mu = p and the standard error is s = \sqrt{(p(1-p))/(n)}. The Central Limit Theorem applies is np > 5 and np(1-p)>5.

In this question:

n = 40, p = 0.15

So

(a) Find the mean and the standard error of the distribution of sample proportions.

\mu = 0.15, s = \sqrt{(0.15*0.85)/(40)} = 0.056

So the mean is 0.15 and the standard error is 0.056.

(b) Is the sample size large enough for the Central Limit Theorem to apply?

np = 40*0.15 = 6 > 5

np(1-p) = 40*0.15*0.85 = 5.1>5

So yes

A quadrilateral has angles that measure 44°, 89°, and 127°. What is the measure of the fourth angle?

Answers

The sum of angles in a quadrilateral = 360 degrees.

Let the fourth angle be x:

Therefore:  44 + 89 + 127 + x = 360

260 + x = 360

x = 360 - 260

x = 100

x = 100°

I hope this helps.

Help me on this please (10 points)Also, this question relates with the first one so...

___x 9=___

Answers

She can pack 27 gifts in three hours. 3(hours) x 9(gifts per hour) = 27(gifts)
27 gifts in 3 hours.