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3 years ago

a square has a perimeter of 38 inches we want to know the length of each side chose the best model for this problem

Mathematics

1 answer:

Vesna [10]3 years ago

7 0

48 i think I don’t nun of this that I why I got it to get answers not give them smh

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8 x 10-3 is how many times as great as 4 x 10-6?

Levart [38]

Answer:

About two times greater.

Step-by-step explanation:

8 times 10 minus 3 equals 77.

4 times 10 minus 6 equals 34.

77 minus 34 is 43

43 minus 34 is 9.

34 can only be put into 77 two times

5 0

4 years ago

Convert equation from slope intercept form to standard form y=-7/3x+1

Andrews [41]

Answer:

7x + 3y = 3

4 0

2 years ago

5. The superintendent of the local school district claims that the children in her district are brighter, on average, than the g

anygoal [31]

Answer:

We conclude that children in district are brighter, on average, than the general population.

Step-by-step explanation:

We are given the following data set:

105, 109, 115, 112, 124, 115, 103, 110, 125, 99

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1117}{10} = 111.7$

Sum of squares of differences = 642.1

$S.D = \sqrt{\frac{642.1}{49}} = 8.44$

We are given the following in the question:

Population mean, μ = 106

Sample mean, $\bar{x}$ = 111.7

Sample size, n = 10

Alpha, α = 0.05

Sample standard deviation, s = 8.44

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 106\\H_A: \mu > 106$

We use one-tailed(right) t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{111.7 - 106}{\frac{8.44}{\sqrt{10}} } = 2.135$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = 1.833$

Since,

$t_{stat} > t_{critical}$

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

We conclude that children in district are brighter, on average, than the general population.

4 0

3 years ago

PLSSSSSS HELPPPP MEEE WITHH THISS QUESTION ASAP NO GUESSING AND ANSWER CORRECTLY!!!!!!

DIA [1.3K]

Answer:A.Very Crowded

I am 100% positive

Step-by-step explanation:

The first arrivals were the people who made up Washington society. ... Jackson found himself pressed into a situation with his back to a wall until his people were able to get him away from the crowd, and back to his hotel. The sheer number of people inside the White House led to collisions with furniture and food and yeah.

8 0

3 years ago

Which of the following statements must be true about the polynomial function f(x)? If 1+ the sqrt of 13 is a root of f(x), then

son4ous [18]

The correct answer is: if $1 + 13i$ is a root of $f(x)$ , then $1 - 13i$ is also a root of $f(x)$ .

In fact, every polynomial has real and/or complex solutions. If all solutions are real, we're good. But if not all of them are real, then the complex ones come in couple of conjugate solutions. Since $1 + 13i$ and $1 - 13i$ are conjugate complex numbers, if one of them is a solution, the other must be as well.

7 0

3 years ago

Read 2 more answers