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3 years ago

How do I solve this I’m very confused

Mathematics

2 answers:

nadya68 [22]3 years ago

4 0

First Column, -x and 5 third column, -x and 2

Schach [20]3 years ago

4 0

$\boxed{2\:x}$ , x + 2 , 2 - x

5 - x , x , $\boxed{2x\:-\:1}$

$\boxed{x\:-\:1}$ , 2 , $\boxed{x\:+\:3}$

Each row and column sums to $\sf\purple{2x\:+\:4}$ .

$\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}$

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The area of a rectangular wall of a barn is 32 square feet. It’s length is 4 feet longer than the width. Find the length and wid

Gnom [1K]

Answer:

Step-by-step explanation:

Givens

Area = L * w

w = x

l = x + 4

Area = 32

Solution

32 = x(x + 4)

32 = x^2 + 4x

x^2 + 4x - 32

(x + 8)(x - 4)

Only x - 4 is going to make any sense

x - 4 = 0

x = 4

The width is 4

The length is 4 + 4 = 8

4*8 = 32 which is the area.

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3 years ago

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Mamont248 [21]

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3 years ago

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motikmotik

Correlation would be the correct answer

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3 years ago

The business college computing center wants to determine the proportion of business students who have personal computers (PC's)

Anastasy [175]

Answer:

Option A) reject null hypothesis if z is greater than 1.645

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

p = 30% = 0.3

Alpha, α = 0.05

Number of women belonging to union , x = 75

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.3\\H_A: p > 0.3$

This is a one-tailed(right) test.

Rejection Region:

$z_{critical} \text{ at 0.05 level of significance } = 1.645$

So, the rejection region will be

$z > 1.64$

That is we will reject the null hypothesis if the calculated z-statistic is greater than 1.645

Option A) reject null hypothesis if z is greater than 1.645

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3 years ago