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4 years ago

Can someone please help me with this? please & thank you!

Mathematics

1 answer:

Alchen [17]4 years ago

7 0

Simplifying: 4x + 52 + 8x + -10 = 90

Reorder the terms: 52 + -10 + 4x + 8x = 90

Combine like terms: 52 + -10 = 42 42 + 4x + 8x = 90

Combine like terms: 4x + 8x = 12x 42 + 12x = 90

42 + 12x = 90

Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + 12x = 90 + -42 Combine like terms: 42 + -42 = 0

0 + 12x = 90 + -42 12x = 90 + -42

Combine like terms: 90 + -42 = 48 12x = 48

Divide each side by '12'. x = 4 from https://www.geteasysolution.com/4x+52+8x-10=90

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Answer:

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3 years ago

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gayaneshka [121]

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4 years ago

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MatroZZZ [7]

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3 years ago

Read 2 more answers

Consider the population of four juvenile condors. Their weights in pounds are : 4, 5, 7, 12 (a) Let x be the weight of a juvenil

creativ13 [48]

Answer:

a) 4, 5, 7, 12

b) 7

c) 4.5, 6.5, 8, 6, 8.5, 9.5

d) 7.167

Step-by-step explanation:

We are given the following in the question:

4, 5, 7, 12

a) unique values for x

4, 5, 7, 12

b) mean of the population

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

$\mu =\displaystyle\frac{28}{4} = 7$

c) sampling distribution for samples of size 2

Sample size, n = 2

Possible samples of size 2 are (4,5),(4,7),(4,12),(5,7),(5,12),(7,12)

Sample means are:

$\bar{x_1} = \dfrac{4+5}{2} = 4.5\\\\\bar{x_2} = \dfrac{4+7}{2} = 6.5\\\\\bar{x_3} = \dfrac{4+12}{2} = 8\\\\\bar{x_4} = \dfrac{5+7}{2} = 6\\\\\bar{x_5} = \dfrac{5+12}{2} = 8.5\\\\\bar{x_6} = \dfrac{7+12}{2} = 9.5$

Thus, the list is 4.5, 6.5, 8, 6, 8.5, 9.5

d) mean of the sampling distribution

$\bar{x} = \dfrac{4.5 + 6.5 + 8+ 6 + 8.5+ 9.5}{6} = \dfrac{43}{6} = 7.167$

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3 years ago

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mars1129 [50]

Answer: 2/5

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4 years ago

Read 2 more answers