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2 years ago

If 1llm, find the value of x

Mathematics

2 answers:

aleksandr82 [10.1K]2 years ago

8 0

Answer:

Step-by-step explanation:

HAHAHA

Lesechka [4]2 years ago

8 0

Answer:

E) 22

Step-by-step explanation:

$l || m\: \&\:line\: j\: is \: their \: transversal$ ..... (given)

$\therefore(5x - 16)\degree = (2x)\degree + 50\degree$

(Corresponding angles)

$\therefore(5x - 16)\degree = (2x+50)\degree$

$\therefore 5x - 16 = 2x+50$

$\therefore 5x - 2x = 16+50$

$\therefore 3x = 66$

$\therefore x =\frac {66}{3}$

$\therefore x =22$

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Yesterday, Linda had 71 baseball cards. Today, she gave d away. Using d, write an expression for the number of cards Linda has l

dezoksy [38]

Answer:

71-d

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

The combined area of two sqaures is 45 sqaure centimeters. Each side of one sqaure is twice as long as a side of the other sqaur

VMariaS [17]

Answer:the length of each side of the larger square is 6 centimeters.

Step-by-step explanation:

Let x represent the length of each side of the small square.

Let y represent the length of each side of the Large square.

The area of the small square is x^2

The area of the large square is y^2

The combined area of two squares is 45 square centimeters. This means that

x^2 + y^2 = 45 - - - - - - - - - - -1

Each side of one square is twice as long as a side of the other square. This means that

y = 2x

Substituting y = 2x into equation 1, it becomes

x^2 + (2x)^2 = 45

x^2 + 4x^2 = 45

5x^2 = 45

x^2 = 45/5 = 9

x = √9 = 3

Substituting x = 3 into y = 2x, it becomes

y = 2 × 3 = 6 centimeters

7 0

2 years ago

A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were de

olga2289 [7]

Answer:

Se=1.2

Step-by-step explanation:

The standard error is the standard deviation of a sample population. "It measures the accuracy with which a sample represents a population".

The central limit theorem (CLT) states "that the distribution of sample means approximates a normal distribution, as the sample size becomes larger, assuming that all samples are identical in size, and regardless of the population distribution shape"

The sample mean is defined as:

$\bar X =\frac{\sum_{i=1}^n x_i}{n}$

And the distribution for the sample mean is given by:

$\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})$

Let X denotes the random variable that measures the particular characteristic of interest. Let, X1, X2, …, Xn be the values of the random variable for the n units of the sample.

As the sample size is large,(>30) it can be assumed that the distribution is normal. The standard error of the sample mean X bar is given by:

$Se=\frac{\sigma}{\sqrt{n}}$