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4 years ago

Someone please helpppp!!no bs answers. geometry

Mathematics

1 answer:

DaniilM [7]4 years ago

6 0

Answer:

Line TB is congruent to line BR.

B is the midpoint of line TR.

Line TB plus line BR is equal to or congruent to line TR.

*wink face lol*

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WILL MARK BRAINLIEST!!! given j(x)= 7x+5 and k(x)=2x+1 What is (j-k)(1)

Semmy [17]

Answer:

$7 \times 1 + 5 - 2 \times 1 - 1 = 7 + 5 - 2 - 1 = 12 - 3 = 9$

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3 years ago

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If there are 360 grams of radioactive material with a half-life of 8 hours, how much of the radioactive material will be left af

lyudmila [28]

Answer:

There will be 22.5 grams left after 32 hours.

Step-by-step explanation:

A half-life is how long it takes for half of the amount to go away. In this case, we see that we have two half-life periods worth, which you can determine by dividing the total time by the half-life time.

32hrs/8hrs = 4 half lives.

Now we can raise 1/2 to the power of how many half lives we have (2). Then we multiply that by the amount in the sample.

(1/2)^4 * 360

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And this is an exponential function.

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3 years ago

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What is an important difference between statistics andâ parameters?

Ilia_Sergeevich [38]

Answer:

A characteristic , usually unknown of the population.

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An observed characteristic of a sample are known as statistics

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Step-by-step explanation:

Introduction:-

The outcome of a statistical experiment may be recorded either as a numerical value or as a descriptive representation.

Example:-1

When a pair of dice are tossed and the sum of the numbers on the faces is the outcome of interest, we record a numerical value.

Example :-2

If the students of a certain school are given blood tests and the type of blood is of interest, then a descriptive representation.

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The number of observations in the population is defined to be the size of the population

Sample:- A sample is a subset of population.

Samples are classified in two ways

Large sample : if the size of the sample n≥ 30 is called the large sample.

small sample: if the size of the sample n<30 is called the small sample.

Statistics uses different names and symbols to distinguish characteristics

of the population from those of a sample.

Parameters :-

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Characteristic of the population , such as its mean ,variance and standard deviations are population Parameters .

In symbolically mean of the population parameter is denoted by μ

In symbolically variance of the population parameter is denoted by σ²

In symbolically standard deviation of the population parameter is denoted by σ

Statistic :-

An observed characteristic of a sample are known as statistics

Estimate the use of a sample characteristic (statistic) to guess or approximate a population characteristic (parameter)

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In symbolically variance of the sample statistic is denoted by S²

In symbolically standard deviation of the statistic is denoted by S

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4 years ago

Is 10 irrational or rational

aev [14]

The number 10 Is Rational

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3 years ago

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What is the sale price of a shirt that was originally $25 but that has been marked down by 33 percent?

Vlad1618 [11]

100% = 25, 67% = 16.75

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4 years ago