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jeyben [28]
3 years ago
11

How can estimating be helpful?

Mathematics
2 answers:
yuradex [85]3 years ago
7 0
It helps you get the correct answer
Mars2501 [29]3 years ago
4 0
Estimating can simplify an answer, and can be used as a reference to compare the actual answer to. If the estimate and the actual answer are similar, your answer is typically correct.
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What is the product?( square root 3x+ square root 5) (square root 15x+ 2 square root 30)
hichkok12 [17]
(\sqrt{3x}+\sqrt5)\cdot(\sqrt{15x}+2\sqrt{30})\\\\=(\sqrt{3x})(\sqrt{15x})+(\sqrt{3x})(2\sqrt{30})+(\sqrt5)(\sqrt{15x})+(\sqrt5)(2\sqrt{30})\\\\=\sqrt{(3x)(15x)}+2\sqrt{(3x)(30)}+\sqrt{(5)(15x)}+2\sqrt{(5)(30)}\\\\=\sqrt{45x^2}+2\sqrt{90x}+\sqrt{75x}+2\sqrt{150}\\\\=\sqrt{9x^2\cdot5}+2\sqrt{9\cdot10x}+\sqrt{25\cdot3x}+2\sqrt{25\cdot6}\\\\=\sqrt{9x^2}\cdot\sqrt5+2\sqrt9\cdot\sqrt{10x}+\sqrt{25}\cdot\sqrt{3x}+2\sqrt{25}\cdot\sqrt6
=3x\sqrt5+2\cdot3\sqrt{10x}+5\sqrt{3x}+2\cdot5\sqrt6\\\\=3x\sqrt5+6\sqrt{10}+5\sqrt{3x}+10\sqrt6
3 0
3 years ago
Read 2 more answers
To investigate the relationship between age and preference for two mayoral candidates in an upcoming election, a random sample o
OLga [1]

Answer:

0.15401

Step-by-step explanation:

Given that test statistic = 3.7408

From the question, we could deduce that, this is scenario could be analysed A ONE - WAY analysis of Variance method as it has one independent variable, Age subdivided into 3 levels

The test statistic value obtained is the Chisquare (χ²) value, which equals 3.7408

To Obtain the requested Pvalue, we need the degree of freedom, which is :

(Number of columns - 1) * (number of rows - 1)

Number of candidates = 2

Number of levels = 3

Hence,

Degree of freedom = (3 - 1) * (2 - 1) = 2 * 1 = 2

Using the Chisquare Pvalue calculator or distribution table :

χ²;3.7408, 2 = 0.154062

Pvalue = 0.1541

3 0
3 years ago
How to solve Increase $24 by a half of $36
seraphim [82]
36 divided by 2 = 18 and 18 + 24 = 42
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3 years ago
Marking brainliest <br><br> Please help
faust18 [17]

Answer:

sin = 2/3

cos = sqrt5/3

tan = 2/sqrt5

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3 years ago
Type a related division fact for 10 × 12 = 120.
Nikitich [7]

Answer:

120 divided by 10 is 12. 120 divided by 12 is 10.

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2 years ago
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