Can u guys answer my question 13 and 14 pls

10 answers
Question:

Can u guys answer my question 13 and 14 pls

[tex]Can u guys answer my question 13 and 14 pls[/tex]


Answers

√2=1.414

then :√8 +2√32 +3√128+4√50

√8=√2³ =2√2

2√32=√2^5 = 4*2√2 = 8√2

3√128 = 3√2^6*2=8*3√2 =24√2

4√50 =4√5²*2= 20√2

add results : 2√2+8√2 +24√2+20√2=54√2

54√2=54×1.414=76.356 ( it is not in the options)

x=7-4√3

√x+ 1/√x

√(7-4√3) +1/√(7-4√3) =

(8-4√3)/√(7-4√3)

(8-6.93)/√(7-6.93) = 4 ( after rounded to the nearest whole number)

4 is your answer

11 = 10312 = 1.732

Step-by-step explanation:

[tex]\frac{1}{216^{\frac{-2}{3}}}+\frac{1}{256^{-\frac{3}{4}}}+\frac{1}{243^{-\frac{1}{5}}}\\\\Let \: start \:with ; \: \frac{1}{216^{\frac{-2}{3}}}\\\\\mathrm{Apply\:the\:fraction\:rule}:\\\quad \frac{-a}{b}=-\frac{a}{b}\\=\frac{1}{216^{-\frac{2}{3}}}\\216^{-\frac{2}{3}}\\\\\mathrm{Apply\:exponent\:rule}:\quad \:a^{-b}=\frac{1}{a^b}\\=\frac{1}{216^{\frac{2}{3}}}\\\\216^{\frac{2}{3}}\\=\left(6^3\right)^{\frac{2}{3}}\\\left(6^3\right)^{\frac{2}{3}}=6^{3\times \frac{2}{3}}=6^2\\=36=\frac{1}{\frac{1}{36}}\\[/tex]

[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{1}{\frac{b}{c}}=\frac{c}{b}=\frac{36}{1}=36\\\frac{1}{256^{-\frac{3}{4}}}\\\\256^{-\frac{3}{4}}=\frac{1}{64}\\\\=\frac{1}{\frac{1}{64}} = 64/1 = 6\\\\\frac{1}{243^{-\frac{1}{5}}}\\\\243^{-\frac{1}{5}}=\frac{1}{3}\\\\=\frac{1}{\frac{1}{3}} = 3/1 = 3\\\\\\=36+64+3\\=103[/tex]

[tex]\frac{3+\sqrt{6}}{5\sqrt{3}-2\sqrt{12}-\sqrt{32}+\sqrt{50}}\\\\2\sqrt{12} = =4\sqrt{3}\\\\\sqrt{32}=4\sqrt{2}\\\\\sqrt{50}=5\sqrt{2}\\\\=\frac{3+\sqrt{6}}{5\sqrt{3}-4\sqrt{3}-4\sqrt{2}+5\sqrt{2}}\\\\5\sqrt{3}-4\sqrt{3}-4\sqrt{2}+5\sqrt{2}=\sqrt{3}+\sqrt{2}\\\\\mathrm{Add\:similar\:elements:}\:-4\sqrt{2}+5\sqrt{2}=\sqrt{2}\\\\=5\sqrt{3}-4\sqrt{3}+\sqrt{2}\\\\\mathrm{Add\:similar\:elements:}\:5\sqrt{3}-4\sqrt{3}=\sqrt{3}\\\\[/tex]

[tex]\mathrm{Add\:similar\:elements:}\:5\sqrt{3}-4\sqrt{3}=\sqrt{3}\\\\=\sqrt{3}+\sqrt{2}\\\=\frac{3+\sqrt{6}}{\sqrt{3}+\sqrt{2}}\\\mathrm{Multiply\:by\:the\:conjugate}\:\frac{\sqrt{3}-\sqrt{2}}{\sqrt{3}-\sqrt{2}}\\\\=\frac{\left(3+\sqrt{6}\right)\left(\sqrt{3}-\sqrt{2}\right)}\\{\left(\sqrt{3}+\sqrt{2}\right)\left(\sqrt{3}-\sqrt{2}\right)}\\\\\left(3+\sqrt{6}\right)\left(\sqrt{3}-\sqrt{2}\right)=\sqrt{3}\\\\\left(\sqrt{3}+\sqrt{2}\right)\left(\sqrt{3}-\sqrt{2}\right)=1\\=\frac{\sqrt{3}}{1}\\\\=\sqrt{3}[/tex]

12 months- $66000
1 month- $66000/12= $5500

This was possible because of the ingenuity of the Egyptians as they developed basin irrigation. Their farming practices allowed them to grow staple food crops, especially grains such as wheat and barley, and industrial crops, such as flax and papyrus.

$ 9.99  almost  $ 10 she would save every week.

Step-by-step explanation:

Weekly Salary = $ 628

Tax deduction= $149.8

Superannuation Fund = 4.5 % of $ 628= $28.26

Mortgage = 8 % of 628= $ 50.24

Income after deductions = $ 628- $ 149.8 - $ 28.26- $ 50.24=  $ 399.7

10 % of $ 399.7 = $ 39.97 almost $ 40

In one week  she would save $39.97/4= $ 9.99 = $ 10

76 hours.

Step-by-step explanation:

This is $1060.20 divided by $13.95.

93.75 Kg

Step-by-step explanation:

Farmer spreads 25 kg fertilizer over an area of 4000 m square .

So, Over 1 m square , [tex]\frac{25}{4000}[/tex] kg of fertilizer will be needed

As we know , 1 hectare = 10,000 m square.

So, 1.5 hectare equals 15,000 m square.

So, for 15,000 m square , Fertilizer needed will be equal to                                      [tex]\frac{25}{4000}[/tex] ×15,000 = 93.75 Kg

So, 93.75 Kg of fertilizer is needed for 1.5 ha of land.

                                     

a) irrational

b) irrational

c) rational

d) rational

e) irrational

Note:

rational numbers are numbers that can be expressed in fractions.

irrational numbers are numbers that cannot be expressed in fractions i.e. they are never-ending-non-repeating decimals. examples √2, pi etc.

Calculate Paul's bonus.

$66 000 : 12 = $5 500

Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall. Irrigation also has other uses in crop production, including frost protection, suppressing weed growth in grain fields and preventing soil consolidation.

- wiki

Explanation:

sry i didn't know but thats my research plz mark me brainliest

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