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Natali5045456 [20]
3 years ago
9

Rationalise this please........it's verey imp to me....​

Mathematics
1 answer:
dalvyx [7]3 years ago
3 0

Step-by-step explanation:

i) root3 + root5 × 2root5 / 2root5 × 2root5

= 2root15 + 10 / 20

ii) root3 - root7 × root3 - root7 / root3 + root7 × root3 - root7

= 3 - 2root21 + 7 / 3 - 7

= 10 - 2root21 / -4

= -10 - 2root21 / 4

iii) root2 + root7 × 2root2 + root3 / 2root2 - root3 × 2root2 + root3

= 4 + 2root14 + root6 + root21 / 8 - 3

= 4 + 2root14 + root6 + root21 / 5

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3. What is the measure of angle B from the right triangle below?
Talja [164]

Answer:

angle B = 78.46°

Step-by-step explanation:

Use the cosine ratio

cosB=\frac{2}{10} =0.2

B=cos^{-1} (0.2)=78.46^{0}

Hope this helps

8 0
2 years ago
Help. MEEEEEEEEEEEEEEEEEE
a_sh-v [17]

Answer:

Step-by-step explanation:

2 Loaves of Bread is = 2.25*2 = 4.5 cups

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6 0
2 years ago
Read 2 more answers
A man comes into a store and steals $100 from the register without the owner knowledge. Comes back and buys $70 worth of stuff a
emmainna [20.7K]

Answer

The owner lose is $100 .

Reason

As given

A man comes into a store and steals $100 from the register without the owner knowledge.

Comes back and buys $70 worth of stuff and the owner gives him $30 in change.

i.e First man steals $100  than give back to owner when he buys  $70 worth of stuff and  the owner gives him $30 in change.

Therefore the total owner lose is the sum of  $70 worth of stuff and  $30 in change.

Total owner lose = $70 + $30

                            = $100

Therefore the owner lose be  $100 .

Hence proved


4 0
3 years ago
Read 2 more answers
(i need a hug)<br> 1.776e^23 in stanard form
stepladder [879]

Answer:

*Hugs*

Step-by-step explanation:

https://pad let.com/padang1719/qi9nahg6ovhvm479?utm

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3 years ago
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Someone help on this problem please
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The answer should Ben 2
8 0
3 years ago
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