3 years ago

PLEASE HELP ME WITH THIS

Mathematics

1 answer:

Alika [10]3 years ago

8 0

Answer:

2 $\frac{1}{5}$

Step-by-step explanation:

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What is the following product?

KiRa [710]

ANSWER

$2 \sqrt{42} +7 \sqrt{2}- 6- \sqrt{21}$

EXPLANATION

The given product is:

$( \sqrt{14} - \sqrt{3} )( \sqrt{12} + \sqrt{7} )$

We expand using the distributive property to obtain:

$\sqrt{14}( \sqrt{12} + \sqrt{7}) -\sqrt{3}( \sqrt{12} + \sqrt{7} )$

Extract the perfect squares to get:

$\sqrt{14}(2 \sqrt{3} + \sqrt{7}) -\sqrt{3}( 2\sqrt{3} + \sqrt{7} )$

Expand further to get;

$2 \sqrt{42} +7 \sqrt{2}- 2(3) - \sqrt{21}$

This simplifies to,

$2 \sqrt{42} +7 \sqrt{2}- 6- \sqrt{21}$

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3 years ago

Rectangle with a side length of 11" and a diagonal of 14" what is the perimeter

notka56 [123]

Answer:

10sqrt3+22

Step-by-step explanation:

Ok, let us imagine it as a sort of rectangle split upon its diagonal.

Using that, we can Pythag it out,

11^2+b^2=14^2

121+b^2=196

b^2=75

b=sqrt75

b=5sqrt3

Ok, using this info, we find the perimeter,

5sqrt3+5sqrt3+11+11

10sqrt3+22

The answer is 10sqrt3+22

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Yuki888 [10]

The equations (-75)(-49)=3,675 the answer

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3 years ago

Answer number 3 quickly i am in a rush

SVEN [57.7K]

Answ34.5

Step-by-step explanation:

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Total cost is $14 plus 10% tip

castortr0y [4]

Answer:

the tip will be 1.40 which will make your bill total 15.40 hope this helps

Step-by-step explanation:

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