3 years ago

Need a little help with this problem!

Mathematics

1 answer:

charle [14.2K]3 years ago

6 0

Answer:

The second one

Step-by-step explanation:

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chelsea and shawna are selling cheesecakes for a school fundraiser. customers can buy french silk cheesecakes and apple cheeseca

Juliette [100K]

Answer:

Shawna price went up by 12 dollars because of 2 extra french silks. I divides 12 by 2 and got 6 dollars.I subtracted 12 dollars from 20 and divides the rest by 3 and got 2.66$

FRENCH SILK CHEESECAKE: 6$
APPLE CHEESECAKE: 2.66$

6 0

3 years ago

√(25 - 10 √(3) + 3)<br> (not as a decimal)

nikitadnepr [17]

Answer:

$\huge\boxed{\sqrt{25-10\sqrt3+3}=5-\sqrt3}$

Step-by-step explanation:

$\sqrt{25-10\sqrt3+3}=(*)\\\\25=5^2\\3=(\sqrt3)^2\\10\sqrt3=(2)(5)(\sqrt3)\\\\(*)=\sqrt{5^2-(2)(5)(\sqrt3)+(\sqrt3)^2}\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=\sqrt{(5-\sqrt3)^2}\\\\\text{use}\ \sqrt{a^2}=|a|\\\\=|5-\sqrt3|=5-\sqrt3\\\\^{\text{because}\ 5>\sqrt3\to5-\sqrt3>0}$