3 years ago

Help please thank you!!!

Mathematics

1 answer:

Usimov [2.4K]3 years ago

3 0

Answer:

0.1. the first onw us correct by the way !!! edgenty SUCKSSS!

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Use mental math to evaluate the expression 6(31)+6(4)-6(15)

Finger [1]

Remember distributive property
a(b+c)=ab+ac
we can ervers it

6(31)+6(4)-6(15)=6(31)+6(4)+6(-15)=6(31+4-15)=6(20)=120

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$24x^{2} +7x^{2} =$

step-by-step explanation:

You have to solve this to get your answer. This is a case where you have to use the pythagorean theorem.

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Free_Kalibri [48]

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3686

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Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary. B = 67°, a

kvasek [131]

Among many other formulas, the area of a triangle is

$S = \frac 1 2 a c \sin B$

where B is the angle between sides a and c.

$S=\frac 1 2(10)(20) \sin 67^\circ \approx 92.05 \textrm{ sq cm}$

Answer: 92.05 sq cm, first choice

Bonus. Here's a formula for the area S of a triangle your teacher doesn't know:

$16S^2 = 4a^2b^2 -(c^2-a^2-b^2)^2=(a^2+b^2+c^2)^2-2(a^4+b^4+c^4)$

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