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2 years ago

Simplify. Your answer should only contain positive exponents (−2−2)5•44

Mathematics

2 answers:

tiny-mole [99]2 years ago

8 0

Answer:

-21.76

Step-by-step explanation:

(-2-2)5•44

-4×5•44

-4×544 (2 decimal places)

100

-2176 (multiply -4 x544)

100

Since 100 has two zeros, -21•76 becomes the answer.

Zolol [24]2 years ago

7 0

I got -880 , i’m not sure you can get only
positive exponents...

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Find the area of the given triangle to the nearest square unit. Angle a= 30 degrees, b=10, angle B=45 degrees

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Answer:

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Step-by-step explanation:

Suppose we have a general triangle like the one shown in the figure.

We know the angle A, the angle B and the length b.

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$A + B + C = 180\\\\30 + 45 + C = 180$

We solve the equation and thus we find the angle C.

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Now we use the sine theorem to calculate the sides c and a.

The sine theorem says that:

$\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}$

Then

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$\frac{sin(30)}{\frac{sin(45)}{10}}=a$

$a=7.071$

Also

$\frac{sin(105)}{c}=\frac{sin(45)}{10}$

$\frac{sin(105)}{\frac{sin(45)}{10}}=c$

$c=13.660$

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Where s is:

$s=\frac{a+b+c}{2}$

Therefore

$s=\frac{7.071+10+13.660}{2}$

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