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3 years ago

Can I please get help on these and thanks!!!!

Mathematics

2 answers:

GuDViN [60]3 years ago

7 0

Question 4:

A.) Documentation Files (Field Reports)

Explanation:

Archaeologists record their findings in documentation files or field reports because that would be the more formal and official to jot down important information.

Question 5:

B.) Information Collection and Review

Explanation:

Archaeologists verify existing archaeological records through the information collection and review stage. This one was a tricky question, because it's asking about <em>existing </em>records, not newly found records.

Hope this helps ya :D

stiv31 [10]3 years ago

4 0

Answer:

Step-by-step explanation:

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Aneli [31]

He had 19 trees to start with. also love the pfp :3

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3 years ago

Solve by completing the square <br><br> 3x^2-7x-1

docker41 [41]

Answer:

$x=\frac{7+\sqrt{61}}{6},\:x=\frac{7-\sqrt{61}}{6}$

Step-by-step explanation:

$a=3,\:b=-7,\:c=-1:\quad x_{1,\:2}=\frac{-\left(-7\right)\pm \sqrt{\left(-7\right)^2-4\cdot \:3\left(-1\right)}}{2\cdot \:3}$

$x=\frac{7+\sqrt{61}}{6},\:x=\frac{7-\sqrt{61}}{6}$

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3 years ago

Simplified radical form of 4800 feet how many seconds was the diver in a free fall? Using functions (t)=16t^2 models the distanc

amm1812

Answer:

The diver will be in free fall for $10\sqrt{3}$ seconds.

Step-by-step explanation:

The distance in feet, that an object falls in t seconds is given by the function $h(t) = 16t^{2}$ .

Now, given that the height is 4800 feet and we have to calculate the number of seconds the diver was in a free fall.

Therefore, $4800 = 16t^{2}$

⇒ $t^{2} = \frac{4800}{16} = 300$

⇒ $t = \sqrt{300} = \sqrt{100 \times 3} = 10\sqrt{3}$ seconds.

Therefore, the diver will be in free fall for $10\sqrt{3}$ seconds. (Answer)

5 0

4 years ago

Prove 2SinAsinB =cos(A-B)-cos(A+B)

Leni [432]

Right side of the equation:
cos ( A - B ) - cos ( A + B ) =
= cos A cos B + sin A sin B - ( cos A cos B - sin A sin B ) =
= cos A cos B + sin A sin B - cos A cos B + sin A sin B =
= 2 sin A sin B - left side of the equation ( correct )

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3 years ago

In which quadrant is sec e< 0 and tan e > 0?

iren2701 [21]

Answer:

Step-by-step explanation:

Because Tangent is positive in third quadrant

7 0

3 years ago