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Sindrei [870]
2 years ago
9

How do you write 8.07 x 10 ^-3 in standard form?

Mathematics
1 answer:
Vlad [161]2 years ago
5 0
Standard Form would be 0.00807
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A square has a side length of (X + 8) feet long. Which expression(s) represent(s) the perimeter of the square, in square feet? S
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D and E

Step-by-step explanation:

Perimeter = 4s

4(x + 8)

4x + 32

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What is the measure of ∠S?
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30 degrees

Step-by-step explanation:

The angles must add up to 180 degrees and the triangles have the same angles.

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Determine whether the statement below is always, sometimes, or never true. Justify your reasoning.
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This is sometimes true I say this because if u substitute your answers that can be different or can be the same.
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Anna35 [415]

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2.3h - 2.9d - 14

Step-by-step explanation:

6h - 3.7h - 7.9d + 5d - 14

= 2.3h - 2.9d - 14

5 0
2 years ago
I'm having a hard time with this question so someone help please
bulgar [2K]

Answer:

  7.7 km

Step-by-step explanation:

This question is asking you to find the third side of a triangle in which two sides and an angle not between them are given. The law of sines provides the necessary relationships.

<h3>Law of Sines</h3>

The Law of Sines tells you that triangle side lengths are proportional to the sine of the opposite angle. For this triangle TPJ, the relation is ...

  t/sin(T) = p/sin(P) = j/sin(J)

We are given T=68°, p=5.2 km, t=7.5 km, and we are asked to find the length of j, the TP distance.

<h3>Setup</h3>

We know the sum of angles in a triangle is 180°, and the sine of an angle is equal to the sine of its supplement. This lets us fill in the Law of Sines equation like this:

  7.5/sin(68°) = 5.2/sin(P) = j/sin(68°+P) . . . . . solve for j

<h3>Solution</h3>

This can be solved in two steps. First, we find angle P, then we use that to find length j.

  sin(P) = 5.2/7.5 × sin(68°) ≈ 0.642847

  P = arcsin(0.642847) ≈ 40.0045°

Now, we can find j:

  j = 7.5 × sin(68° +40.0045°)/sin(68°) ≈ 7.693 . . . km

The distance from the tower to the plane is about 7.7 km.

__

<em>Additional comment</em>

We have used T, P, and J to refer to the vertices at the tower, plane, and jet.

The triangle can also be solved using the Law of Cosines. In that case, the missing side will be the solution to a quadratic equation with irrational coefficients.

3 0
2 years ago
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