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Masja [62]
2 years ago
10

Can someone help me. Please. Algebra.

Mathematics
1 answer:
makkiz [27]2 years ago
7 0

Answer:

what's the question and I'll try my best to answer

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Estimate the following quantities without using a calculator. Then find a more precise result, using a calculator if necessary.
zubka84 [21]

Explanation:

a. It is so easy to double a number that no approximation is necessary.

  31,000 × 200 = 3.1×10⁴ × 2×10² = 6.2×10⁶ exactly

__

b. 6.2×10³ × 5.2×10⁶ ≈ 6×5×10⁹ = 3×10¹⁰ approximately

The approximation can be refined a bit by taking the ".2" into account:

  6.2×10³ × 5.2×10⁶ ≈ (6×5 + .2×(6+5))×10⁹

  = 32.2×10⁹ = 3.22×10¹⁰ approximately

Actual product: 3.224×10¹⁰.

For most purposes, the approximation is an adequate approximation, as it it within 10% of the actual value.

__

c. 9×10⁶ -2.3×10⁴ ≈ 9×10⁶ approximately

A better approximation is to actually subtract an approximation of the smaller number:

  9×10⁶ -2.3×10⁴ ≈ (9 - 0.02)×10⁶ ≈ 8.98×10⁶ approximately

The actual value uses all of the digits of the smaller number:

  9×10⁶ -2.3×10⁴ ≈ (9 - 0.023)×10⁶ = 8.977×10⁶ exactly

As in part B, either approximation is adequate for most purposes, as the difference from the actual value is less than .3%.

_____

The accuracy required of an approximation, hence the work you expend improving accuracy, should depend on the need in the final application of the number. Often, approximations are used for budget or resource planning purposes where some "slop" is allowed or even expected.

They can also be used in engineering applications, where the error needs to be on the side of more safety (rather than less).

7 0
3 years ago
In geometry words describe a way to seperate triangles Into other triangles
Alja [10]
Start at one of the vertices and draw a line from there to a point on the oposite side, not ending at another vertex
6 0
3 years ago
Read 2 more answers
PLEASE HELP ME FIND THE ANSWER
n200080 [17]
B is true.
I think E is also true.
4 0
3 years ago
Helppppppppppppppp plsssssssssssssssss
Burka [1]
Lol the answer is 41
4 0
3 years ago
Read 2 more answers
Which equation represents a line with a slope of 4 that passes through the point (1, 3)?
alina1380 [7]

Answer:

y = 4x - 1

Step-by-step explanation:

The line has a slope of 4.

And passes through the point (1,3)

Taking another point (x,y) on the line;

\frac{y - 3}{x - 1} = 4

y - 3 = 4x - 4

y = 4x - 4 + 3

y = 4x - 1

3 0
3 years ago
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