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Elena-2011 [213]
3 years ago
5

Solve the quadratic equation below: 4x^2 -100=0

Mathematics
2 answers:
anzhelika [568]3 years ago
6 0

Answer:

solution given:

4x^2 -100=0

4x²=10²

(2x)²=10²so

2x=±10

x=±10/2

so

x=5

or x=-5

GrogVix [38]3 years ago
3 0

Answer:

The answer is x=-5

Step-by-step explanation:

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Draw a diagram!  Lets say the width is x, then the length must be 2x.
   
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3 years ago
Saturn’s rings span up to about (7.5 · 10-1) of the distance between the Earth and its moons. If Saturn’s rings span up to (2.82
RUDIKE [14]
2.82 × 10^5 = (7.5×10^-1) × Length between the earth and the moon
Length between the earth and the moon = (2.82×10^5)÷(7.5×10^-1)                                                                     = 376000                                                                     = 3.76×10^5
i think this is correct hope it helps. 
7 0
3 years ago
Read 2 more answers
Which graph represents the inequality 3y−5x>−6?
Lelechka [254]

Answer:Top Left

Step-by-step explanation:

4 0
2 years ago
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Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.0 m lon
Paladinen [302]
<h3>Answer: Choice A) 212 square meters</h3>

========================================================

Explanation:

14.10 has four sig figs. The 0 at the end is significant. This measurement is accurate to the hundredths place. If the author wrote 14.1, then it would be accurate to the tenths place with three sig figs.

15.0 has three sig figs. The 0 is significant. If they wrote 15 or 15. then we'd be dealing with 2 sig figs instead; however they placed the 0 there to tell the reader "this measurement is accurate to the tenths place"

---------------------

Multiply the values given

14.10*15.0 = 211.5

Round that to three sig figs. We pick the smaller sig fig count to round to since we cannot be certain it is accurate to four sig figs. In a sense, we pick the weakest link and use that to determine rounding when it comes to multiplication and division.

This means 211.5 rounds to 212

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3 years ago
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