3 years ago

How many zeros are significant figures in a measured mass of 0.010010 g?

Mathematics

1 answer:

tekilochka [14]3 years ago

4 0

Answer: 3

The first two zeros are not sig figs, but the next three zeros are sig figs

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Determine the approximate value of A.

bonufazy [111]

Answer:

40 degrees

Step-by-step explanation:

If all triangles add up to 180°, the 180-104-36=40, so the answer is 40°

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3 years ago

A board of length 7 divided by the quantity x minus 2 end of quantity meters was cut into two pieces. If one piece is 3 divided

bulgar [2K]

Answer:

Length of other board $=\frac{4x+20}{x^{2} -4}$ metres

Step-by-step explanation:

Given: Length of board = $\frac{7}{x-2}$ metres

Length of board was divided into two.

Length of one piece = $\frac{3}{x+2}$ metres

Let $l$ = length of the other board

Length of the other board = Length of board - Length of one piece

So, $l=\frac{7}{x-2}-\frac{3}{x+2}$

$l=\frac{7(x+2)-3(x-2)}{(x-2)(x+2)} \\\\l=\frac{7x+14-3x+6}{x^{2} -4} \\\\l=\frac{4x+20}{x^{2} -4}$

Thus, length of the other board $=\frac{4x+20}{x^{2} -4}$ metres

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3 years ago

Solve the equation 4x^2-12x=7 algebraically for x.

ss7ja [257]

  4x² - 12x = 7
  - 7 - 7
4x² - 12x - 7 = 0
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2x(2x) + 2x(1) - 7(2x) - 7(1) = 0
  2x(2x + 1) - 7(2x + 1) = 0
  (2x - 7)(2x + 1) = 0
2x - 7 = 0 or 2x + 1 = 0
+ 7 + 7   - 1 - 1
2x = 7 2x = -1
2 2 2 2
x = 3¹/₂     or     x = ⁻¹/₂

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yawa3891 [41]

He made $64.80 commission I think. 9% of $720 is $64.80

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The length would be 86 yards.

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