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tatyana61 [14]
3 years ago
14

Perform these calculations, following the rules for significant figures.

Mathematics
2 answers:
xeze [42]3 years ago
5 0
For addition and subtraction the answer should have the same number of decimal places as the least number of decimal places involved in the operation. For multiplication and division the number of significant value of the answer should be the same as the least number of significant values of the involved numbers.

a. 26 x 0.02584 = 0.67
b. 15.3: 1.1 = 14
c. 782.45 - 3.5328 = 778.92
d. 63.258 + 734.2 = 797.5
Dmitrij [34]3 years ago
4 0

Answer:

polar bear

Step-by-step explanation:

black bear

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The mean, the median, and the mode of a set of numbers can sometimes be equal to each other.
yaroslaw [1]

Answer:

True.

Step-by-step explanation:

A data set can have the same mean, median, and mode.

3 0
4 years ago
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if the second angle is 20% more than the first angle and the third angle is 20% less than the first angle in a triangle, then fi
Mumz [18]

Answer:

Step-by-step explanation:

If the second angle's measure is based on the first angle's measure, and the third angle's measure is also based on the first angle's measure, then the first angle is the main angle. We will call that x.

1st angle: x

2nd angle: x + 20%

3rd angle: x - 20%

By the Triangle Angle-Sum Theorem, all those angles will add up to 180, so:

x + (x + 20%) + (x - 20%) = 180 and

3x = 180 so

x = 60. That means that

2nd angle: 60 + (.2*60) which is

60 + 12 = 72 and

3rd angle: 60 - (.2*60) which is

60 - 12 = 48. Let's check those angles. If

∠1 = 60

∠2 = 72

∠3 = 48,

then ∠1 + ∠2 + ∠3 = 180 and

60 + 72 + 48 does in fact equal 180, so you're done!

3 0
4 years ago
The value of tan60° is ______ . * 1 point 1/√3 0 1 √3
dusya [7]

Answer:

Therefore, the exact value of Tan 60 degrees is √3. We can also derive the values of tan 0°, 30°, 45°, 90°, 180°, 270° and 360° in the same way

6 0
4 years ago
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(9 x 10⁶)(8 x 10⁻⁴)= ?
ycow [4]

Answer: 7.2x10 3

Step-by-step explanation:

7 0
3 years ago
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In parallelogram ABCD, diagonals AC------- and BD------- intersect at point E, AE = x + 16, and CE=5x
Nataly [62]

Answer:

AC = 40

Step-by-step explanation:

A quadrilateral is a polygon shape with four sides and four angles. The interior angle of a quadrilateral sums up to 360°.

A parallelogram is a quadrilateral (has four sides and four angles) in which has two pair of opposite sides are parallel to each other. The diagonals of a parallelogram bisect each other.

Given parallelogram ABCD:

Diagonals AC and BD bisect each other at point E. Hence:

AC = AE + CE (line segment addition postulate)

Also:

AE = CE (diagonal BD bisects AC at point E).

Hence; x + 16 = 5x

5x - x = 16

4x = 16

x = 4

AE = x + 16 = 4 + 16 = 20; CE= 5x = 5(4) = 20

AC = AE + CE = 20+ 20 = 40

3 0
3 years ago
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