How many significant digits in 8.90

Mathematics

2 answers:

PtichkaEL [24]3 years ago

8 0

Answer:

Step-by-step explanation:

s344n2d4d5 [400]3 years ago

8 0

Answer:

Only 2, the 0 is not needed so it should just be 8.9

Step-by-step explanation:

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When 8 is subtracted from a certain number and the result is multoplied by 3

Natali [406]

15
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6 0

3 years ago

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An altitude is drawn from the vertex of an isosceles triangle, forming a right angle and two congruent triangles. As a result, t

Alenkinab [10]

Answer:

The triangle's perimeter is 61.77 inches.

Step-by-step explanation:

Since an altitude is drawn from the vertex of an isosceles triangle, forming a right angle and two congruent triangles, and as a result, the altitude cuts the base into two equal segments, and the length of the altitude is 26 inches, and the length of the base is 9 inches, to find the triangle's perimeter the following calculation must be performed:

Isosceles triangle = 2 equal sides

To obtain the value of the sides, the Pythagorean theorem must be applied on the right triangle formed with the altitude.

(9/2) ^ 2 + 26 ^ 2 = X ^ 2

4.5 ^ 2 + 26 ^ 2 = X ^ 2

20.25 + 676 = X ^ 2

√ (20.25 + 676) = X

√696.25 = X

26.38 = X

26.3865 x 2 + 9 = X

52.77 + 9 = X

61.77 = X

Therefore, the triangle's perimeter is 61.77 inches.