Calculator What is the value of a?

Mathematics

2 answers:

Andrews [41]2 years ago

5 0

Answer:

Step-by-step explanation:

20^2 + x^2 = 25^2

= 400 + x^2 = 625

= x^2 = 225

= x = 15

Ede4ka [16]2 years ago

5 0

Answer:

Step-by-step explanation:

20^2 + x^2 = 25^2

= 400 + x^2 = 625

= x^2 = 225

= x = 15

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20 is 60% of what number

Oxana [17]

33.33? im not sure, but you do a/b=p/100. p is the percent, a is the part of the whole number, b. so the equation would be 20/b=60/100. then you do cross multiplication (60b=2000) then you divide.

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3 years ago

Find the perimeter of the polygon. Assume that lines which appear to be tangent are tangent. Round to the nearest tenth if neces

kherson [118]

Answer:

$P=53.6\ units$

Step-by-step explanation:

we know that

The <u><em>Two-Tangent Theore</em></u>m states that if two tangent segments are drawn to one circle from the same external point, then they are congruent

Applying the Two-Tangent Theorem at each vertex of the triangle

The perimeter of the triangle is equal to

$P=2(7.8)+2(8)+2(11)=53.6\ units$