3 years ago

What percent of 25 is 21?

Mathematics

2 answers:

Damm [24]3 years ago

8 0

21 IS 84% OF 25!!!!!

matrenka [14]3 years ago

3 0

The answer is 84.00%

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Round to the nearest tenth.

laila [671]

Answer:

8.2 units

Step-by-step explanation:

Given that the only information for our triangle are 2 sides and 1 angle, we must use the Law of Cosines to find side BC

Recall the Law of Cosines

$a^2=b^2+c^2-2bc\cdot cos(A)$

Identify angles and sides

$m\angle A=23^\circ\\a=BC=?\\b=AC=14\\c=AB=6$

Solve for side "a"

$a^2=b^2+c^2-2bc\cdot cos(A)\\\\a^2=14^2+6^2-2(14)(6)\cdot cos(23^\circ)\\\\a^2=196+36-168cos(23^\circ)\\\\a^2=222-168cos(23^\circ)\\\\a=\sqrt{222-168cos(23^\circ)}\\ \\a\approx8.2$

Therefore, the length of line segment BC is about 8.2 units

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2 years ago

(½ point for model; ½ point for correct simplified expression) (8x + 2) + (-9x + 7)

Alexxx [7]

Answer:

Simplified= −x+9

Step-by-step explanation:

5 0

3 years ago

Please help me out!!!!!

daser333 [38]

Answer:

From the figure, we´ll use the ratio of sin74

sin74=x/16

x=16/sin74

x=16.64

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3 years ago

4 x 105 in standard notation

Paul [167]

Answer:

Lol its 420

Step-by-step explanation:

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3 years ago

Goldbach''s Conjecture is a famous conjecture that has never been proven true or false. The conjecture states that every even nu

zhannawk [14.2K]

Has been proven TRUE.... hope it helps buddy have a great day hope you pass

5 0

3 years ago

Read 2 more answers