3 years ago

What is the GCFof 100 and 20 to

Mathematics

2 answers:

garri49 [273]3 years ago

8 0

The answer is 20. GCF=20

snow_lady [41]3 years ago

6 0

20 because t can go into both and is the highest number that goes into 20 and 100

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What is the area of the regular pentagon below?

wolverine [178]

Answer:

21yd^2

Step-by-step explanation:

join the centre to all the vertex,

since this figure is of regular pentagon, it's will form 5 equal triangle of equal area!

now area of one such triangle is

1/2 ×base ×height

=1/2 ×3.5x2.4 (yd^2)

=4.2 yd^2

now the pentagon is sum of 5 such equal triangle,so it's are will be

5×4.2 (yd^2)

=21 yd^2

✌️:)

7 0

3 years ago

Please help me get the right answer?!

Aleksandr-060686 [28]

The answer is A, $\frac{1}{81}$ . This is because when plugging in -2 for x, the expression will look like this: $9^{-2}$ . To make the exponent positive, you have to flip it into a fraction. Then it will be $\frac{1}{9^2}$ . Lastly, you simplify the denominator into 81.