Please Just two questions will 15 POINTS!!

Mathematics

1 answer:

Setler [38]4 years ago

8 0

1. B and D

2.A

I hope this helped, woof.

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Are 3 and 8 prime to each other

MAVERICK [17]

Remark

Yes even though 8 is not a prime number. There is nothing that will divide into 3 or 8 the will give a whole number answer when the division is complete.

That means that 3 and 8 are prime to each other in base 10.

3 0

3 years ago

Can someone please help me solve this?

ra1l [238]

AC is congruent to itself
AC bisects angle BAD, so that angles BAC and DAC are congruent
Both angles B and D are right angles, so they are congruent

This means triangles BAC and DAC are a pair of angle-angle-side triangles, so they are congruent to one another. Corresponding parts of congruent triangles are congruent, so the line segments BC and DC are congruent and have the same length.

Then

$8n+2=2n+20\implies6n=18\implies n=3$