Can I get an explanation for this ?

Which sums are equal to 1hold 6/8? choose all answers that are correcta.1/8+6/8b.12/8+2/8c.8/8+1/8+1/8+1/8+1/8+1/8+1/8d.8/8+6/8

Marking brainliest for original answer.. are these two triangles similar? how can you tell?

When adding 43.8 to a certain number, the sum is 46.59, as seen below. what number should go in the box to complete the addition problem? the decimal 43.8 is added to an unknown whole number and 79 hundredths to equal 46.59. numerical answers expected! answer for blank 1: