Write the corresponding fraction for each of the underlined digits.
a. 1277
b. 37
c. 243
d. 1156

a.

b.

c.

d

Step-by-step explanation:

To find the fraction of a decimal point we first need to write the decimal number as a fraction over 1.

Then we need to multiply top number and bottom number by where n represents the number of decimal places it moved to make it a whole number.

In this case we moved the decimal point 4 decimal places.

So that leaves us with .

Now let's do it with the rest:

b.

We moved it 2 decimal places.

c.

We moved it 3 decimal places.

d.

We moved it 4 decimal places.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.