Answer:
60 degrees Fahrenheit
Step-by-step explanation:
The formula you would need to use:
(20°C × 9/5) + 32 = 68°F
<h3>1.</h3>
The picture shows 5 groups of 3 bars. Each bar represents 1/10. We take the picture to mean that ...
... (15/10) / 5 = 3/10
In decimal:
... 1.5 / 5 = 0.3
<h3>2.</h3>
The picture shows 3 groups of 2 bars. Each bar represents 1/10. We take the picture to mean that ...
... (6/10) / 3 = 2/10
In decimal:
... 0.6 / 3 = 0.2
<h3>3.</h3>
The picture shows 4 groups, each consisting of 1 large square, 1 bar, and 4 small squares. We take the picture to mean that ...
... (4 + 4/10 + 16/100) / 4 = 1 + 1/10 + 4/100
In decimal:
... 4.56 / 4 = 1.14
Please note that 16/100 is equivalent to 1/10 + 6/100. In order to do the division, one of the 1/10 bars needed to be changed into 10 small squares, 10/100.
<h3>4.</h3>
The picture shows 3 groups, each consisting of 1 large square, 3 bars, and 2 small squares. We take the picture to mean that ...
... (3 + 9/10 +6/100) / 3 = 1 +3/10 + 2/100
In decimal:
... 3.96 / 3 = 1.32
Vertical angles is an X but that's how you tell if they're vertical angles
If we write a line in the form
Then the coefficient m is the slope of the line.
Two lines and 
are:
- Parallel if
- Perpendicular if
The first line is already in the required form: 
. We deduce that its slope is 9.
Let's rewrite the second line in the required form:
So, its slope is -1/9.
9 and -1/9 are obviously not equal, so the lines are not parallel.
But their product is -1, which means that the lines are perpendicular.
This is incomprehensible, but I would be happy to help if you perhaps re-typed it :D
