Simplify the expression.
55−4⋅5+12

62.5.

Step-by-step explanation:

Given:

The expression to simplify is given as:

55 - 4.5 +12

We have to use PEMDAS method in order to simplify this.

P stands for parenthesis, E for exponents, M/D stands for Multiplication or Division and A/S stands for Addition or Subtraction.

P has the highest priority followed by E followed by M or D which ever comes first followed by A or S which ever comes first.

Here, the first operation we encounter is subtraction S.

First, we will subtract 4.5 from 55. So, 55 - 4.5 = 50.5

Next operation is addition A.

Now, we will add the result to 12. So, 50.5 + 12 = 62.5

Therefore, the answer is 62.5.

The answer is 62.5.

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.