Answer:
<h2>-1/5</h2>
Step-by-step explanation:
Starting at -3/5 you need to subtract -2/5.
When you subtract a negative number, the sign flips and you add instead. Often, you are taught that two similar signs means add and two opposite signs mean minus.
<em>+ + = +</em>
<em>- - = -</em>
<em>+ - = -</em>
<em>- + = -</em>
<em />
This means -3/5 - -2/5 becomes -3/5 + 2/5.
Because you are adding, you move two lines to the right on the number line.
You end at -1/5.
10x ÷ 5 = 30
Step 1: To isolate 10x multiply 5 to both sides. Multiplication is the opposite of division and will cancel 5 on the left side and bring it over to the left
10x ÷ ( 5 × 5) = 30 × 5
10x ÷ 1 = 150
10x = 150
Step 2: To isolate x divide 10 to both sides. This will cancel 10 from the left side and bring it over to the right
10x/10 = 150/10
x = 15
Check:
10 (15) ÷ 5 = 30
150 ÷ 5 = 30
30 = 30 --------------------------------------------------> Correct!
x = 15
Hope this helped!
Step-by-step explanation:
sec X = WX/XY = 37/12 = 3 1/12
or 3.083
Answer:
36 degree
Step-by-step explanation:
Hope this helps.
Factoring - I always found this to be easy (one of the few things in math that I felt was easy!)
x^2 + 20x + 100 = 36
First step is to get the right side to zero. Do this by subtracting 36.
x^2 + 20x + 64 = 0
Now we have to factor the expression. We could use quadratic formula, completing the square, or use the product/sum rule if possible (which it is).
64's factors are:
1, 64
2, 32
4, 16
8, 8
We need the two factors that sum to 20...
(x + 4)(x + 16) = 0
Set each factor to zero
x + 4 = 0 and x + 16 = 0
Solve each equation
x = -4 and x = -16
You should always check for extraneous solutions. I recommend using desmos.com to check answers!