Well range is the difference between the highest and lowest numbers so 20-7 is 13
Answer: 70ᴼ
Step-by-step explanation:
The triangles are vertical so their angle measures are congruent.
The angles of a triangle add to equal 180ᴼ.
55 + 55 = 110
180 - 110 = 70
Answer:
(x-2)(x+1)
Step-by-step explanation:
Factor!
Answer:
Saturday.
Step-by-step explanation:
To answer the above question, we must recognise that Tuesday appears once every 7 days.
If today is Tuesday, 31 days ago will be obtained as follow:
31/7 = 4 remainder 3
Thus
31 = (7 × 4) + 3
31 = (28) + 3
Thus, the 28th day is Tuesday. If we count 3 days back from Tuesday, the day will be Saturday.
Therefore, the magician made his wife disappear on Saturday.
Answer:
D) 
Step-by-step explanation:
You have to use the laws of exponents to solve this:
Power of a Power: 
. In this case, 
, all of the numbers in the parenthesis need to be multiplied to the power of 3: 
.
Quotient of Powers: 
. In this case, 
, all of the exponents need to be subtracted (but the 4³ (64) and 8 need to be divided): 
.
Use the Power of a Power again for the expression at the right: 
. You get: 
. Keep the subtraction/negative sign where it is.
Together, you get: .
Hope it helps!
