<span>3[2(6 + 4)-8]+8÷2
Inner most bracket (6 + 4):
= </span><span>3[2(10)-8]+8÷2
Multiplication within the bracket (2(10)):
</span>= 3[20-8]+8÷2
Bracket (20 - 8):
= 3[12]+8÷2
Multiplication (3(12)):
= 36+8÷2
Division (8÷2):
= 36+4
Add (36 + 4):
=40
Answer: 40
Answer:
Step-by-step explanation:2+2=4
30)
a)
We have to calculate the highest common factor (HCF) of 21 and 36.
21=3*7
36=2² * 3²
HCF (21,36)=3.
Therefore: the length of the side of the largest pieces into which Juanita and Samuel can cut the pizza must be 3 inches.
Answer:3 inches.
b)
Area (pizza)=21 in * 36 in=756 in²
Area (0ne piece of pizza)=3 in * 3 in=9 in².
number of pieces of pizza=Area pizza / area of one piece of pizza.
number of pieces of pizzas=756 in²/ 9 (in²/piece)=84 pieces.
answer=84 pieces.
31)
x=number
-x=opposite of number "x"
The opposite of a number sometimes will be greater than the number itself.
if we have a negative number, the opposite of this number will be greater than the negative number.
Example:
x=-10
the opposite of -10 is 10
therefore: 10>-10
If we have a positive number, the opposite of this number will not be greater than the positive number.
Example:
x=10
the opposite of 10 is -10
Therefore: -10<10
You have to write two equation:
'substract 22 from a number'
and:
'the result is doubled, the answer is 6 more than the original number'
then you change 'Y' in 2nd equation for left side of 1st equation:
count it and you get:
This means that X=50
The original number is 50.
