Since percents are out of 100 (69/100), you can change them to a ratio which in this case would be 69:100 because it can't be simplified.
Answer:
The sister is 10 and Mike is 20
Step-by-step explanation:
10 x 2 = 20
10 +20 = 30
Answer:
5/25
Step-by-step explanation:
Probability would be that you randomly select 5 cards so the selection goes above the fraction and the total amout of cards goes below.
By formula of surface area of cube
Answer:
7 ( x + 3 )
Step-by-step explanation:
Use order of operations to multiply first.
3+2x2 +7 x + 14
3+4 +7 x + 14
Now group like terms.
3+ 7x + 4 + 14
Add like terms
7x + 21
Find the two multiples of 21.
7x + 7 x 3
Now factor out the 7.
7( x + 3 )
