Answer:
m ≥ 1229
Step-by-step explanation:
Use m for the number of minutes
30 + 0.05×m ≥ 91.45
0.05*m ≥ 91.45-30
0.05*m ≥ 61.45
m ≥ 1229
Since you are given a list of choices, you can go through each choice to plug them into the equations. It turns out that choice B is the answer
(3,1) means that a = 3 and b = 1
Plug in a = 3 and b = 1 into the first equation
2a - 5b = 1
2*3 - 5*1 = 1.... replace 'a' with 3, replace b with 1
6 - 5 = 1
1 = 1
we get a true equation, so we have confirmed the first equation
Do the same for the second equation
3a+5b = 14
3*3+5*1 = 14 .... replace 'a' with 3, replace b with 1
9+5 = 14
14 = 14
we get a true equation, so the second equation has been confirmed
Both equations are true when (a,b) = (3,1). So the answer (3,1) has been confirmed fully
5 x sqrt 2 + 3 sqrt 2. 15 sqrt 2 is the answer. You're welcome. ;)
2x+x+16 = 70 is the equation for their combined ages in 8 years. combine like terms to get 3x+16=70. subtract sixteen from both sides to get 3x=54. divide by three to get x = 18. so feeder is 18, and mary is 36.
Answer:
1/10
Step-by-step explanation:
So first we need to find the probability of the cards, there is 5 cards and one card needs to be chosen, so the probability is 1/5
Then we need to find the probability of the dice, there is 3 even numbers in 1,2,3,4,5,and 6, so the probablity is 3/6 which is also equal to 1/2
Finaly we need to multiply 1/5 with 1/2, which is 1/10