Answer:
r = 8
Step-by-step explanation:
<u>→Distribute the 7 to (-3r + 16):</u>
-16r + 15 + 17 = 7(-3r + 16) - 5r
-16r + 15 + 17 = -21r + 112 - 5r
<u>→Add like terms:</u>
-16r + 32 = -26r + 112
<u>→Add 26r to both sides:</u>
10r + 32 = 112
<u>→Subtract 32 from both sides:</u>
10r = 80
<u>→Divide both sides by 10:</u>
r = 8
Answer:
There are 56 stuffed animals and 28 mystery boxes in the claw arcade machine
Step-by-step explanation:
Firstly, we assign variables.
Let the number of stuffed animals be x and the number of mystery boxes be y
The probability of selecting a stuffed animal is x/84 while the probability is selecting a mystery box is y/84
Now, since the total probability can be 1:
This means that
x/84 + y/84 = 1 •••••••(i)
Now from the question, we were told that the probability of selecting or winning a stuffed animal is twice that of winning a mystery box
Thus x/84 = 2 * y/84
X/84 = y/42
Let’s substitute this into equation 1
y/42 + y/84 = 1
(2y+ y)/84 = 1
3y/84 = 1
3y = 84
y = 84/3
y = 28
Since x + y = 84
x = 84 - y
x = 84-28 = 56
You have to be specific on what you're trying to ask. What subject is this in?
9b+63 = 72
9b = 9 (subtract 63 from both sides)
b = 1 (divide both sides by 9)
Answer:
<h2><em><u>
21.30 dollars</u></em></h2><h2><em><u>
is the answer</u></em></h2>
Step-by-step explanation:
Total money/ number of people
63.90/3 = 21.30
If you divide by 3 then the 3 friends will get the equal amount of money.
