Two consecutive odd number have the form: 2n+1; 2n+3.
We have:
(2n+1)(2n+3)=399
=> 4x^2+8x+3=399
=> 4x^2+8x-396=0
=> 4(x+11)(x-9)=0
=> x=-11; x=9
Answer:
Step-by-step explanation:
<u>There are total cadies in the bag:</u>
<u>Probability of pulling a coffee candy is:</u>
So each 5th candy should be coffee candy
<u>Then you need to pull at least:</u>
<em><u>Note:</u></em>
<em><u>To ensure 3 coffee candies you would need to pull 25 - 2 = 23 candies</u></em>
I have the answer attached.
Answer:
$82 sundaes
$74 banana split
Step-by-step explanation:
Step one :
Given data
Cost of sundaes =$2 each
Cost of banana split =$3 each
Let the number of sundaes bought be x
And the number of banana split bought be y
The total is x+y
The shop sold 8 more Sundaes than the Banana split
x=8+y—-------1
Total amount made = $156
Therefore the system of equation for the situation is
x=8+y----—----------1
2x+3y=156---------2
But x=8+y
8+y+y=156
8+2y=156
2y=156-8
2y=148
Divide both sides by 2
y=148/2
y=74
On That day they sold $74 banana split
And also they sold x=8+74=$82 sundaes
70 you solve by making a proportion 2.8/x =4/100
