Answer: Jamian bought 20 bagels and 15 donuts
Step-by-step explanation:
Using the equation below:
b + d = 35 ...... i
1.25b + 0.75d = 36.25 ....... ii
Multiply i by 1.25
Multiply ii by 1
1.25b + 1.25d = 43.75 ...... iii
1.25b + 0.75d = 36.25 ....... iv
Subtract iv from iii
0.50d = 7.50
d = 7.50 / 0.50
d = 15
Since b + d = 35
b = 35 - 15
b = 20
Jamian bought 20 bagels and 15 donuts
Answer: -1
Step-by-step explanation: plug in 25 into (-1)^n
Answer:
B
Step-by-step explanation:
Area of pool = l × b
l = 6x and b = 3x - 5
Area = 6x(3x - 5)
Area = 18x² - 30x
<h3>Answer:</h3>
B) 10 pounds
<h3>Explanation:</h3>
Let x represent the amount of 70¢ candy to be added. The value of the mixture can be written as ...
... 90×30 + 70x = 85×(30+x) . . . . . where 30+x is the total weight of the mix
... 2700 +70x = 2550 +85x
... 150 = 15x . . . . . . add -70x-2550
... 10 = x . . . . . . . . . divide by the coefficient of x
10 pounds of candy at 70¢/lb must be added.
