Answer:
11
Step-by-step explanation:
5(2+4)-(2+3^3)
=5(8)-(2+27)
=40-29
=11
Answer:
green
Step-by-step explanation:
Answer:
b2-4ac , ans is negative . Should have no real roots .
Answer:
$8.00
Step-by-step explanation:
Since it says estimate we are rounding. I'm assuming tot he nearest dollar.
$4.95 rounds to $5.00
$1.85 rounds to $2.00
$1.05 rounds to $1.00
Then add these up to see the total estimated cost. $8.00
0.19 for one cookie and 0.59 for one doughnut
x for how much one cookie costs and y for how much one doughnut costs
6x+4y=3.5
12x+5y=5.23
solve by substitution: (elimination would work too)
4y=3.5-6x
y=0.875-1.5x
12x+5(0.875-1.5x)=5.23
12x+4.375x-7.5x=5.23
4.5x=0.855
x=0.19
now use x to solve for y:
6(0.19)+4y=3.5
1.14+4y=3.5
2.36=4y
y=0.59
Check the work: 6(0.19)+4(0.59)=3.5
