Eighteen is twice the amount 9.
18/2=9
2*9=18
Answer:
b = 2x²
Step-by-step explanation:
Let the number of bacteria = x
Every hour, the number of bacteria doubles itself, = x * x = x²
But the bacteria started with 2g,
The number of bacteria present is equal to
2 * x² = 2x².
At every hour, the growth of the bacteria is at 2x²
Answer:
Pendiente:
1
Intersección en el eje y:
0
x
y
0
0
1
1
Step-by-step explanation:
The evaluation of the following expressions with groupings are:
<h3>Algebra</h3>
8+ (9-3)
= 8 + (6)
= 14
(8+9)-3
= 17 - 3
= 14
14(10 ÷ 2)
= 14 (5)
= 70
(12-3) - (9.2)
= 9 - 9.2
= -0.2
(4-10) + (75 ÷ 25)
= -6 + (3)
= -6 + 3
= -3
80-3
= 77
8+3
= 11
13+ [2(9- 6)]
= 13 + {2(3)}
= 13 + (6)
= 19
Learn more about algebra:
brainly.com/question/4344214
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20% = .20
$80 x .2 = $16
$80-$16 = $64
Therefore, if the original price is $80 and a 20% off coupon is used, Tonya will save $16 and will only have to pay $64.