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navik [9.2K]
4 years ago
9

r. Jimenez found that after applying an antibiotic to bacteria, he observed only 90% of the bacteria left in the culture dish ea

ch hour. If the initial bacteria count was 100, what was the bacteria count after 5 hours? Round to the nearest whole number.
Mathematics
1 answer:
Vaselesa [24]4 years ago
5 0
So we playing around with bacteria now huh? 50
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Your brother eats 1/6th of your birthday pizza. If the pizza has a diameter of 12 inches, what is the area that he ate
Kipish [7]

Answer:

18.84 in^2

Step-by-step explanation:

Area brother ate = 1/6 x area of pizza

a pizza is the shape of a circle. the area of a pizza is equal to the area of a circle

Area of a circle = πr²

r = 12/2 = 6

he diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

3.14 x 6^2 = 113.04

1/6 x 113.04 = 18.84

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3 years ago
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Answer:

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Step-by-step explanation:

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4 years ago
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Tomtit [17]

Answer:

x=30° y=110°

Step-by-step explanation:

80+70=150

180-150=30° 》》》》 angles in a triangle add up to 180°

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180-140=40° angles on a straight line add up to 180°

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3 years ago
12(r + t) - 6(r + t) + 4(r +t) - (r + t)
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Answer:

10r+10t

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Step-by-step explanation:

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zimovet [89]

Answer:

2x³ + 3(3x - 4)(x + 1)

Step-by-step explanation:

(2x³ + 7x² + x) + 2(x² - 2x - 6)

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