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oksano4ka [1.4K]
2 years ago
5

*will give brainliest*

Mathematics
2 answers:
dimaraw [331]2 years ago
6 0

Answer:

36450

Step-by-step explanation:

4.5 hours in minutes = 270

Every 45 minutes, bacteria triples

You start with 50

Divide 270 (total time) by 45 (every time bacteria triples)

270/45 = 6

50 * (3^6)

3^6 = 729

50 * 729

36,450 bacteria

stellarik [79]2 years ago
3 0
Ur answer is B. 36,450
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True or false: “If a positive integer is divisible by both 2 and 3, then it is divisible by 12.”
Julli [10]
False because 6 is divisible by 2 and 3, but not 12
4 0
2 years ago
Given the right triangle below what is x?
lions [1.4K]

Answer:

B 10.8 or

A 9.2 depending on what side of the triangle is "x".

Step-by-step explanation:

we cannot see the triangle and which side is which. you forgot to show us the picture (or describe it in more detail).

but I assume that "x" would be the Hypotenuse (the baseline of the right triangle, the side opposite of the 90 degree angle).

then by using Pythagoras

c² = a² + b²

=>

x² = 10² + 4² = 116

x = sqrt(116) = 10.8

but if x is any of the other sides (and not the Hypotenuse), then you need to adapt the calculation.

for example, if the Hypotenuse is the side with 10, then Pythagoras' formula would look like this

10² = x² + 4²

x² = 10² - 4² = 84

x = sqrt(84) = 9.2 (and answer A would be correct).

or if the Hypotenuse is the side with 4, then

4² = x² + 10²

x² = 4² - 10² = -84

x = sqrt(-84)

and that did not make any sense for real distances. so, this configuration is actually impossible for a right triangle.

5 0
3 years ago
Evaluate the expression 4-2x2+3
lutik1710 [3]

Answer:3

Step-by-step explanation:

8 0
3 years ago
Why is 8.8 classified as a rational number?
hichkok12 [17]
A rational number can be expressed as the ratio of two integers.

\frac{a}{b}

Where a and b are integers and b is not equal to 0.

The rational number 8.8 can be expressed as two integers. Like \frac{8.8}{1}
4 0
2 years ago
What is the equation, in slope-intercept form, of the line that is perpendicular to the line y – 4 = –2/3(x – 6) and passes thro
Kaylis [27]
Lets write the given equation in the y = mx + c form 
y - 4 = -2/3(x-6)
y - 4 = -2/3x + 4
y = -2/3x + 8
therefore the slope is -2/3 and intercept is +8
the perpendicular line passes through x = -2 and y = -2
then if the given graph has a slope of -2/3 the line that is perpendicular to that should have the reciprocal of the gradient and should be in the opposite direction. So m = +3/2
lets substitute x,y and m values for the new perpendicular line
y =mx + c
-2 = 3/2 * -2 +c
-2 = -3 +c
c = -2 +3 
c = 1
Therefore the equation for the perpendicular line is 
y = 3/2x + 1

3 0
2 years ago
Read 2 more answers
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