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IrinaVladis [17]
2 years ago
10

Which expression is equivalent to the expression below? 4 x 2/3 A.

Mathematics
1 answer:
Tema [17]2 years ago
8 0
Bro just go on Symbolab and use the calculator
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A culture started with 4,000 bacteria. After 2 hours it grew to 4400 bacteria. Predict how many bacteria will be present after 1
Art [367]
 <span>idk why they want the dratted "k" . it is so simple w/o it ! 
in the form y = ab^x, a = 4000, b = 4400/4000 = 1.1, x = t/2 
N = 4000*1.1^(13/2) = 7432 <------ 
----------------- 
now you won't be satisfied with simplicity, so 
4400 = 4000e^2k 
e^2k = 1.1 
k = ln 1.1/2 = .0477 to 4 dp 
N(13) = 4000e^(13*.0477) = 7436 <------ 

note that apart from a roundabout way, you get a less accurate ans !</span>
5 0
3 years ago
Read 2 more answers
Solve for c : <br> 6/13=3/c
nexus9112 [7]
Cross mutiply and the answer would be 13/2 or 6.5
7 0
3 years ago
6x-12=2x-6 <br><br> Also,how do you check your answer?
taurus [48]
6x-12 = 2x-6

get like terms on the same side by adding/subtracting.

6x - 12 = 2x - 6
+ 12, -2x on both sides

6x - 2x = -6 + 12

4x = 6

divide all by 4

x = 1.5

to check your answer, plug in 1.5 for x and see if they are equal to one another.

6(1.5) - 12 = -3
2(1.5) - 6 = -3
7 0
3 years ago
Write the equation of a circle with center (4,5) and a Circumference = 16 pi
3241004551 [841]

Answer:

The required equation in standard form is (x-4)^2+(y-5)^2=64

Step-by-step explanation:

The equation of a circle with center (h,k) an radius, r units is given by the formula;

(x-h)^2+(y-k)^2=r^2

The given circle has center (4,5) and the radius can be calculated from the given circumference, which is C=16\pi

2\pi r=16\pi

\implies r=8

We substitute these values into the formula to obtain;

(x-4)^2+(y-5)^2=8^2

We simplify to get;

(x-4)^2+(y-5)^2=64

8 0
3 years ago
Read 2 more answers
A boy sent a telegram which contains 36 words to his mother if the first 12 words cost $20 and each additional word cost 2$ per
aliina [53]

Answer:

(d) 60 kobo

Step-by-step explanation:

36 divided by 12 = 3

3 x 20 = 60

Hope this helps!

4 0
3 years ago
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