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lesya [120]
3 years ago
13

My son has the following missing number pattern to solve.

Mathematics
2 answers:
melisa1 [442]3 years ago
6 0
The only complete pattern is the middle one
we see that 38-29=9
so the middle number minus the first number equals the third number
for the last row
21-1=20  so you have 1  21   20
for the first one

17- ?=37
54-17=37      54  17  37 
alexandr402 [8]3 years ago
3 0
For the first one is 1,21,20

The second one is 54,17,37
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3 strain would still alive after 48 hours

Step-by-step explanation:

Initial population of virus = 40000 grams

A certain virus is dying off at a rate of 18% per hour.

We are supposed to find  how much of the  strain would still be alive after 48 hours

Formula : N(t)=N_0(1-r)^t

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r = rate of decrease = 18% = 0.18

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So,the  strain would still be alive after 48 hours=40000(1-0.18)^{48}=2.91 \sim 3

Hence 3 strain would still alive after 48 hours

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3 years ago
In the last draw, the grand prize was won. If there are three winners, each would have received $ 720,000; if there are four win
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3 years ago
If the radius of a half-circle is 11...
Xelga [282]
By giving just the radius and asking for the arc length of that circle your answer will be without math is 22
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2 years ago
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Oliga [24]
On the bottom left, the answer is subtraction property of equality because you need to subtract 4x to the 7x to simplify the equation.
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2 years ago
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Convert 2/4 to 1/2 which in decimal form, is .5.

You’re final answer is -2.3,-2 2/4,-2.6.

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7 0
2 years ago
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