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Kisachek [45]
3 years ago
11

Dr. Green finds a note from another scientist. It says how many boxes of bug nets they should bring, but there is a smudge over

the first digit of the number. Dr. Green knows that they must bring 320 nets with them, and each box contains 4 nets. What is the missing digit of the number in the note?
Mathematics
2 answers:
Marizza181 [45]3 years ago
8 0

Answer:

The correct answer is the number in the note is 80 and the first digit is 8.

Step-by-step explanation:

Dr. Green finds a note from another scientist. It says how many boxes of bug nets they should bring, but there is a smudge over the first digit of the number.

Number of nets that they must bring is 320.

Each box contains 4 nets.

There number of boxes necessary to be brought is given by \frac{320}{4} = 80.

Therefore the missing digit of number the number in the note is 8.

jasenka [17]3 years ago
3 0

Answer:

sorry i could not help      

When did the Indian class system begin to change?

A)    in the Hindu period

B)    in the Vedic period

C)    in the Aryan period

D)    when people first settled the Indus River Valley

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Step-by-step explanation:

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A jar has 16 marbles, 10 green, 2 blue, 4 red. what is the probability of randomly choosing a red marble then without putting it
marta [7]

The probability of drawing a red marble and then a green marble is:

P = 1/6.

<h3>How to find the probability?</h3>

In the jar we have a total of 16 marbles, such that:

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  • 2 are blue
  • 4 are red.

First, the probability of getting a red marble is give by the quotient between the number of red marbles and the total number of marbles:

p = 4/16 = 1/4

Now we need to draw a green one, the probability is computed in the same way, but this time there are 15 marbles, because we already took one.

q = 10/15

The joint probability (first drawing red, then green) is given by the product between the individual probabilities:

P = p*q = (1/4)*(10/15) = 10/60 = 1/6

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8 0
2 years ago
If (3a + 3b + 1) (3a + 3b - 1) = 80, then a + b =
seropon [69]

Answer:

a+b = 4\sqrt{3}

Step-by-step explanation:

3(a + b)^2 = 81

(a + b)^2 = 27

a + b = sq rt 27

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8 0
3 years ago
The bottom and top of a box are rectangles twice as long as they are wide. Find the volume of the box if it is four feet high an
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Let x = the width

then

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The positive solution is what we want here:

x = 5 ft is the width

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2(5) = 10 ft is the length

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Find the volume

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5 0
3 years ago
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