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Llana [10]
3 years ago
10

The length of a DNA nucleotide building block is about 1 nanometer, or 0.000000001 meters. Fill in the blank to write this numbe

r in scientific notation.
Mathematics
1 answer:
Dominik [7]3 years ago
4 0

Answer:

4

Step-by-step explanation:

The length of a DNA nucleotide building block is about 1 nanometer, or 0.000000001 meters.  Fill in the blank to write this number in scientific notation.

×10−9

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If 225 widgets were produced in 2.2 hours what is the hourly production rate
quester [9]

Answer: The hourly production rate is about 102.3 widgets per hour

Step-by-step explanation:

1.) divide 225 by 2.2, which gives you 102.2727

2.) round to the nearest tenth

5 0
3 years ago
The graph shows the rate at which the depth of the water in a pond is changing over time. On a coordinate plane, a graph titled
GREYUIT [131]

Answer:

Step-by-step explanation:

The key to solving this question is to find the distance bwtween the two points given

distance=y2-y1/x2-x1

(2,4)(4,8)

2=x1,4=y1

4=x2

8=y2

8-4/4-2

4/2=2

The depth of the water is increasing by 2 ft each minute

8 0
3 years ago
There are 68 apples in the school kitchen. The school needs 130 apples for all the students in grade 2. The school gets two boxe
WITCHER [35]

Answer:No they do not have enough they only have 82 apples

Step-by-step explanation:

7 0
3 years ago
Lucas plants 20% of his garden with cucumber plants. The cucumber plants cover an area of 24m square. What is the total area of
enyata [817]

Answer:

<em>120m square.</em>

Step-by-step explanation:

If on average 20% of the garden is equal to 24m square, 24m * 4 = 80%, which is 96.

96msq + 24msq = 120msq

7 0
4 years ago
Part 1
svetlana [45]

Answer:

A: This polynomial has a degree of 2 , so the equation 12x2+5x−2=0 has two or fewer roots.

B: The quadratic equation 12x2+5x−2=0 has two real solutions, x=−2/3 or x=1/4 , and therefore has two real roots.

Step-by-step explanation:

f(x) = 12x^2 + 5x - 2.

Since this is a quadratic equation, or a polynomial of second degree, one can easily conclude that this equation will have at most 2 roots. At most 2 roots mean that the function can have either 2 roots at maximum or less than 2 roots. Therefore, in the A category, 2nd option is the correct answer (This polynomial has a degree of 2 , so the equation 12x^2 + 5x − 2 = 0 has two or fewer roots).

To find the roots of f(x), set f(x) = 0. Therefore:

12x^2 + 5x - 2 = 0. Solving the question using the mid term breaking method shows that 12*2=24. The factors of 24 whose difference is 5 are 8 and 3. Therefore:

12x^2 + 8x - 3x - 2 = 0.

4x(3x + 2) -1(3x+2) = 0.

(4x-1)(3x+2) = 0.

4x-1 = 0 or 3x+2 = 0.

x = 1/4 or x = -2/3.

It can be seen that f(x) has two distinct real roots. Therefore, in the B category, 1st Option is the correct answer (The quadratic equation 12x2+5x−2=0 has two real solutions, x=−2/3 or x=1/4 , and therefore has two real roots)!!!

8 0
3 years ago
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