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aleksandr82 [10.1K]
3 years ago
8

Can you help me please?

Mathematics
1 answer:
Westkost [7]3 years ago
7 0

Answer:

C. 3

Step-by-step explanation:

In arithmetic, the range of a set of data is the difference between the largest and smallest values. However, in descriptive statistics, this concept of range has a more complex meaning. The range is the size of the smallest interval which contains all the data and provides an indication of statistical dispersion. It is measured in the same units as the data.

2 - (-1) = 3

6 - 3 = 3

etc...

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Match the terms to their correct definitions.
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5 0
2 years ago
-2x + 7 = -32 i need all the steps
iris [78.8K]

Answer:

x = 19.5

Step-by-step explanation:

-2x + 7 = -32           (subtract 7 on both sides)

      -7     -7

-2x = -39                  (Divide by -2)

x = 19.5

     

7 0
3 years ago
Read 2 more answers
Find the times (to the nearest hundredth of a second) that the weight is halfway to its maximum negative position over the inter
hoa [83]

Answer:

0.20 and 0.36

Step-by-step explanation:

y(t) = 2 sin (4π t) + 5 cos (4π t)

We wish to convert this to:

y = A sin(ωt + φ)

We know that ω = 4π.  We also know the following:

5 = A sin φ

2 = A cos φ

Divide the first equation by the second equation:

5/2 = tan φ

φ = tan⁻¹(5/2)

Now, square the two equations and add them together.

5² + 2² = (A sin φ)² + (A cos φ)²

29 = A²

A = √29

The equation of the wave is therefore:

y = √29 sin(4π t + tan⁻¹(5/2))

The maximum negative position is -√29.  And half of that is -½√29.

-½√29 = √29 sin(4π t + tan⁻¹(5/2))

-½ = sin(4π t + tan⁻¹(5/2))

7π/6 + 2kπ or 11π/6 + 2kπ = 4π t + tan⁻¹(5/2)

7 + 12k or 11 + 12k = 24t + 6 tan⁻¹(5/2) / π

t = (7 + 12k − 6 tan⁻¹(5/2) / π) / 24 or (11 + 12k − 6 tan⁻¹(5/2) / π) / 24

Trying different integer values of k, we find there are two possible values for t between 0 and 0.5, both when k = 0.

t = (7 − 6 tan⁻¹(5/2) / π) / 24 or (11 − 6 tan⁻¹(5/2) / π) / 24

t ≈ 0.20 or 0.36

5 0
3 years ago
Help me please don't know
dem82 [27]
1. 5 x 5
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3. 90 divided by 70
4. 40 divided by 5.
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8 0
3 years ago
Is 15º an acute angle, right angle, obtuse<br> angle, or straight angle?<br> flant role
White raven [17]

Answer:

acute angle

Step-by-step explanation:

right is 90 degrees

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so acute.

Brainliest appreciated

8 0
2 years ago
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