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ale4655 [162]
3 years ago
7

Simplify the expression: - 4t+ - 7t+3–10t

Mathematics
1 answer:
Gekata [30.6K]3 years ago
8 0

Answer:t+3

Step-by-step explanation:

4t+7t+3-10t

11t+3-10t

t+3

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Pls help 25 points and brainliest.
puteri [66]

This is an equation that calculates potential energy and converts the value into its commercial unit.

<u>Step-by-step explanation:</u>

Step 1:

Given equation is 2 kg × 9.81 m/s² × 40 m. From the units, find the corresponding measurements. kg is the unit of mass (m), 9.81 m/s² is the acceleration due to gravity (g) and m is the unit of length or height (h).

This shows that this equation is to find potential energy. It is then converted into the commercial unit of energy (Joules).

⇒ Potential Energy = mgh = 2 kg × 9.81 m/s² × 40 m

                                            = 784.8 kg m²/s²

                                            = 784.8 N-m (Since unit of force, 1 N=kg m/s²)

                                            = 784.8 J (1 Newton-m = 1 Joule)

     

3 0
3 years ago
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djverab [1.8K]

Answer:

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2 years ago
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A random sample of 40 college students has a mean earnings of​ $3120 over the summer months. Assume the population standard devi
PSYCHO15rus [73]

Answer:

A normal distribution or z-test is used to construct a confidence interval.

Step-by-step explanation:

We are given the following in the question:

Sample mean, \bar{x} = $3120

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Population standard deviation, σ = $677

The distribution of earnings of college is a normal distribution.

Conditions:

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Conclusion:

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Answer:

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Step-by-step explanation:

Given is a figure of cyclic quadrilateral.

Opposite angles of a cyclic quadrilateral are supplementary.

Therefore,

z° + 93° = 180°

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sergeinik [125]

Answer:

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Step-by-step explanation:

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