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Doss [256]
4 years ago
10

You are a payroll clerk and process time cards. John worked 7 hours and 30 minutes on Monday, 5 hours on Tuesday, 6 hours and 20

minutes on Wednesday and was off on Thursday and Friday. How many hours did John work this week?
Mathematics
1 answer:
hram777 [196]4 years ago
4 0
Your specific question was how many " hours " did he work this week so,

Monday: 7 whole hours
Tuesday: 5 whole hours
Wednesday: 6 whole hours
Thurs.-Fri.: Was off.

So that makes 7+5+6=18 hours.

The 30 minutes from Monday & 20 minutes from Tuesday doesn't equal one whole hour so it doesn't count.
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A ball rolls down an inclined plane such that the distance (in centimeters) that it rolls in t seconds is given by s(t) = 2t^3 +
IRISSAK [1]
The ball's velocity will be represented by the derivative of its distance function:

s'(t)=6t^2+6t

Now find the times t for which this is equal to 30, i.e. solve

6t^2+6t=30\implies t^2+t-5=0

This has two solutions, t=-\dfrac{1\pm\sqrt{21}}2, but only one is positive and falls in the interval [0,3]. So the velocity reaches 30 cm/s when t=-\dfrac{1-\sqrt{21}}2\approx1.79.
3 0
3 years ago
Elaina is planning to save enough money to buy laptop computer. She needs $600. She already has $200 in her bank account. She is
Natali [406]

Answer: 200+40x=600

Step-by-step explanation:

200+40x=600

600-200=400

40x=400

40/40= 1 or x

400/ 40=10

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5 0
3 years ago
What's the negative reciprocal of 5? Question 12 options: A) 1∕5 B) –5 C) –1∕5 D) 5
levacccp [35]

Answer:

\huge\boxed{C)\ -\dfrac{1}{5}}

Step-by-step explanation:

The reciprocal of 5: \dfrac{1}{5}

The negative reciprocal of 5: -\dfrac{1}{5}

7 0
2 years ago
14 is the same as ?i need help
Basile [38]
Same as 7*2=14 explain more what u need
4 0
3 years ago
Please help
Alenkasestr [34]

Answer:

Domain: {-4, -2, 1, 2, 4}

Range: {-4, -2, -1, 1, 4}

The relation is a function.

Step-by-step explanation:

A <u>relation</u> is any set of ordered pairs, which can be thought of as (input, output).

A function is a <em>relation</em> in which no two ordered pairs have the same first component and different second components.

Remember that a function can only take on <u>one output for each input</u>. We cannot plug in a value and get out two values.

The Vertical Line Test allows us to know whether or not a graph is actually a function.  If a vertical line intersects the graph in all places <u><em>at exactly one point</em></u>, then the relation is a function.

I did the Vertical Line Test on your given graph. As you can see from the attached screenshot, each vertical line crosses the graph only once. Therefore, the given relation is a function.

The <u><em>domain</em></u> of the given relation is the set of x-values, while the <em><u>range</u></em> is the set of y-values. You'll have to list the ordered pairs in order to determine the domain and range of the given relation.

Relation:  {(-4, -1), (-2, 1), (1, -2), (2, 4), (4, -4)}.

Domain: {-4, -2, 1, 2, 4}

Range: {-4, -2, -1, 1, 4}

Please mark my answers as the Brainliest if you find my explanations helpful :)

4 0
3 years ago
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