Jeff worked 4 2/3 hours in the morning and 3 3/4 hours in the afternoon. How many total hours did he work today?7 5/7 hours
7 5/12 hours
8 5/12 hours
8 1/2 hours

Answers

Answer 1

Answer:

Answer:If you would like to know how many total hours did Jeff work today, you can calculate this using the following steps:

4 2/3 hours in the morning + 3 3/4 hours in the afternoon = 4 2/3 + 3 3/4 = 14/3 + 15/4 = 56/12 + 45/12 = (56 + 45) / 12 = 101/12 = 8 5/12 hours

Jeff worked 8 5/12 hours in total.

Step-by-step explanation:

Answer 2

Answer: 8 1/2 hours
Just use a calculator

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Mack designed a water fountain with a square pyramid flowing into a cube. The edges of the bases of the pyramid and the cube have the same length and the heights of the pyramid and the cube are the same. Describe the relationship between the volume of the cube and the volume of the pyramid.

Please help me on this question. There are six questions in total and I did the rest (finding the volume/surface area) but this one I just don't understand. I'm willing to give up 60 of the 70 points I have for help (help that tells me the answer and explains it). Maybe even all 70. Please help if you understand. Thank you, minna.

Answers

volume of pyramid = 1/3 b2h
volume of cube = b3

now , provided pyramid and cube have same edges and same heights.

thus, volume of pyramid = 1/3 b3
volume of cube = b3.

thus, ratio = 1/3b3/ b3 = 1/3.

Thus, volume of pyramid = 1/3volume of cube

$V_(cube)=a^3\ \ \ and\ \ \ V_(pyramid)= (1)/(3) \cdot a^2\cdot h=(1)/(3)a^3\n \n (V_(pyramid))/(V_(cube)) = ((1)/(3)a^3)/(a^3)= (1)/(3)\n \n \nA_(cube)=6a^2\n \nh^2=a^2+( (1)/(2) a)^2\ \ \ \Rightarrow\ \ \ h^2= (5a^2)/(4)\ \ \ \Rightarrow\ \ \ h= (a √(5) )/(2)\n\nA_(pyramid)=a^2+4\cdot (1)/(2)ah=a^2+2a\cdot (a √(5) )/(2) =a^2(1+ √(5)) \n \n (A_(pyramid))/(A_(cube))= (a^2(1+ √(5)) )/(6a^2) = (1+ √(5))/(6)$

The cost of 2 tv and 3 DVD player is $1421. The cost of 1 dvd is half of the tv. What's the cost of the tv

Answers

The cost of one tv is double than cost of one DVD;

The cost of 2 tv is 4 times more cost one DVD ;

The cost of 2 tv and 3 DVD player is 7 times more cost one DVD ;Then, 1 DVD cost 1421 ÷7 = 201 $ ;
1 tv cost = 2 * 201 = 402 $ ;

Final answer:

To solve the problem, you set up two equations based on the information given. Then, you substitute one equation into the other to solve for the cost of the TV, which comes out to be approximately $405.43.

Explanation:

To answer this question, you need to use algebra. We can create two equations based on the information given. Let's say the cost of a TV is x and the cost of a DVD player is y. According to the problem, we have two equations:

2x + 3y = $1421 (This comes from the total cost of the 2 TVs and 3 DVD players)
y = 0.5x (This comes from the fact that the cost of a DVD player is half the cost of a TV)

We can then substitute the second equation into the first to get:

2x + 3(0.5x) = $1421
2x + 1.5x = $1421
3.5x = $1421

To find the cost of the TV 'x', you can divide both sides of the last equation by 3.5 resulting in x = $405.43. So the cost of one TV is approximately $405.43.

Learn more about Algebra here:

brainly.com/question/24875240

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Is y=2x-5 a function?

Answers

Yes it is.
It says ...
   "Whatever number anybody drops into the funnel on top,
   double the number, then subtract 5, then turn the crank
   and drop the result out the bottom."

Elaine bought 3 4/5 pounds of apples for $1.99 per pound, 3/4 pound of pears for $2.25 per pound, and 3 2/3 pounds bananas for $1.75 per pound.1. What did Elanie spend on bananas
2. What did Elanie spend on pears
3.What did Elaine spend on Apples?

Answers

Answer:

1.$6.41

2.$1.68

3.$7.56

Step-by-step explanation:

1. 6.41
2. 1.68 sbbehs

How sides does a hexagon have

Answers

A hexagon has 6 total sides.

A hexagon has 6 sides. You can remember this because the prefix "Hexa" means "6", such as in the word "Hexarchy"- an alliance between 6 individual civilizations, such as states or countries. : )

Which product is negative? A.

–3 • 5 • (–6) • 4

B.

–7 • (–3) • (–9) • 0

C.

–4 • (–6) • (–3) • (–5)

D.

–3 • 4 • (–2) • (–7)

Answers

Negative times a Negative = Positive
Positive times a Positive = Positive
Negative times a Positive = Negative
Positive times a Negative = Negative

Option A:

Negative * Positive * Negative * Positive

Negative * Negative * Positive

Positive * Positive

Positive

Option B:

Anything times 0 is 0, this is incorrect.

Option C:

Negative * Negative * Negative * Negative

Positive * Negative * Negative

Negative * Negative

Positive

Option D:

Negative * Positive * Negative * Negative

Negative * Negative * Negative

Positive * Negative

Negative

Therefore your answer is D.

the answer is d-( -168)

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