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garri49 [273]
3 years ago
7

Sanjay and Felipe are putting together a 500-piece puzzle. Sanjay could do the entire puzzle by himself in 6 hours, while it wou

ld take Felipe 8 hours to do the puzzle alone.
Use the table to write and solve an equation to determine the approximate amount of time it would take Sanjay and Felipe to do the puzzle if they were working together.

0.8 hours
1.7 hours
3.4 hours
7 hours
Mathematics
2 answers:
kicyunya [14]3 years ago
7 0
3.4 hours. The efficiency of a worker is the amount of work divided by time needed. The efficiency of Sanjay alone is 500/6, and the efficiency of Felipe alone is 500/8. When they work together, their combined efficiency is 500/6+500/8=3500/24. Therefore, they need 500/(3500/24)=24/7=3.4 hours.
Rina8888 [55]3 years ago
5 0
The answer would be

<span>3.4 hours
</span>
pls mark brainliest XD
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3 years ago
Write the equation of the graph
olchik [2.2K]

Answer:

y = 2.cos(x) - 2

Step-by-step explanation:

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y = a.cos(x) + b

2. find a and b by using two sample points from the graph: (0, 0) and (\pi, -4)

0 = a.cos(0) + b  => a + b = 0\\ -4 = a.cos(\pi) + b => b-a=-4\\\left \{ {{2b=-4} \atop {2a=4}} \right.\\a = 2, b=-2\\

5 0
3 years ago
Expanded form of 680,705
denis23 [38]

\huge\boxed{600,000 + 80,000 + 700 + 5}

To find expanded form, we need to split up the digits. When you do that, you take one digit and cut off everything to the left of it, then make everything to the right zeros.

600,000 + 80,000 + 0 + 700 + 0 + 5

We don't need to keep the zeros.

\boxed{600,000 + 80,000 + 700 + 5}

We can check this by adding the numbers back up to get 680,705.

680,000 + 700 + 5

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6 0
3 years ago
2/15 + 27/35 = what in reduced terms
solniwko [45]

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8 0
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A store sells packages of comic books with a poster. A poster and 5 comics cost ​$15.75 A poster and 11 comics cost ​$27.75 Writ
Vanyuwa [196]

Answer:

y=x+5.99

Step-by-step explanation:

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A poster and 11 comics cost ​$16.99.

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Let y be the cost of package and x be the no. of comics

We will use two point slope form :

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Substitute the values:

Hence a linear function rule that models the cost y of a package containing any number x of comic books is y=x+5.99

8 0
3 years ago
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