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marusya05 [52]
3 years ago
10

Please help me in this!!!

Mathematics
1 answer:
Gemiola [76]3 years ago
3 0

Answer:

It's the third one. Both the above statements are true.

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Will give the brainliest!!!
DaniilM [7]

the answer should be 320.4

8 0
3 years ago
Read 2 more answers
Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work​ together, it takes them 2 hours. How
aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood  = K hrs

So, the per hour rate of Dwight  = (\frac{1}{K})

As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood  = (K- 3) hrs

So, the per hour rate of Joe  = (\frac{1}{K-3})

Now, when both of them wok together, it takes them 2 hours.

So, the per hour rate of BOTH of them  = (\frac{1}{2})

⇒ Per hour rate of ( Dwight  + Joe)  =(\frac{1}{2} )

\implies (\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})

Now, solving for the value of K , we get:

(\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})\\\implies  \frac{(K-3) + K}{K (K-3)}  = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K  + 6=  0\\\implies K^2 - 6K - K  + 6=  0\\\implies K(K-6) -1(K - 6)=  0\\\implies (K-6)(K-1) = 0

Implies either K = 6 Or K = 1

But if K = 1, (K-3)  = 1- 3  = -2 hours would be A CONTRADICTION.

⇒ K  = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

8 0
3 years ago
Question 13<br> If the nth term of a sequence is<br> 6n + 4 what is the 9th term?
GarryVolchara [31]

Answer:

Step-by-step explanation:

hello :

the 9th term when : n=9

6(9) + 4 =58

4 0
3 years ago
Roberto decided to get rid of all of his baseball cards, so he gave his four friends 32 baseball cards each. How many baseball c
belka [17]
X=4
32x + 0= 128

He had 128 baseball cards

8 0
3 years ago
Please simplify.
irina [24]

Answer:

B) 1/4c^4

Step-by-step explanation:

Because 3/12=1/4 and c^8/c^12=1/c^4.

5 0
3 years ago
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