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vova2212 [387]
2 years ago
6

Two machines, Y and Z, work at constant rates producing identical items. Machine Y produces 3 items in the same time Machine Z p

roduces 2 items. If machine Y takes 9 minutes to produce a batch of items, how many minutes does it take for machine Z to produce the same number of items?
A. 6
B. 9
C. 9 1/2
D. 12
E. 13 1/2
Mathematics
1 answer:
umka2103 [35]2 years ago
8 0

Answer:

E. 13 1/2

Step-by-step explanation:

As two machine Y and Z at constant rate is in 3/2 .So if a machine Y is working 3/2 then the rate of other machine Z is 2/3 time take. Y take 9 minutes.So, 9 = (2/3) the time

so T = 9 * 3 / 2

T = 13.5

So option E is true.  

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creativ13 [48]

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7 0
2 years ago
Bishwant and sunayana cimplete a oiece of a work in 6 days working together.if bishwant alime can complete it n 10 days.in how m
alina1380 [7]

Step-by-step explanation:

sunaina's alona work=

1/6-1/10

10-6/60

4/60

1/15

therefore sunaina can alone do the work in 15 days

4 0
3 years ago
6. Ed drives from Jefferson to Holden, a distance of 250 miles. He then travels on to
andreev551 [17]

Answer:

The constant speed with Ed is travelling is 60 mile per hour

Step-by-step explanation:

Given as :

The distance cover to travel from Jefferson to Holden is (D1) 250 miles

The distance cover to travel from Holden to Paxton is (D2) 50 miles

Total time taken to complete entire journey = T = 5 hours

Let The constant speed of Ed = S mph

Time = \frac{Distance}{Speed}

Or, Time = \frac{D1}{S}  + \frac{D2}{S}

Or, 5 hour =  \frac{250}{S}  + \frac{50}{S}

Or, 5 × S = 250 + 50

So,  5 × S = 300

∴           S = \frac{300}{5}

I.e         S = 60 mph

Hence , The constant speed with Ed is travelling is 60 mile per hour Answer

6 0
3 years ago
The sum of -2 and three times a number
algol13
The sum (addition) of -2 and 3 times (3 ·) a number (n)

-2 + 3n
6 0
2 years ago
Arrange the following polynomial into descending order for x, then interpret the degree of the 3rd term. 2xy4 + 2x2y − 3y2 + 10x
malfutka [58]
To arrange the given polynomial in descending order of x, we only look at the exponent of x in each term and then write it in decreasing order of the value. We do as follows:

2xy^4 + 2x^2y − 3y^2 + 10x^3<span>
10x^3 + 2x^2 + 2xy^4 - 3y^2

The degree of the third term would be 5. The degree of a term is the sum of the exponents of the variables involved in the term.  
</span>
6 0
3 years ago
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