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Ymorist [56]
3 years ago
5

Multiplying a number by 4/5 then dividing by 2/5 is the number same as multiplying by what number ?

Mathematics
1 answer:
Citrus2011 [14]3 years ago
8 0

Answer:

2

Step-by-step explanation:

When we multiply a number by \frac{4}{5} and then we divide by \frac{2}{5} we get

\displaystyle \frac{\frac{4}{5}}{\frac{2}{5}} =\frac{4}{5}*\frac{5}{2}=2

So, both operations are equivalent to multiply by 2

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¿Cuántas soluciones tiene la ecuación 2 + 6 (x - 4) = 3x - 18 + 3x?
Elena-2011 [213]

Answer:

x is undefined

Step-by-step explanation:

2 + 6(x - 4) = 3x - 18 + 3x

Open the bracket

2 + 6x - 24 = 3x - 18 + 3x

collect the like terms

6x -3x - 3x = -18 +24 - 2

0x = 4

x = 4/0

x is undefined

3 0
3 years ago
Twin brothers,billy and Bobby, can mow their grandparents lawn together in 72 minutes. Billy could mow the lawn by himself in 15
Alla [95]

Answer:

Billy used 28 mins 30 sec to mow the lawn and Bobby used 43 mins 30 sec to now the lawn both within 72 mins

Step-by-step explanation:

let x represent Billy

let x+15 represent Bobby

x + x + 15 = 72

2x = 72 - 15

2x = 57

2x/2 = 57/2

x = 28.5 minutes = 28 minutes 30 seconds

Bobby = x + 15

= 28.5 + 15

= 43.5 minutes= 43 minutes 30 seconds

6 0
3 years ago
I need help I do not get it please help
zhenek [66]
The first fraction is 4 over 6, right? hopefully it is, i cant really see. 
Basically, you can divide 4 and 6 by the same number, they have factors in common. They're both multiples of 2. if you divide them both by 2, you get 2 over 3, which is the <em>exact same amount as 4 over 6, it's just written in a simpler way. </em>the first answer is 2 over 3.

What numbers can both 10 and 15 be divided by? give it a try.
4 0
4 years ago
Read 2 more answers
How many times does 12 go into 60?
statuscvo [17]

Answer:

5 times

Step-by-step explanation:

3 0
3 years ago
A coffee shop gives the customer a free cup of coffee after the purchase of 5 cups: a.) industrial marketing program b.) loyalty
AveGali [126]
I think it’s a loyalty marking program. I think it’s that because I feel like it’s the only answer that really makes sense bc the customer is being loyal to the service in order to receive their “reward”
3 0
2 years ago
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