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Doss [256]
4 years ago
14

Help me plz cant work it out

Mathematics
1 answer:
svetoff [14.1K]4 years ago
7 0

Answer: 27.80

Step-by-step explanation:

(3/5) x 14 = 8.4

That's 4 of the 2 kilogram tubs and 1 of the 1 kilogram tub (gives 9 kilograms)

4 x 6.15 = 24.60

1 x 3.20 = 3.20

24.60 + 3.20 = 27.80

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If a person can walk with an average speed of 5 meters/second, how far will they walk in 8 minutes?
sineoko [7]

Answer:

2,400

Step-by-step explanation: If a person can walk 5 meters per second and there are 60 seconds in a minute then you would multiply 5 by 60 and get 300. Then you multiply that by 8 and get 2,400.

5 0
3 years ago
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Simplify: (-7x + 5) - (2x2 – 8x + 6). Choose the standard form of the answer.
Tcecarenko [31]

Answer:

A.-2x2+-1

Step-by-step explanation:

(-7x+5)-(2x2-8x+6)

-7x+5-2x2+8x-6 then collect like terms

-2x2-7x+8x+5-6

-2x2-x+1

If it's helpful ❤❤❤

THANK YOU

3 0
3 years ago
The product of 2 and the second power of y
Morgarella [4.7K]
The answer is y2*2 

hope this helps
5 0
3 years ago
Which ratio is greater than StartFraction 5 Over 8 EndFraction? StartFraction 12 Over 24 EndFraction Three-fourths StartFraction
Fiesta28 [93]

Answer: B: 3/4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Harvey the hamster can run 3 and 1/6 km in 1/4 of an hour. What is his average speed in kilometers per hour?
liubo4ka [24]
<h3>Answer:  12 & 2/3 km per hour</h3>

In decimal form, this is approximately 12.667 km per hour.

As an improper fraction, 12 & 2/3 = 38/3

==================================================

Explanation:

Let's use this formula

a & b/c = (a*c+b)/c

to convert the given mixed number to an improper fraction.

3 & 1/6 = (3*6+1)/6

3 & 1/6 = 19/6

The mixed number 3 & 1/6 is the same as the improper fraction 19/6

The hamster runs 19/6 km in 1/4 of an hour.

We can express that as the ratio

19/6 km : 1/4 hr

Multiply both parts by 4 so that the "1/4 hr" turns into "1 hr"

19/6 km : 1/4 hr

4*19/6 km : 4*1/4 hr

76/6 km : 1 hr

38/3 km : 1 hr

Harvey runs 38/3 km in 1 hour

Let's convert that to a mixed number

38/3 leads to a decimal, but 36/3 leads to a whole number

So,

38/3 = (36+2)/3

38/3 = 36/3 + 2/3

38/3 = 12 + 2/3

38/3 = 12 & 2/3

You can use your calculator to note that 38/3 = 12.667 approximately, which is also the value of 12 & 2/3, since 2/3 = 0.667 approximately. This helps confirm we did the conversion correctly.

6 0
3 years ago
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