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sergey [27]
3 years ago
15

A shop sells compost in 20 litre bags and in 40 litre bags.

Mathematics
1 answer:
vlada-n [284]3 years ago
5 0

Answer:

2

Step-by-step explanation:

3.50/2 = 1.75 and 9/3= 3

so 2 bags for £3.50 is better than 3 bags for £9

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You need to rent a bowling lane. On Friday nights, you have two options. Option A is a $20 lane rental plus $3 per game. Option
ExtremeBDS [4]

For 5 games, the cost will be equal for each option.

Step-by-step explanation:

Given,

Lane rental of offer A = $20

Per game charges = $3

Let,

x be the number of games.

A(x) = 3x + 20

Lane rental is $35 for maximum 10 games.

B(x) = 35

For the cost to be same;

A(x) = B(x)

3x+20=35\\3x=35-20\\3x=15

Dividing both sides by 3

\frac{3x}{3}=\frac{15}{3}\\x=5

For 5 games, the cost will be equal for each option.

Keywords: function, division

Learn more about functions at:

  • brainly.com/question/10772025
  • brainly.com/question/10879401

#LearnwithBrainly

6 0
3 years ago
The quotient of two times a number k and -2.6 is 12
a_sh-v [17]
-15.6 Is the answer. You do inverse
7 0
3 years ago
Please help fast!!!!
Monica [59]

Answer:

C

Step-by-step explanation:

The exponent is negative so you put the number under 1 with the exponent positive

6 0
3 years ago
Read 2 more answers
HELP!
Vesna [10]
A(n)=a+(n-1)d
A(40)= -1+(40-1)-4
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A(40)= -1+(-156)
A(40)= -157
4 0
3 years ago
The Cobb family of Fremont is looking at ways to decrease their home water and energy usage. Their current electric hot-water he
OverLord2011 [107]

Answer:

  ai) 73000 gal/yr

  aii) $730 per year

  b) 1000 days

Step-by-step explanation:

ai) The water usage per day is ...

  (4 showers/day)(10 min/shower)(5 gal/min) = 200 gal/day

Then the usage per year is ...

 (200 gal/day)(365 days/yr) = 73,000 gal/yr

__

aii) The cost of electricity is the cost of heating half the water usage, so is ...

  (0.20 kWh/gal)(1/2)(73,000 gal/yr)($0.10/kWh) = $730/yr

__

b) The current daily cost of electricity for heating water is ...

  ($730/yr)/(365 days/yr) = $2/day

If the cost is cut in half, it will be $1 per day. That means the savings is $1 per day, so it will take 1000 days to recover the $1000 initial cost. (Effectively, the average cost for the first 1000 days is the same as if the water heater had not been replaced.)

5 0
3 years ago
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