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bezimeni [28]
3 years ago
8

During its first year, there were 138 volunteers at a community outreach program. Over the next 2 years, there were 156 voluntee

rs and 175 volunteers, respectively. What is the percent of increase in volunteers from Year 1 to Year 2 and from Year 1 to Year 3? Round to the nearest tenth percent if necessary.
Mathematics
1 answer:
dem82 [27]3 years ago
5 0

Answer:

0.1%

Step-by-step explanation:

138 into a percent=1.38%

156 into a percent=1.56%

175 into a percent=1.75%

1.38-1.56=0.18

1.56-1.75=0.19

0.19-0.18= <u>0.1%</u>

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Small scooters cost £80 and large scooters cost £130. A school buys few scooters for the playground for £1000. How many of the s
Sonbull [250]

Answer:

Small scooters = 6

Large scooters = 4

Step-by-step explanation:

Let S represents small scooter and L represents large scooter

The cost of a small scooter is £80

Mathematically,  the cost of S number of small scooters is

80S

The cost of a large scooter is £130

Mathematically,  the cost of L number of large scooters is

130L

The total amount spent on both scooters is £1000

Mathematically,

80S + 130L = 1000

So we have 2 unknowns and only 1 equation. Therefore, we have use trial and error method .

Trial and Error Method:

80S + 130L = 1000

80S = 1000 - 130L

S = (1000 - 130L)/80

Let’s suppose they bought 1 large scooter

S = (1000 - 130(1))/80

S = 10.875

Number of scooters cannot be in fraction so 1 doesn’t work

Let’s suppose they bought 2 large scooter s

S = (1000 - 130(2))/80

S = 9.25

Number of scooters cannot be in fraction so 2 doesn’t work

Let’s suppose they bought 3 large scooter s

S = (1000 - 130(3))/80

S = 7.625

Number of scooters cannot be in fraction so 3 doesn’t work

Let’s suppose they bought 4 large scooters

S = (1000 - 130(4))/80

S = 6

So that means they bought 6 small scooters and 4 large scooters.

Similarly, other combinations for scooters don’t work since they yield either fractional value or negative value which cannot be correct.

Therefore, the only possible combination of small and large scooters is

6 Small scooters

4 Large scooters

Verification:

80S + 130L = 1000

80(6) + 130(4) = 1000

480 + 520 = 1000

1000 = 1000 (satisfied)

8 0
4 years ago
Please what is the answer 2/7x=2/3
iVinArrow [24]

Answer: 7/3

Step-by-step explanation:

1. you multiply 2/7 on both sides to get x by it self.

2. then you can cross out both the 2's and get 7/3 as the final answer.

7 0
3 years ago
Read 2 more answers
JIM'S BACKYARD IS A RECTANGLE THAT IS 15 5/6 YARDS LONG AND 10 2/5 YARDS WIDE. JIM BUYS SOD IN PIECES THAT ARE 1 1/3 YARDS LONG
Stolb23 [73]
Jim's backyard:
15 5/6 yd long
10 2/5 yd wide

Sod pieced:
1 1/3 yd long
1 1/3 yd wide

Area of backyard:
15 5/6 times 10 2/5 =
164 2/3 yd

Area of Sod Piece:
1 1/3 times 1 1/3 =
1 7/9 yd

Divide area of backyard by area of sod piece :
164 2/3 divided by 1 7/9 =
92 5/8

He will need to buy 93 pieces of sod to cover his backyard.
7 0
3 years ago
Please help me immediately ​
Elis [28]
I hope this helps you out. It is very tedious

6 0
4 years ago
Jeff sold half of his baseball cards rhen bought 16 more.now he has 21 baseball cards. How many cards did he begin with?
miv72 [106K]

Answer:

he started with 10

Step-by-step explanation:

so if he sold half, that means he still has half..

let c represent the total cards

1/2c + 16 = 21

1/2c = 21 - 16

1/2c = 5

c = 5 * 2

c = 10 <====

8 0
3 years ago
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