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Minchanka [31]
2 years ago
10

If a number becomes 2.5 times smaller, by what percent was it decreased?

Mathematics
2 answers:
meriva2 years ago
7 0
40% ^ like the person above me said
Gwar [14]2 years ago
4 0

Answer: 40%

Step-by-step explanation: 1 Divided by 2.5 is 0.4, or 40%.

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The marketing club at school is opening a student store. They randomly survey 50 students about how much money they spend on lun
Luden [163]

Answer:

The expected value for a student to spend on lunch each day = $5.18

Step-by-step explanation:

Given the data:

Number of students______$ spent

2 students______________$10

1 student________________$8

12 students______________$6

23 students______________$5

8 students_______________$4

4 students_______________$3

Sample size, n = 50.

Let's first find the value on each amount spent with the formula:

\frac{num. of students}{sample size} * dollar spent

Therefore,

For $10:

\frac{2}{50} * 10 = 0.4

For $8:

\frac{1}{50} * 8 = 0.16 l

For $6:

\frac{12}{50} * 6 = 1.44

For $5:

\frac{23}{50} * 5 = 2.3

For $4:

\frac{8}{50} * 4 = 0.64

For $3:

\frac{4}{50} * 3 = 0.24

To find the expected value a student spends on lunch each day, let's add all the values together.

Expected value =

$0.4 + $0.16 + 1.44 +$2.3 + $0.64 + $0.24

= $5.18

Therefore, the expected value for a student to spend on lunch each day is $5.18

7 0
2 years ago
At a candy store you can pay $16.10 for 7 giant lollipop what would be the cost for 6 lollipops?
Alex Ar [27]

Answer: $13.80 for 6 giant lollipops

Step-by-step explanation: To find the cost of 6 giant lollipops at the candy store, we first need to find the unit price for a giant lollipop.

Unit price means the cost per unit,

in this case, the cost per giant lollipop.

Since we know that it costs $16.10 for 7 giant lollipops, to find the cost

for 1 giant lollipop, we need to 16.10 by 7.

16.10 divided by 7 is 2.3.

This means that each lollipop is $2.30.

Now to find the cost for 6, we multiply

the cost per 1 lollipop by 6.

So we have 2.30 × 6 which is $13.80.

So the cost for 6 lollipops at the candy store is $13.80.

8 0
3 years ago
What is the answer and show your work plz
alexandr402 [8]

Answer:

C. Multiply both 2and 4 into it then you'll have the answer

8 0
2 years ago
How much farther did the gold medal winner jump than the silver medal winner? Heres the chart:
zmey [24]

0.04 is the ancer                          

you just got to subtract

4 0
3 years ago
Read 2 more answers
PLEASE SOMEONE ASAP HELP ME!!!!!!!!!!!
MrRissso [65]
She distributed incorrectly.
7 0
2 years ago
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