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insens350 [35]
2 years ago
9

Over summer, Jackie played video games 3 hours per day. When school begin in the fall, she was only allowed to play video games

for half an hour per day. What is the percent decrease? Round to the nearest percent
Mathematics
1 answer:
IgorC [24]2 years ago
5 0

Answer:

83%

Step-by-step explanation:


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In a class of 31 pupils, 19 like apples, 15 like oranges and 4
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34 “pupils” like both apples and oranges
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I can't figure out what to write for the word form
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6. 10 ^{3} ⇒ Ten to the third power

7. 10 ^{5} ⇒ Ten to the fifth power
4 0
2 years ago
The principal at valley elementary school had 840 stickers that he gave to 42 children. 2/3 of the children were boys and each o
STatiana [176]

Answer: each girl received 30 stickers.

Step-by-step explanation:

Let x represent the number of stickers that the boys received.

Let y represent the number of stickers that the girls received.

The total number of children was 42. 2/3 of the children were boys. It means that the number of boys were

2/3 × 42 = 28

The number if girls would be

42 - 28 = 14

The total number of stickers that the school principal shared was 840. It means that

28x + 14y = 840- - - - - - - - -1

Each of the boys received the same number of stickers while each girl received twice as many as each boy. It means that

y = 2x

Substituting y = 2x into equation 1, it becomes

28x + 14 × 2x = 840

28x + 28x = 840

56x = 840

x = 840/56

x = 15

y = 2x = 15 × 2

y = 30

4 0
2 years ago
A) Complete this prime factor tree:
Ierofanga [76]

Answer:

2 * 2 * 3 * 3

Step-by-step explanation:

We are to write the value of 36 as a product of of prime factor

Factorizing 36;

2| 36

2| 18

3| 9

3| 3

| 1

Multiplying out all the factors;

36 = 2 * 2 * 3 * 3

Hence the prime factors of 36 are 2 * 2 * 3 * 3

7 0
2 years ago
Jules purchased a box of baseball cards for her collection. The original price was $22.80, but the store was having a sale with
loris [4]

Answer:

The cost of the baseball cards cost with the discount is $17.1.

Step-by-step explanation:

Given : Jules purchased a box of baseball cards for her collection. The original price was $22.80, but the store was having a sale with \frac{1}{4} off the price of all baseball cards.

To find : How much did the baseball cards cost with the discount?

Solution : The original price of baseball cards is $22.80

There is off of  \frac{1}{4} of the original price.

First we find the discount on original price

22.80\times\frac{1}{4}=5.7

Discount is $5.7

So, The cost of the baseball cards cost with the discount is

Cost = Original - Discounted

Cost = $22.80 - $5.7

Cost = $17.1

Therefore, The cost of the baseball cards cost with the discount is $17.1.

6 0
3 years ago
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