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Likurg_2 [28]
4 years ago
13

2) On a multiple choice test with four possible answers for each question, what is the probability of

Mathematics
1 answer:
lina2011 [118]4 years ago
7 0
D) 1/4
is the answer
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The difference of the square of a number and 28 is equal to 3 times that number
Pepsi [2]

Answer:

- 4, 7

Step-by-step explanation:

Let the required number be x.

Therefore, according to the given condition:

{x}^{2}  - 28 = 3x \\  {x}^{2}  - 3x - 28 = 0 \\  {x}^{2}  - 7x + 4x - 28 = 0 \\ x(x - 7) + 4(x - 7) = 0 \\ (x - 7)(x + 4) = 0 \\ x - 7 = 0 \: or \: x + 4 = 0 \\ x = 7 \: or \: x =  - 4 \\

5 0
3 years ago
An article is bought and sold with a profit of 25% of selling price.find the profit percent​
Viefleur [7K]

Answer:33 1/3%

Step-by-step explanation:

7 0
2 years ago
How much is 1 watt in volts
olganol [36]

The answer to your is 100 volts

4 0
3 years ago
If she will buy 35 T-shirts, 45 pairs of shorts, and 25 windbreakers, what will be her total cost?
svetoff [14.1K]

Answer:

Total\ Cost = \$973.75

Step-by-step explanation:

Given (Missing part of question)

T-shirts = $7.50

Shorts = $9.00

Windbreakers = $12.25

Required

Determine the total cost

Total Cost is calculated as follows;

Total\ Cost = Costs\ of\ T-Shirts + Costs\ of\ Shorts + Costs\ of\ Windbreakers

Total\ Cost = 35 * \$7.5 + 45 * \$9.00 + 25 * \$12.25

Total\ Cost = \$262.5 + \$405.00 + \$306.25

Total\ Cost = \$973.75

4 0
3 years ago
Please help I just don't get it
alexdok [17]
Alright so what you are doing is getting the area of the whole triangle, and that formula is what you do so bxh is 5x12 and 5x12=60 then you  need to divide 60 by 2 which is 30 so your answer will be
B 30m^2
7 0
3 years ago
Read 2 more answers
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