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Elden [556K]
3 years ago
5

14. What is the percent decrease on a DVD recorder that is marked down from $400 to $350?

Mathematics
1 answer:
astra-53 [7]3 years ago
7 0

Answer:

12.5%

Step-by-step explanation:

Percent decrease is calculated as

\frac{decrease}{original} × 100%

Decrease = $400 - $350 = $50 , thus

percent decrease = \frac{50}{400} × 100% = \frac{50(100)}{400} = 12.5%

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Please help me. Please dont answer if you dont know. i will give brainliest. thankyou, have a great day! :)
docker41 [41]

Answer:

1. 3,077.2 cm³

2. 1,808.6 ft³

3. 602.9 in.³

4. 230.8 yd³

5. 191.8 m³

6. 70.3 in.³

Step-by-step explanation:

Recall: Volume of cylinder = πr²h

1. r = 7 cm

h = 20 cm

π = 3.14

Volume = 3.14*7²*20 = 3,077.2 cm³

2. r = 8 ft

h = 9 ft

π = 3.14

Volume = 3.14*8²*9 ≈ 1,808.6 ft³

3. r = ½(8) = 4 in.

h = 12 in.

π = 3.14

Volume = 3.14*4²*12 ≈ 602.9 in.³

4. r = 3½ yd = 3.5 yd

h = 6 yd

π = 3.14

Volume = 3.14*3.5²*6 ≈ 230.8 yd³

5. r = ½(5.3) = 2.65 m

h = 8.7 m

π = 3.14

Volume = 3.14*2.65²*8.7 ≈ 191.8 m³

6. r = 1.9 in.

h = 6.2 in.

π = 3.14

Volume = 3.14*1.9²*6.2 ≈ 70.3 in.³

4 0
3 years ago
O ALGEBRAIC EQUATIONS AND INEQUALITIES
laila [671]

Answer:

Mikhail is 50 years old.

Step-by-step explanation:

Let m represent how old Mikhail is.

110 = (m + 10) + m

Combine equal variables.

110 = 2m + 10

Get the variable alone by cancelling out the 10.

110 - 10 = 2m

Simplify.

100 = 2m

Divide.

m = 50

8 0
3 years ago
Inverse property of addition for real numbers
g100num [7]

Answer:

The answer would be -a

Step-by-step explanation:

In the examples,

5 + (-5) = 0

-1.33 + 1.33 = 0

THat means there will be a negative then a positive, or a positive then a negative.

INVERSE is the key word in this problem.

6 0
3 years ago
5 times a number is 14 less than the square of that number. Find the negative solution.
ryzh [129]
The answer is 7

steps:
7*5=35
7 squared is 49
49-35=14
4 0
3 years ago
Hii please help asap ill give brainliest thanks
notka56 [123]

Answer: A) Buddhism

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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