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Vlada [557]
3 years ago
9

Help me with these questions

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0
For number 6 it's 30 x 45
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The number that is multiplied by a power of 10 in scientific notation must be in between 1 and 10
vazorg [7]

Answer:

Thats false

Step-by-step explanation:

When you multiply by a power your basically multiplying that number b itself 10x except for 1

4 0
3 years ago
A fish tank that is 5 feet long by 3 feet wide by 3 feet high has a 2 foot cubic stone placed in the bottom how much water will
maks197457 [2]

Answer:

37ft³

Step-by-step explanation:

Volume of the fish tank = length × width × height = 5ft × 3ft × 3ft = 45ft³

Volume of the cubic stone = length × length × length = (2ft)³ = 8ft³

Volume of the water = volume of the fish tank - volume of the cubic stone

i.e Volume of the water = 45ft³ - 8ft³ = 37ft³

4 0
3 years ago
What is the volume of this sphere?
Darina [25.2K]

Answer:

523.59 or 523.60

Step-by-step explanation:

Volume for a sphere: 4/3πr^3 (4÷3x π x r ^ 3)

(r is radius, V is volume)

V= 4/3 x π x r^3

The diameter is 10, so the radius is 5...

V= 4/3 x π x 5^3

V= 4/3 x π x 125

CALCULATER: 4 ÷ 3 x π x 125

Answer 523.59  (523.60 rounded)

6 0
3 years ago
The sum of x and ten is twenty( write the equation
iren [92.7K]

Answer:

2x10=20 X=2

Step-by-step explanation:

Please mark brainliest

5 0
3 years ago
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ivanzaharov [21]

Answer:

Step-by-step explanation:

7 0
2 years ago
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