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meriva
3 years ago
8

I NEED HELPP PLEASEE!!!

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
8 0

Answer:

26.4

31.2

33.3

These are the easy questions, the rest will have a square root and a a number outside.

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Mary wants to fill in a cylinder vase. At the flower store they told her that the vase should be filled 3/4 for the flowers to l
Romashka [77]

Answer:

  84.8 in³

Step-by-step explanation:

The formula for the volume of a cylinder is ...

  V = πr²h

The volume Mary will be filling will be 3/4 of the 9-inch height of the vase, so is ...

  V = π(2 in)²(3/4·9 in) = 27π in³ ≈ 84.8 in³

_____

<em>Comment on the answer</em>

In more conventional units of measure, that is very nearly 3 pints of water.

8 0
3 years ago
1 of 20 (19 complete)
Marina86 [1]

I hope this helps you find the answer you're looking for

8 0
3 years ago
Each face of a six-sided cube is painted a different color. The cube is rolled twice and a coin is flipped. How many different p
Vaselesa [24]

Answer:

72

Step-by-step explanation:

There are 6 possible outcomes for the first roll, 6 possible outcomes for the second roll, and 2 possible outcomes for the coin flip. Since all of the events are independent, you can simply multiply these together to get a total of 72 outcomes. Hope this helps!

7 0
3 years ago
Read 2 more answers
95. Because atoms, molecules, and ions are very small, they are counted in units of moles, where 1 mole = 6.022 × 1023 molecules
Galina-37 [17]

Answer:

There are 10⁻⁷ hydrogen ions in one-liter water

Step-by-step explanation:

Hi there!

a. If the pH = 7.0, then:

-log(H) = 7.0

multiply both sides of the equation  by -1

log(H) = -7.0

Apply 10ˣ to both sides

10^(log (H)) = 10⁻⁷

(H) = 10⁻⁷

There are 10⁻⁷ hydrogen ions in one-liter water.

Why 10^(log (H)) = (H)?

Let´s consider this function:

y = 10^(log x)

(Apply log to both sides)

log y = log 10^(log x)

(Apply logarithmic property: log xᵃ = a · log x)

log y = log x · log 10

(log 10 = 1)

log y = log x

y = x

(since y =  10^(log x) and y = x):

10^(log x) = x

That´s why 10^(log (H)) = (H)

7 0
3 years ago
15. Xavier filled a 36 ounce cup with water. He
aniked [119]

Answer:28.8 ounces

Step-by-step explanation:20% -36 =22.8

4 0
3 years ago
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