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SOVA2 [1]
3 years ago
15

PLEASE DO WITH STEPS 3, 4 and 5 SOLVE IN RADICAL FORM AND DECIMAL FORM WITH STEPS PLZ WILL MARK AS BRAINLIEST

Mathematics
1 answer:
Solnce55 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

3) (21²-6²)½ = 20.1 cm

4) (10²+7²)½ =12.2 cm

5) (6.5²-2.7²)½ = 5.9 cm

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25% of what equals 21 ?
vaieri [72.5K]
84, since 25% equals 1/4 multiply 21 by 4 to get your answer. 
6 0
4 years ago
(10x5)-(30+20)x10=
Dovator [93]
50-50x10=0

Because

50-50 is 0 and you cannot multiply anything by 0
7 0
3 years ago
Read 2 more answers
If l=3, w= 3, and h= 5, what is the volume of this box​
ArbitrLikvidat [17]

Answer and Step-by-step explanation:

To find the volume, we multiply the length by the width by the height for a rectangular prism (aka the box).

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width = w = 3

height = h = 5

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6 0
3 years ago
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A tank contains 1000L of pure water. Brine that contains 0.02kg of salt per liter enters the tank at a rate of 5L/min. Also, bri
tankabanditka [31]

Answer:

51.877 kg

Step-by-step explanation:

a

See attachment for calculations

b

The amount of salt in the tank after 4 hours is gotten by simply replacing t in the equation from a, with 4 hours. Since the t gotten in a above is in minutes, we'd convert hours to minute as well. If we do that, we have

t = 4 hours = 4 * 60 minutes = 240 minutes

y = 160/3 (1 - e^((-3 * 240)/200))

y = 160/3 (1 - e^(-720/200))

y = 160/3 (1 - 0.0273)

y = 160/3 (0.9727)

y = 51.877 kg

Therefore, the amount of salt in the tank after 4 hours is 51.877 kg

3 0
3 years ago
The function v(r) =4/3 3far can be used to find the volume of air inside a basketball given its radius. What does V(T)
melisa1 [442]

Answer:

B

Step-by-step explanation:

The correct answer is B

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3 years ago
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