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erma4kov [3.2K]
3 years ago
12

Please help my son dose not understand this ..!!!!!! I’m asking for help ASAP

Mathematics
1 answer:
V125BC [204]3 years ago
8 0

Answer:

cat-7kgs

bananas-1kg

nickel-5gs

dollar-1g

part a- 464 grams

part b- 355 grams

part a- 86 grams

part b- 12 grams

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Water is leaking out of an inverted conical tank at a rate of 6800.0 cubic centimeters per min at the same time that water is be
m_a_m_a [10]

Answer:

6.82 mt^3/min

Step-by-step explanation:

By congruence of triangles, the radius r of the cone base when its height is 1 meter satisfies the relation

r/1 = 2.5/6

(See picture attached)

So, r = 0.4166 meters when the water is 1 meter high.

The volume of a cone with radius of the base = R is given by

V=\frac{\pi R^2h}{3}

So, the volume of water when it is 1 meter high is

V=\frac{\pi* 0.(4166)^2}{3}=0.1817\;mt^3

One minute later, the height of the water is 1 meter + 30 centimeters = 1.30 mt

The radius now satisfies

r/1.3 = 2.5/6

and now the radius of the base is

r = 0.5416 mt

and the new volume of water is 0.3071\;mt^3

So, the water is raising at a speed of

0.3071-0.1871 = 0.12 mt^3/min

This speed equals the difference between the water being pumped and the water leaking,

So,  

<em>0.12 = Speed of water being pumped -6.8  </em>

and

Speed of water being pumped = 6.8+0.12 = 6.82 mt^3/min

8 0
3 years ago
(d) Nigel measures out 30 grams from a 1 kilogram bag of sugar.
Brut [27]

Answer:

3%

Step-by-step explanation:

1kg = 1000g

30÷1000 × 100 = 0.03×100=3%

8 0
3 years ago
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Please answer and explain how you go the answer
AfilCa [17]

Answer:

38°

Step-by-step explanation:

It's simple think of it like this: A right angle is exactly 90 degrees. Subtract the 90° and the 52° and you'll get your answer of 38° which is x°.

Hope this helped you out :)

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3 years ago
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PLS HELP TYSM WILL GIVE BRAINLIEST
Shkiper50 [21]

Answer:

2x - 3y

Step-by-step explanation:

-1/4(-8x+12y) = 2x - 3y

4 0
2 years ago
100p for an answer please help!!!!!!!!!!!
djyliett [7]
The second option down, "nine times the difference of a number cubed and three", is the correct answer.
8 0
3 years ago
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