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lbvjy [14]
3 years ago
12

Any of these questions please

Mathematics
1 answer:
maw [93]3 years ago
7 0

Answer:

See the explanation below.

Step-by-step explanation:

f(t)=21020\left(1+0.012\right)^t\\\\f(t)=21020\left(1.012\right)^t\\

Starting from t=2002

By putting t=2015-2002=13  we have:

f(t)=21020\left(1.012\right)^{13}\\\\\approx 24546

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27. A

28. A

Step-by-step explanation:

This stuff is simple. I just did this last week. I did the same exact sheet and i got a 100%

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Identify the y intercept of the parabola below
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The y intercept for this one is two.

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How much of other chemicals must be evaporated from 400 grams of a hand sanitizer
yulyashka [42]

Answer:

24 g

Step-by-step explanation:

We first find the mass of 24 % alcohol in 400 g of hand sanitizer. Let x be the mass of alcohol. So, x/400 × 100 % = 24 %

x/400 = 0.24

x = 0.24 × 400

  = 96 g

The mass of the other chemicals is thus 400 g - 96 g = 304 g

We now find the mass of 30 % alcohol in 400 g of hand sanitizer. Let y be the mass of alcohol. So, y/400 × 100 % = 30 %

y/400 = 0.30

y = 0.30 × 400

  = 120 g

The mass of the other chemicals is thus 400 g - 120 g = 280 g

The mass of other chemicals that needs to be evaporated is thus 304 g - 280 g = 24 g

5 0
3 years ago
Tim and Jane both work for a company that sells boxes of breakfast cereal. the boxes of cereal cost £3.00 and the amount of cere
Alenkasestr [34]

Answer:

25%

Step-by-step explanation:

As the given situation the parameters are below:-

Cost of each box = 3 pounds

Amount of cereal in each box = 160 g

now,

160 g of cereal = 100%

and

25% of 1 box of cereal = 25% of 160 g which is

= \frac{25}{100} \times 160 g= 40 g

As per the question,  it is mention that Jane need her idea to give the equal value of amount as Tim's idea, provided

160 g of cereal costs 3 pounds

and

1 g of cereal will cost

=  \frac{3}{60}\ pounds

40 g of cereal will cost 40\times \frac{3}{160}  = \frac{3}{4}\ pounds

So, the percentage of \frac{3}{4} the pound is of 3 pounds is 3 ÷ 4 ÷ 3 × 100

= 25%

Therefore as the situation, Jane need to decline the amount by 25% for the same amount as Tim's idea.

3 0
3 years ago
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