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Neko [114]
2 years ago
13

For every one litre of water used to make medicine, 150 ml of sucrose and 600 ml of saline solution is used. Express the amount

of water, sucrose and saline solution needed as a ratio in its simplest form
Mathematics
1 answer:
dolphi86 [110]2 years ago
5 0

Answer: 20 : 3 : 12

Step-by-step explanation:

For every 1 litre, 150 ml of sucrose and 600ml of saline solution is needed.

1litre = 1,000 ml

Water = 1,000 ml

Ratio:

1,000 : 150 : 600

Divide by 50 to get simplest form:

20 : 3 : 12

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Orlando bought a new couch for $2,904, using the furniture store's finance plan. He will pay $121 a month for 24 months. Which e
jolli1 [7]
Answer : y=<span>2,904-121x , x for month 

when you replace any number in "x" you mean  how many months you pay (witch mean the sums of the all (121$)  )  so when you </span>Subtract this all 121$  value you will get the the value of what you <span>still owes </span>
4 0
2 years ago
The Acme Candy Company claims that​ 60% of the jawbreakers it produces weigh more than 0.4 ounces. Suppose that 800 jawbreakers
vichka [17]

Answer:

Yes, it would be statistically significant

Step-by-step explanation:

The information given are;

The percentage of jawbreakers it produces that weigh more than 0.4 ounces = 60%

Number of jawbreakers in the sample, n = 800

The mean proportion of jawbreakers that weigh more than 0.4 = 60% = 0.6 = \mu _ {\hat p} =p

The formula for the standard deviation of a proportion is \sigma  _{\hat p} =\sqrt{\dfrac{p(1-p)}{n} }

Solving for the standard deviation gives;

\sigma  _{\hat p} =\sqrt{\dfrac{0.6 \cdot (1-0.6)}{800} } = 0.0173

Given that the mean proportion is 0.6, the expected value of jawbreakers that weigh more than 0.4  in the sample of 800 = 800*0.6 = 480

For statistical significance the difference from the mean = 2×\sigma _{\hat p} = 2*0.0173 = 0.0346 the equivalent number of Jaw breakers = 800*0.0346 = 27.7

The z-score of 494 jawbreakers is given as follows;

Z=\dfrac{x-\mu _{\hat p} }{\sigma _{\hat p}  }

Z=\dfrac{494-480 }{0.0173  } = 230.94

Therefore, the z-score more than 2 ×\sigma _{\hat p} which is significant.

8 0
2 years ago
A career placement test eliminates a profession when a person receives a score of 18 or less. If the score is calculated
Volgvan

Answer:

See the figure attached

Step-by-step explanation:

Let's call :

x: positive response

y: negative response

then the score is:

2x - 3y

A career placement test eliminates a profession when a person receives a score of 18 or less, that's represented by the following inequality:

2x - 3y ≤ 18

3 0
2 years ago
Read 2 more answers
A store charges 7% sales tax. Which expression can be used to find the total cost of an item with a price of p? 0.07p 0.93p 1.07
Zanzabum

If you have an item that costs 10 dollars and a sales tax of 7% you could do it this way


10 * 7/100 = 0.70 dollars.


The total cost is 10.70 dollars. or 10 dollars and 70 cents.

The best way to do the total however is to multiply the cost by 1.07. You will get the number the customer has to pay.

10 * 1.07 = 10.70

So for any price (p) it would be 1.07*p

5 0
2 years ago
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Doris put $4000 in a 5­year CD paying 6% interest compounded monthly. After 2 years, she withdrew all her money, and as an early
sp2606 [1]
For APEX it is going to be 4261.93

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