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mezya [45]
3 years ago
14

Mr. Daly, a chemistry teacher needs 10 liters of a 20% saline solution for his afternoon class. Unfortunately, the only mixture

he has is a 5% saline and a25% saline solution. How much of each solution should he mix to produce the 20% solution?
Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

 2.5L of 5% saline and 7.5L of 20% saline solution

Step-by-step explanation:

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What is scatter plots
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Answer: When the data given is spread across the graph at random in no certain order

Step-by-step explanation:

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3 years ago
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Aaron wants to make a path to guide guest through the conservation area.He uses rolls of rope to make the path.He uses 3/4 of a
mel-nik [20]

Answer:

Aaron needs <u>2 more rolls</u> to complete the path.

Step-by-step explanation:

Given:

Total rolls Aaron has = 4

Part of path covered by using \frac{3}{4} of a roll = \frac{1}{8}

So, in order to find the number of rolls required to cover the complete path is given using the unitary method.

Rolls used for \frac{1}{8} of a path = \frac{3}{4}

Therefore, rolls used to cover the whole path is given by dividing the rolls used for one-eighth of the path and the path covered. This gives,

=\frac{3}{4}\div \frac{1}{8}

=\frac{3}{4}\times \frac{8}{1}

=\frac{3\times 8}{4\times 1}

=\frac{24}{4}

=6\ rolls

Now, rolls required to complete the path is 6. But Aaron has only 4 rolls.

So, he will need 6 - 4 = 2 rolls more to complete the path.

5 0
3 years ago
PLEASE HELP FAST ILL GIVE BRAINLIEST
mafiozo [28]

Answer:

x=12

Step-by-step explanation:

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3 0
3 years ago
The two variables price of a house (Y) and size of a house in square feet (X) have a correlation coefficient of .8. What percent
kakasveta [241]

Answer:

64%

Step-by-step explanation:

The coefficient of correlation measures the degree of association between two variables :the dependent and independent variables. It is denoted r, and a positive r such as 0.8 here means there's is a strong relationship between variables likewise a negative -r which only means one variable increases as the other decreases(opposite of r positive coefficient).

When the r coefficient of correlation is squared, we get a coefficient of determination which is used to measure the percentage of change regarding how the independent variable affects the dependent. This is illustrated in our answer where we square our coefficient of correlation to get the coefficient of determination 64% meaning that x which is size of the house will affect 64% of y which is the price of the house

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3 years ago
Help me ill suck your toes
Mama L [17]
The first question is d.
the second question is b.

hope this helps!!
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3 years ago
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