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OlgaM077 [116]
3 years ago
14

A scientist estimated that a mixture would need 6 milliliters of a chemical to balance. The actual amount needed was 7 millilite

rs. What was the percent error of the scientist's estimation?
Mathematics
1 answer:
Mashcka [7]3 years ago
6 0
Percent relative error is calculated by the formula: (experimental value - literature value/ experimental value) x 100%

Therefore, (6-7/7) x 100% = 14.3%
Your answer is in absolute value :)
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Use substitution to solve the system of equations.<br> y + x = 3<br> y = 1.5x + 1
jeyben [28]

Answer:

x=0.8, y=2.2 (0.8, 2.2).

Step-by-step explanation:

y+x=3

y=1.5x+1

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1.5x+1+x=3

2.5x=3-1

2.5x=2

x=2/2.5

x=0.8

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y=3-0.8

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5 0
3 years ago
Suppose that $30000 is invested at 7% interest. Find the amount of money in the account after 8 years if the interest is compoun
Andreyy89
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7 0
3 years ago
Mariko has an 80: 1 scale drawing of the floor plan of her house. On the floor plan
Ivan

Answer:

16,771.56 square feet.

Step-by-step explanation:

In order to get to the result we will need to use the scale and the numbers that are provided of the dimensions of the room.

The dimensions of the room on the floor plan are 17.8 inches by 21.2 inches. We first need to multiply these numbers with the scale:

17.8 x 80 = 1,424

21.2 x 80 = 1,696

Now that we got the real measures we need to multiply these two values in order to get to a result as in how many square inches is the room:

1,424 x 1696 = 2,425,104

Now we need to convert the square inches into square feet to get to the final result:

1 ft² = 144 in²

2,425,104 / 144 = 16,771.56

So we have a result of 16,771.56 square feet.

4 0
2 years ago
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mrs_skeptik [129]

Answer:

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Step-by-step explanation:

Just use the graph, this graph is hard to get the answer but you just have to estimate.

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2 years ago
Given that slope is rise/run, write the mathematical equation for calculating the slope of a trend line on a graph.
Gennadij [26K]

select two points on the line, and plug into this formula y2-y1 over x2-x1

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2 years ago
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