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user100 [1]
3 years ago
6

A family drives 425 miles the first day, 187 miles the second day and 243 miles the third day of their vacation. The odometer re

ad 47,626 at the start of the vacation. How many miles were driven during the three days? What was the odometer reading at the end of the 3 days
Mathematics
1 answer:
Andreas93 [3]3 years ago
7 0
The reader should say 48,481
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mojhsa [17]

This would just be 7 1/5 + 3/5 since the negative sign gets distributed and makes (-3/5) into a positive number.

From there you have basic math and you get 7 4/5.

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3 years ago
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3 years ago
Using the solubility curve, choose all of the statements that are correct.
irinina [24]

Answer:

See explanation below

Step-by-step explanation:

According to the solubility curve attached, let's analyze each sentence to see which one is correct:

<u>"Solubility of NaCl is least affected by temperature"</u>

True. as you can see in the curve, solubility of NaCl remains almost constant at any value of temperature, so in this case, it does not matter the temperature, the NaCl solubility will be the same.

<u>"completely dissolve 60 g of KBr in 100 g of water at 20 °C"</u>

True. As you can see in the graph, solubility of KBr begins at 60 g, so in 20 °C we have something dissolved there. Actually you have like 70 g dissolved there, so, this is true.

<u>"The solubility of KNO3 is the least affected by changes in temperature"</u>

False. The curve for KNO3 is exponencial, so, changes in temperature do actually affect the solubility.

<u>"100 g of KBr will dissolve completely in 100 g of water at 75 °C"</u>

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<u>"if you mix 120 g of NaClO3 in 100 g of water at 10 °C, approximately 30 g will not dissolve"</u>

True. In the graph we can clearly see that at 10 °C only about 90 g is being dissolved so, the rest of the mass is still there as mass.

6 0
2 years ago
Vhat is the value of the expression below when a -5.b = 7, and c = 6?<br> 9b - 4a + 2c
Vinvika [58]
7393=73-273 is he expression shown below
8 0
3 years ago
A rectangular prism and it’s dimensions are shown in the diagram. What is the total surface are of the rectangular prism in squa
ad-work [718]

Answer: 78.5ft²

Step-by-step explanation:

4.5×4×2+4.5×2.5×2+4×2.5×2=78.5ft²

3 0
2 years ago
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