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Arte-miy333 [17]
3 years ago
13

(u^2+9u+2)+(2u^3+5u^2+8)

Mathematics
1 answer:
Olenka [21]3 years ago
6 0

Answer:

2 u ^3+ 6 u ^2 + 9 u + 10

Step-by-step explanation:

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A chemistry teacher needs to mix a 20% salt solution with a 80% salt solution to make 25 qt of a 44% salt solution. How many qua
NNADVOKAT [17]
Let there be x quarts of the 20% salt solution, and (25 - x) quarts of the 80% salt solution.
Then the total amount of salt in the 20% portion would be 0.2x, while that from the 80% portion would be (0.8)(25 - x). This would have to total up to (0.44)(25) in the final solution, so the equation is:
0.2x + 0.8(25 - x) = (0.44)(25)
-0.6x + 20 = 11
x = 15 quarts of the 20% salt solution
25 - x = 10 quarts of the 80% salt solution
5 0
3 years ago
A circle has an area of 314.1592. What is the diameter? (round to the nearest whole number)
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Answer:

20

Step-by-step explanation:

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We can then write this as

314.1592=π*r^2

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hope this helps

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3 years ago
A study was done by an online retail store to determine the rate at which users used its website. A graph of the data that was c
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C. The range represents the number of users each month for 36 months.
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3 years ago
I need help. Find the value of each variable.
azamat

Answer:

x=8, y=4\sqrt{3}

Look up the 30-60-90 triangle rule

8 0
2 years ago
Read 2 more answers
Pls help i need a good grade​
xenn [34]

Step-by-step explanation:

1\5 ÷3/7=7/15

3/7 multiply by 7/15=1/5

4 0
3 years ago
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