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8090 [49]
3 years ago
8

Factor completely.

Mathematics
1 answer:
Svetllana [295]3 years ago
6 0
To help explain how you get A for the answer:
work backwards
5(3a²+11a-4)
multiply everything by 5
5×3a²=15a²
5×11a=55a
5×-4=-20
15a²+55a-20
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A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is
krok68 [10]

Answer:

The scientist must use 10 ounces of Solution A and 40 ounces of Solution B.

Step-by-step explanation:

Since a scientist has two solutions, which she has labeled Solution A and Solution B, each containing salt, and she knows that Solution A is 40% salt and Solution B is 90% salt, and she wants to obtain 50 ounces of a mixture that is 80% salt, to determine how many ounces of each solution should she use the following calculation must be performed:

100 x 0.9 + 0 x 0.4 = 90

90 x 0.9 + 10 x 0.4 = 85

80 x 0.9 + 20 x 0.4 = 80

50 x 0.8 = 40

Therefore, the scientist must use 10 ounces of Solution A and 40 ounces of Solution B.

8 0
2 years ago
What is taxes? What is Texas' tax rate?
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Taxes are extra expenses that the government gives to support the economy and the rest goes to the shop owner and the employees. Texas’ tax rate is 6.25%.
7 0
2 years ago
1 Which of the following situations describes the use
Rzqust [24]
1. C
2. B (wanna turn that in on time)
3. C (perfect!)
4. 600,000 (just gotta multiply, and subtract) 
5. $22.74
6. C (corresponds kind of with 2 and 3)
7. i don't see the table, i'm sorry.. 
8. 10 
9. C
10. B 

hope this helps! 
5 0
2 years ago
Read 2 more answers
Carli wants to put some prints that are 4 1/2 inches wide side by side on a wall that is 26 1/4 wife. How many prints can she pl
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She can fit 6 on her wall.
4 0
3 years ago
You make an initial investment of $500. Fill in the table below to show how much money you would have after 3 years if your acco
Aleksandr [31]
After three years, your investment would be $575. The formula is A=P(1+(r/n)^(n*t) where A is the final amount, P is the initial balance, r is the interest rate, n is the amount of time the interest is compounded in a year, and t is the amount of time that has passed.
P=500
r= 5% is which converted into a decimal by dividing 5 by 100 which is then 0.05
n= 1 since it is compounded annually
t= 3
Hope this helped.
3 0
3 years ago
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