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marin [14]
3 years ago
14

BRAINLIEST HELP ME PLEASEEEEEE IM IN DANGER OF STAYING BACK:(((

Mathematics
1 answer:
Andrew [12]3 years ago
5 0

Answer:

  • 24 ounces of solution B
  • 16 ounces of solution A

Step-by-step explanation:

The largest contributor of salt to the mix is the 45% solution (B), so we'll let our variable (b) represent the quantity of that. The total amount desired is 40 ounces, so the quantity of solution A is (40-b) ounces. Then the amount of salt in the mix is ...

  0.45b +0.20(40-b) = 0.35(40)

Simplifying and subtracting 0.20(40), we get ...

  0.25b = 0.15(40)

  b = 40(.15/.25) = 24

  (40-b) = 16

The scientist should use 24 ounces of Solution B and 16 ounces of Solution A.

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Write down the degree of given polynomial 5x⁴+4x²+2x+1​
shusha [124]

Answer:

4

Step-by-step explanation:

To find the degree of a polynomial, identify the term with the greatest exponent. The exponent of that term is the degree of the polynomial.

In the given polynomial 5x⁴+4x²+2x+1​, the term with the greatest exponent is 5x⁴. This term has an exponent of 4, so therefore, the degree of the polynomial is 4.

I hope this helps!

6 0
2 years ago
Which function can be used to find the number of cells of bacteria in the population at time t
Nonamiya [84]

Answer:

db / dt = kb  

this becomes b(t) = Ce^(kt)  

C = 100, the initial population  

P(1) = 420 = 100 e^(1k)  

4.2 = e^k  

ln 4.2 = k  

a) thus, b(t) = 100 e^(t ln 4.2)  

b) b(3) = 100 e^(3 ln 4.2)  

c) growth constant will still be ln 4.2 (constant percentage of populatioin)  

d) 10000 = 100 e^(t ln 4.2)  

100 = e^(t ln 4.2)  

ln 100 = t ln 4.2  

t = ln 100 / ln 4.2

Step-by-step explanation:

6 0
2 years ago
How many solutions does y-10 =2x have
Travka [436]
Y= 2x+10 would be the equation and it would have no solution because there's no value if x nor y
7 0
3 years ago
If 20% of a school was made up of out-of-district students last year, but the number of out-of-district students increased by 50
Nadya [2.5K]

Answer:

<h2>30% is enrolled out-of-district.</h2>

Step-by-step explanation:

According to the word problem, the number is increased by 50%.

To increase a number by a percent, multiply the number and the percent.

We can do this by changing both percents to decimals.

To change a percent to a decimal, divide it by 100.

20/100 = 0.2

50/100=0.5

The number is INCREASED by 50% so 0.5 would become 1.5.

0.2 * 1.5=0.3

<h2>0.3 = 30%.</h2>
4 0
2 years ago
A medical office administers a survey, regarding patient satisfaction. Based
Tresset [83]

Answer:     C. Use a larger sample size   and   D. Larger confidence level

Step-by-step explanation:       The information will be more accurate, as it is not right now and if there are more people then there will be a huge group of people that agree on one thing.

7 0
3 years ago
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