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Dennis_Churaev [7]
2 years ago
7

Help me please this should be easy ​

Mathematics
1 answer:
vichka [17]2 years ago
3 0

Answer:

what grade are you in ?

Step-by-step explanation:

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if there are two containers of sugar solution, the first is 4% concentration and second is 8% concentration. how much of each sh
Elina [12.6K]

Answer:

<u>30 gallons solution 4% and 10 gallons solution 8%</u>

Step-by-step explanation:

<h3>x•4%+y•8%=40•5% </h3>

<em><u>4x+8y=40•5 and x+y=40</u></em>

x=40-y

4(40-y)+8y=200

160-4y+8y=200

4y=200-160

4y=40 => y=10 (gallons solution 8%)

=> x=40-10=30 (gallons solution 4%)

30 gallons solution 4% and 10 gallons solution 8%

5 0
2 years ago
At the farmers market, Nathaniel buys two dozen oranges at $3.50 per dozen, four kilograms of apples at $3.25 per kilogram, two
kirill [66]
Nathaniel's total cost is $(3.50 x2 + 3.25 x4 +1.90 x2 +1.20) = $24 he got 5% off so he paid $24- (24* 5/100) =$22.80
3 0
3 years ago
Now, suppose one of the roots of the polynomial function is irrational. The roots of the function are 2, <img src="https://tex.z
nikklg [1K]

Irrational roots occurs with its conjugate.

Therefore, -√3 is also root of the function.

The answer is -√3.


6 0
3 years ago
Read 2 more answers
Find the inverse of the function f(x) = (x - 4) 2 - 5 if x ≥ 4.
Serggg [28]
Same here, we do a quick switcharoo on the variables first,

\bf \stackrel{f(x)}{y}=(x-4)^2-5\qquad inverse\implies \boxed{x}=\left( \boxed{y}-4 \right)^2-5&#10;\\\\\\&#10;x+5=(y-4)^2\implies \pm\sqrt{x+5}=y-4\implies \pm\sqrt{x+5}+4=y
6 0
3 years ago
How much water must be evaporated from 32 ounces of a 7% salt solution to make a 8% salt solution. Answer in ounces.
Nadya [2.5K]

You subtract 7% from 32=29.76
Then you subtract 8% from 29.76=27.379

7 0
3 years ago
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