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stepladder [879]
3 years ago
6

HELP PLEASEEEEEEEEEEE

Mathematics
1 answer:
Delvig [45]3 years ago
4 0

Answer:

D ctxyvtfycyxtxtcyvvycyxtxycyvyvhvhvh hvhvhvyvhvhvhvjbjbjvhvhvh h

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A druggist has two mixtures of a certain chemical and water, one containing 10% of the chemical and the other containing 40% of
satela [25.4K]
Let x be the amount of the solution containing 10% of the chemical. Then, the solution with 40% chemical becomes 10 - x. The equation for balancing the chemical content of the solution is,
0.10x + 0.40(10 - x) = 0.25(10)
The value of x is 5. Hence, the druggist should mix 5 ounces of each. There are 2.5 ounces of chemical in the final mixture.
4 0
3 years ago
Read 2 more answers
Expand (4x-3y)^4 using pascal's triangle ...?
jenyasd209 [6]
Using row 4: 

<span>coefficients are: 1, 4, 6, 4, 1 </span>

<span>a^4 + a^3b + a^2b^2 + ab^3 + b^4 </span>

<span>Now adding the coefficients: </span>

<span>1a^4 + 4a^3b + 6a^2b^2 + 4ab^3 + 1b^4 </span>

<span>Substitute a and b: </span>

<span>a = 4x </span>
<span>
b = -3y </span>

<span>1(4x)^4 + 4(4x)^3(-3y) + 6(4x)^2(-3y)^2 + 4(4x)(-3y)^3 + 1(-3y)^4 </span>

<span>Now simplify the above: </span>

<span>256x^4 - 768x^3y + 864x^2y^2 - 432xy^3 + 81y^4 </span>
8 0
3 years ago
35 degrees + 90 degrees + k
spayn [35]

Answer:

k would be 55

Step-by-step explanation:

35+90=125 and assuming that you're looking for a supplementary angle, the total must equal 180 so subtract 180-125  and you get k=55

5 0
3 years ago
Determine o valor da expressão: -1 + 6 x (7 – 4 ÷ 2)​
Neko [114]
The answer would be 29
5 0
3 years ago
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In a pre algebra class containing 40 students, there are 18 freshmen, 19 sophomores, and 3 juniors. What fraction of the class a
dezoksy [38]

\frac{9}{20} of the class consists of freshmen.

Step-by-step explanation:

Given,

Total number of students = 40

Number of freshmen = 18

Number of sophomores = 19

Number of juniors = 3

Fraction of freshmen = \frac{Number\ of\ freshmen}{Total\ number\ of students}

Fraction of freshmen = \frac{18}{40}

Fraction of freshmen = \frac{9}{20}

\frac{9}{20} of the class consists of freshmen.

Keywords: fraction, division

Learn more about fractions at:

  • brainly.com/question/10712420
  • brainly.com/question/10744457

#LearnwithBrainly

7 0
3 years ago
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