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Alecsey [184]
3 years ago
11

Pure acid is to be added to a 10​% acid solution to obtain 21 L of a 40​% acid solution.

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0

7 gallons of pure acid and 14 gallons of 10% acid

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a triangle pyramid with an equilateral base has a side length of 10 centimeters and a surface area of 214.5 square meters. find
sweet [91]
Area of the base = 1/2 * 10 *  5sqrt3 =  25 sqrt3

Total surface area = 25 sqrt3 + 3 *  1/2 * 10 * slant height = 214.5

25 sqrt3 + 15h = 214.5
15h = 214.5 - 25 sqrt3

h =   (214.5 - 25sqrt3() / 15

=  11.41 cm to nearest hundredth
6 0
3 years ago
What is the reduced and simplified value of the expression given below?
blsea [12.9K]

Answer:

\frac{ \sqrt{16} \times  \sqrt{25}  } { \sqrt{4} }  =  \frac{4 \times 5}{2}  \\  = 20 \div 2 \\  = 10

where \:  \sqrt{16}  = 4 \\  \sqrt{25}  = 5 \\  \sqrt{4 }  = 2

Step-by-step explanation:

Answer is given above with explanations .

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<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

4 0
2 years ago
Someone help me and answer these ASAP PLS
vfiekz [6]

Answer:

1. The powers include: budgeting and appropriation of funds for all county activities; building and maintaining county roads; making and enforcing civil and criminal resolutions and ordinances not in conflict with state law, including those for land use and building construction; supporting and implementing.

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Step-by-step explanation:

8 0
2 years ago
Which point best approximates 45
Rashid [163]
What do you mean by point? Can you explain this? If you mena on a graph it would be a letter. If any other, im not sure.
3 0
3 years ago
Read 2 more answers
Plz Help
Lena [83]

Answer:

Plz Help

Factor x2 + 2x - 15.  

A)  (x - 5)(x + 3)  

B)  (x - 5)(x - 3)  

C)  (x + 5)(x + 3)  

<u> D)  (x + 5)(x - 3)</u>

Step-by-step explanation:

(x+5)(x-3)=x+2x-15

6 0
3 years ago
Read 2 more answers
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