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olasank [31]
3 years ago
9

Please help! Help is appreciated! :)

Mathematics
1 answer:
-Dominant- [34]3 years ago
4 0
Your answer to the question is A
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You need 320 mL of a 85% alcohol solution. On hand, you have a 60% alcohol mixture. How much of the 60% alcohol mixture and pure
Radda [10]

Answer:

Step-by-step explanation:

If we let x = the amount of 5% solution and y = the amount of pure alcohol, we can set up that

.05x+y is the amount of alcohol in our resulting mixture, and x+y is the total amount in our resulting mixture (which we know is 380)

so we also know that:

(.05x+y)/380 = .6

If we simplify this we come up with:

.05x+y=228

and we know x+y=380

If we solve this as a system of equations, we will find that:

x=160 ml

y=220 ml

5 0
3 years ago
A right rectangular prism has a length of 5 cm, a width of 4 cm, and a height of 3 cm. The dimensions of the prism are doubled.
julia-pushkina [17]
Volume of a Rectangular Prism = Length * Width * Height

Step 1:
Double your dimensions

5 cm x 2 = 10 cm
3 cm x 2 = 6 cm
4 cm x 2 = 8 cm

Step 2:
Multiply them together

Volume = 10 x 6 x 8
Volume = 60 * 8
Volume = 480 cm^3

6 0
3 years ago
Read 2 more answers
Simplify the following question
fiasKO [112]

Answer:

<em>−  2sin(b) / cos(2b)</em>

​

Step-by-step explanation:

DIFFERENTIATE W.R.T. B is a different method entirely

We simply add together the numerators and set with 2cos

then keep this number and add to sinb and square it.

then repeat initial 2 + cosb ^2 but instead of multiplying its add.

Then set the whole division to -sin (2b) squared then +1

<em> −  2cos(b)(3(sin(b))^2+(cos(b))^2)  /  −(sin(2b)) ^2 +1  </em>

​

 

5 0
2 years ago
14 less than 8 times 8 number is 3 more than four times the number what is the answer​
aliina [53]

Answer:The answer is 11.75

Step-by-step explanation:

5 0
3 years ago
Assume that the following events are independent:
NNADVOKAT [17]

Answer:

D 0.61

Step-by-step explanation:


0.42

0.69

= 0.6089

7 0
4 years ago
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