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Greeley [361]
2 years ago
8

how many grams of a 15 percent alcohol solution should be mixed with 40 grams of a 30 percent solution to obtain a solution that

is 25 percent alcohol
Mathematics
1 answer:
quester [9]2 years ago
8 0
According to my calculations it should be 77
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A ray bisects an obtuse angle into 2 congruent angles. what type of angle are those 2 congruent angles
VikaD [51]
A. An obtuse angle is less than 180 but greater than 90. So for examples sake I will use 179 degrees. 179 divided by 2 (as the angles are congruent) = 89.5 which is less than a right angle. Therefore, the angles will be acute.

Hope it helps :)
6 0
3 years ago
Read 2 more answers
A line that passes through [-7,3] and [-6,-1]
juin [17]
Sorry idk, but I’ll try to do it
3 0
3 years ago
Please help ASAP. Find the volume of the trapezoid as a simplified expression. If correct I will give brainliest.
Leokris [45]

Answer:

2x^2*(2x^3+8x^2+2x)      or

4x^5+16x^4+4x^3

Step-by-step explanation:

A=[2x^3-x+(8x^2+3x)]*4x^2/2=2x^2*(2x^3+8x^2+2x)

or A=4x^5+16x^4+4x^3

6 0
3 years ago
Easy 20 points please tell me if I got it right and if not please tell me the right answer
mash [69]

Answer:

No, you are not correct.

It should look like this:

                              Prefer colorful decorations      Prefer neutral decorations

Pay attention                           20                                                  25

to fashion

Do not pay

attention to                              72                                                      33

fashion

Step-by-step explanation:

33 is 22% of 150. In the question it states that 70% of people do not pay attention to fashion. We need to find the other 48% here. In order to do that we multiply .48 by 150. That gets us 72. To check that answer you can add both 72 and 33 and then divide by 150, which gets 70%.

To get the amount of people that prefer neutral decorations and pay attention to fashion we need to add up 20 + 72 + 33 and that equals 125. Next, we take 150 and minus 125 of it to get 25.

<em>Hope this helps!!</em>

<em>- Kay :)</em>

3 0
3 years ago
How much interest is included in the future value of an ordinary simple annuity of $1500 paid every six months at 7% compounded
crimeas [40]
Gdhdbdndhxidndndndndnd
7 0
3 years ago
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