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Ilya [14]
4 years ago
11

Solution A is 30% alcohol and solution B is 60% alcohol. How much of each is needed to make 80 liters of a solution that is 45%

alcohol?
Mathematics
1 answer:
postnew [5]4 years ago
7 0
We need 80 liters of 45% alcohol
We have 30% alcohol and 60% alcohol.
This is relatively easy.  We need equal amounts of each.
There fore we mix 40 liters of 30% alcohol and 40 liters of 60% alcohol.

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Drag each equation to show if it could be a correct first step to solving the equation
Ipatiy [6.2K]

Answer:

3 + 4x = 36----->No

(4.3)+(4 . x)= 36------>Yes

4(3 + x)= 144--------->No

3+ x = 9-------> Yes

12 + x = 36------>No

12 + 4x = 36------->Yes

Step-by-step explanation:

The given equation is

4(3 + x) = 36

A correct first step is to expand the LHS to get:

12 + 4x = 36

Or to divide through by 4 to get:

3 + x = 9

Or just distribute to get:

4 \cdot 3 + 4 \cdot \: x = 36

6 0
3 years ago
Write an equation in slope-intercept form for the line that passes through the given point and is perpendicular to the graph of
miss Akunina [59]
So first. You need to convert to y = mx + b form, so to do that, subtract 5x from both sides, and you will have -6y = -5x + 9
Next, you need to divide by -6, and you get y = 5/6x + 1.5
Its good to note that for finding an equation that is perpendicular to that that equation, the slope is the opposite reciprocal. So, for the slope of your new line it is -6/5x.
So slope intercept form is y-y1 = m(x - x1) so to plug that in with the coordinates (-3, 5) you would have y - (-3) = -6/5(x - 5)
Then add the opposite and do the distributive property on the right side of the equation, so its y + 3 = -6/5x + 6
Then you would solve for y so subtract 3 and you end up with:
y = -6/5x + 3
5 0
4 years ago
Please help ASAP!! I really need help!! thanks and god bless!
Artyom0805 [142]

Answer:

Figure ABC is congruent to figure A’B’C’.

Step-by-step explanation:

Any figure transformed by a rigid transformation is congruent

3 0
3 years ago
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EleoNora [17]

Answer:

384

Step-by-step explanation:

Triangle sides: 12x10/2. Then multiply by four to get all four sides.

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Add together, get 384.

4 0
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Savatey [412]

Answer: I believe the correct answer is option D.

7 0
3 years ago
Read 2 more answers
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