Please help me out!​

Answer:

66 gallons

Step-by-step explanation:

Given that initially 160 gallons of a solution containing 12% salt.

So, the initial amount of salt = 12% of 160 = 12/100 x 160 = 19.2 gallons.

Let x gallons of water get evaporated so that the remaining solution contains 20% salt.

The remaining amount of solution = 160-x gallons.

As the initial amount of salt is still in the solution which is equal to 20% of the remaining solution, so

19.2 = 20% of (160-x)

[tex]\Rightarrow 19.2 = \frac {20}{100}\times (160-x) \\\\\Rightarrow 19.2 = \frac {1}{5}\times (160-x) \\\\\Rightarrow 19.2 \times 5= 160-x \\\\\Rightarrow 96= 160-x \\\\\Rightarrow x= 160-96 \\\\[/tex]

[tex]\Rightarrow x= 66[/tex] gallons

Hence, 66 gallons of water must be evaporated to get a 20% salt solution.

Answer:

its A, "gallons of pure water"

Step-by-step explanation: just did it on edg and got it right

Answer:

Always True (infinite)

Step-by-step explanation:

If you try and isolate the x variable... you will end up with the equation 0 = 0

Any time you end up with the equation 0 = 0, there are an infinite number of solutions.

Assuming the trend continues, there will be 30 students on the 6th row of the bleachers.

According to the question,

We have the following details:

Number of students in 1st row = 10

Number of students in 2nd row = 14

Number of students in 3rd row = 18

Number of students in 4th row = 22

Now, if we carefully observe the arrangement made by the chorus teacher, we will observe that the arrangement has a pattern.

It is to be noted that with each row 4 students are increasing.

For example, in 2nd row the number of students is 14 (4 more than the previous row), in 3rd row the number of students is 18 (4 more than the previous row), etc.

Now, we have to find the number of students in 6th row. So, first we need to find the number of students in 5th row.

Number of students in 5th row = number of students in 4th row + 4

Number of students in 5th row = 22+4

Number of students in 5th row = 26

Now,

Number of students in 6th row = number of students in 5th row + 4

Number of students in 6th row = 26+4

Number of students in 6th row = 30

Hence, there are 30 students on the 6th row of the bleachers.

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Answer:

2

Step-by-step explanation:

Im pretty sure its 2 bc 5-7=2

i hope im right

Answer:

A. 79

B. 123

C. 63

D. 145

Step-by-step explanation:

A. 156 & 235

235 - 156 = 79

Distance is 79

B. -40 & 83

|-40| = 40 + 83

= 123

Distance is 123

C. -62 & -145

|-125| - |-62|

= 125 - 62

= 63

Distance is 63

D. 56 & -89

|-89| = 89 + 56

= 145

Distance is 145

Answer:

A. 79

B. 123

C. 63

D. 145

Step-by-step explanation:

Answer:

Wow that's hard to look at. But, when zooming in, we can see that the arrow is closer to 116 degrees, so that is the answer.

Step-by-step explanation:

Notice that the angle/arrows is opening up from right to left, so it will be greater than 90 degrees. The arrow is a little bit more than 115 degrees, so it has to be 116 degrees.

#teamtrees #WAP (Water And Plant)

Answer:

a = - 1

Step-by-step explanation:

Step 1:

6a + 5a = - 11        Equation

Step 2:

11a = - 11         Combine Like Terms

Step 3:

a = - 11 ÷ 11       Divide

Answer:

a = - 1

Hope This Helps :)

The solution to the equation 6a + 5a = -11 is a = -1.

We have,

To solve the equation 6a + 5a = -11, we can combine the like terms on the left side of the equation and then isolate the variable a.

Step 1: Combine like terms

On the left side, we have 6a + 5a, which gives us 11a. The equation becomes:

11a = -11

Step 2: Isolate the variable

To isolate variable a, we divide both sides of the equation by 11:

(11a) / 11 = (-11) / 11

a = -1

Therefore,

The solution to the equation 6a + 5a = -11 is a = -1.

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Answer:

1.6 mph

Step-by-step explanation:

I did the math

Answer:

the answer would be option C. I just took the quiz

Step-by-step explanation:

i took the test!!!!!

Answer:

B

Step-by-step explanation:

Given

x² + 3x - 5 - (4x² + 3x - 6) ← distribute parenthesis by - 1

= x² + 3x - 5 - 4x² - 3x + 6 ← collect like terms

= - 3x² + 1 → B

Answer:

I believe it would be the first option

Answer:48.6

we know that

You can paint 75 square feet of a surface every 45 minutes

so

using proportion  

Find out how long it takes you to paint a surface area of 81 square feet

45(81)/75=48.6

hope this helped and I hope you get a correct answer :D

Answer:

48.6 minutes

Step-by-step explanation:

First we must identify the area of the given wall :

A = L * W

A = 9 * 9

81 = 9 * 9

[tex]81ft^2[/tex]

Now we know that we can paint 75 square feet every 45 minutes so we must use proportion to find out how long it'll take you.

[tex]\frac{75}{45} *\frac{ft^2}{min}[/tex]

=

[tex]\frac{81}{x}[/tex] [tex]\frac{ft^2}{min}[/tex]

x = 45(81) / 75

x = 3645 / 75

x = 48.6 minutes

Answer:

?

Step-by-step explanation:

Answer:

A) x=8 and angle ABC=115 degrees

Step-by-step explanation:

the lines are parallel, meaning the angles are congruent.

you can set up the equation (15x-5)=(10x+35) and simplify.

1. separate variable by subtracting 10x on both sides to get (5x-5)=(35)

2. add 5 on both sides to get 5x=40

3. divide both sides by 5 to get x=8

4. plug x=8 into original function (10x+35) to get (10(8)+35) which equals 115 degrees

Answer:

(x-5)²=98/2

x-5=√98/2

98/2=49

x-5=√49

= 7

x= 5 ± 7

= 12,-2

ans is C

Answer:

17,5

Step-by-step explanation:

1.your child will become a nervous person and develop anxiety being over controlling will put their mind in a small cage in which they can barely move

2.the choice to use parental controls undermines the trust in your relationship with your child and it reduces your child's opportunity to make smart choices and to take responsibility for the actions they choose

3. your child will most likely reveal and still find ways to look at things you have blocked rebelling against the world isn't the same as rebelling against your parents rebelling against the system isn't the same as rebelling against household rules children need a certain level of Freedom if you try to control every aspect of their lives they'll reclaim their autonomy more and more forcefully and probably Less Reasonable

4.you'll discourage their creativity if you constantly control what your child doesn't turn them into your Shadow they'll probably be less created as a result

Answer:

5 like terms

4, -10, and 12 are like terms

3x and -1/2x are like terms

Use the Pythagorean theorem:

70^2 = 42^2 + width^2

4900 = 1764 + width ^2

Subtract 1764 from both sides

3136 = width^2

Take the square root of both sides

Width = 56 inches

hi

11x+15=10x+20

11x-10x= 20-15

    x= 5

Answer:

1) Infinitely many solutions.

2) No real solutions.

3) (-1, 2)

Step-by-step explanation:

The solutions of a system of linear equations is whenever the two lines intersect.

However, if the two lines never intersect (they are parallel), then there are no solutions.

And if the two lines are the same line, then there are infinitely many solutions.

First Graph:

The two lines are exactly the same.

Hence, there are infinitely many solutions.

Second Graph:

The two lines are parallel. They will never intersect each other.

Therefore, there are no real solutions.

Third Graph:

The two lines intersect at the point (-1, 2).

Hence, there is only one solution and it is (-1, 2).

Answer:

-7b - 9k + 6

General Formulas and Concepts:

Alg I

Step-by-step explanation:

Step 1: Define expression

-4b + (-9k) - 6 - 3b + 12

Step 2: Simplify

Answer:

It's true!

Step-by-step explanation:

I hope I helped!

Answer:

False because they are congruent

Step-by-step explanation:

Answer:

y = 12  when x = 6/7.

Unless you give a formula (function, or equation) that specifies their relationship, one cannot find x when y equals something else.

Step-by-step explanation:

Answer:

The midpoint would be (-3, 1)

Step-by-step explanation:

since the formula for midpoint is [tex](\frac{x^{1} +x^{2} }{2}, \frac{y^{1} +y^{2} }{2} )[/tex], you would just have to plug in the coordinates given on the graph. I think your points are (-1, 4) and (-5, -2).

[tex](\frac{-1 -5}{2}, \frac{4-2}{2} )[/tex]

[tex](\frac{-6}{2}, \frac{2}{2} )[/tex]

If you simplify, then you should get (-3, 1)!

Answer:

21

Step-by-step explanation:

[tex]\frac{x}{14} =\frac{3}{2} \\x=\frac{3}{2} \times 14=21[/tex]

Answer:21 cars to 14 trucks

Step-by-step explanation:

Answer:

Population in 1950 was 4,100,000

Step-by-step explanation:

Equation: 5x + 2,000,000 = 22,500,000

Subtract 2,000,000 from each side: 5x = 20,500,000

Divide each side by 5: x = 4,100,000

I hope this helps, please mark Brainliest, thank you!

Answer:

-28/9

Step-by-step explanation:

2 1/7= 15/7

3/7* 3= 9/7

3/7*5= 15/7

15/7 + 9/7x - 15/7=-4

9/7x=-4

x=-28/9

Answer:

The slope is: -4/3

Step-by-step explanation: