15. Before oil is added to a certain road surface material, the other ingredients are mixed. The mixture contains
45% 3/4 inch stone and 32% % inch stone. The balance of the mixture is made up of sand. If the mixture weighs
15,000 pounds before the oil is added, how many pounds of each ingredient are in the mixture?

Answer: A

Hope this helps :)

Answer:

A

Step-by-step explanation:

Answer:

please be more specific

Answer:

x= -7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

2x+11=x+4

Step 2: Subtract x from both sides.

2x+11−x=x+4−x

x+11=4

Step 3: Subtract 11 from both sides.

x+11−11=4−11

x=−7

Answer:

x=10

Step-by-step explanation:

A straight line has an angle of 180 degrees. To solve for x we can add all the given angles and set them equal to 180.

[tex]180= 5x-1+9x+8+2x+13[/tex]

Then combine all the common factors

[tex]180=16x+20[/tex]

And then you can solve for x

[tex]180= 16x+20\\160=16x\\10=x[/tex]

To check if x is correct you can plug in 10 to each equation. If all the equations add up to 180, then x is correct

[tex]5(10)-1= 49\\9(10)+8= 98\\2(10)+13= 33\\\\49+98+33=180[/tex]

Answer:

Step-by-step explanation:

ratio and proportion:

28 photos    =    21  photos

8 min                     x min.

21 (8) = 28 (x)

x = 168 / 28

x = 6 min.

Answer:

I think in 49 ways by changing each other

Answer:

1/72=x (part a)

1/70=x (bart b)

Step-by-step explanation:

Divide 1 by 72 for part a, and divide 1 by 70 for part b.

Answer:

the answer is x= -1

Step-by-step explanation:

I know this because 72x-1 is the same as 72 divided by 1 which is 1

The solutions to the system of equations are (2, -1) and (-2,3)

The equations are given as:

[tex](x - 2)^2 + (y - 3)^2 = 16[/tex]

x  + y - 1 = 0

Make y the subject in x  + y - 1 = 0

y = 1 - x

Substitute y = 1 - x in [tex](x - 2)^2 + (y - 3)^2 = 16[/tex]

[tex](x - 2)^2 + (1 - x - 3)^2 = 16[/tex]

Evaluate

[tex](x - 2)^2 + (-x - 2)^2 = 16[/tex]

Expand the equations

[tex]x^2 - 4x + 4 + x^2 + 4x + 4 = 16[/tex]

Evaluate the like terms

[tex]2x^2 + 8 = 16[/tex]

Subtract 8 from both sides

[tex]2x^2 = 8[/tex]

Divide by 2

[tex]x^2 = 4[/tex]

Take the square roots of both sides

x = ±2

Substitute x = ±2 in y = 1 - x

y = 1 - 2 = -1

y = 1 + 2 = 3

Hence, the solutions to the system of equations are (2, -1) and (-2,3)

Read more about system of equations at:

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Answer:

Step-by-step explanation:

As first step we must obtain the equation of the line. According to Analytical Geometry, we can get a equation of the line by knowing two different points. A linear function is represented by the following expression:

[tex]y = m\cdot x + b[/tex]

Where:

[tex]x[/tex] - Independent variable, dimensionless.

[tex]y[/tex] - Dependent variable, dimensionless.

[tex]m[/tex] - Slope, dimensionless.

[tex]b[/tex] - y-Intercept, dimensionless.

If we know that [tex](x_{1}, y_{1}) = (0, 5)[/tex] and [tex](x_{2}, y_{2}) = (3, 8)[/tex], the following system of linear equations is formed:

[tex]5 = 0\cdot m + b[/tex]

[tex]b = 5[/tex] (Eq. 1)

[tex]8 = 3\cdot m + b[/tex]

[tex]3\cdot m + b = 8[/tex] (Eq. 2)

From (Eq. 1) in (Eq. 2) we get the value of [tex]m[/tex]:

[tex]3\cdot m + 5 = 8[/tex]

[tex]3\cdot m = 3[/tex]

[tex]m = 1[/tex]

The equation of the line that contains the points (0, 5) and (3, 8) is [tex]f(x) = x + 5[/tex].

As next step we must apply a reflection in the x-axis, whose operation is defined as follows:

[tex](x', y') \longrightarrow (x, -y)[/tex]

That is:

[tex]x' = x[/tex]

[tex]y' = -y[/tex]

Then, the function [tex]g(x)[/tex] is [tex]g(x) = -x-5[/tex]. We plot each function and include the result in the attachment below.

Answer:

16 weeks

Step-by-step explanation:

just took test today hope this help mark me as brailist and add me

Answer:

16 weeks

Step-by-step explanation:

[tex]y = -27x + 577[/tex]

Since y represents the amount of money left in her account, we can replace it with $145 to solve for x (number of weeks)

[tex]145=-27x+577[/tex]

Switch sides:

[tex]-27x+577=145[/tex]

Subtract 577 from both sides:

[tex]-27x+577-577=145-577\\[/tex]

[tex]-27x=-432[/tex]

Divide both sides by -27:

[tex]\frac{-27x}{-27}=\frac{-432}{-27}[/tex]

[tex]x=16[/tex]

After 16 weeks, Alma will have $145 left in her account.

Step-by-step explanation:

The slope of the perpendicular line is the opposite inverse.  So the student should have used -1/4 as the slope of the perpendicular line, not 1/4.

Answer:

It's A.

Step-by-step explanation:

Answer:

y = 9 (x + one-half) squared minus thirteen-fourths

Step-by-step explanation:

i hope

Answer:

a (9 - 8 a x)

Step-by-step explanation:

Simplify the following:

3 a - 2 a x×4 a + 6 a

-2 a x×4 a = -2 a^2 x×4:

3 a + -2 a^2 x×4 + 6 a

-2×4 = -8:

3 a + -8 a^2 x + 6 a

Grouping like terms, 3 a - 8 a^2 x + 6 a = -8 a^2 x + (3 a + 6 a):

-8 a^2 x + (3 a + 6 a)

3 a + 6 a = 9 a:

-8 a^2 x + 9 a

Factor a out of -8 a^2 x + 9 a:

Answer: a (9 - 8 a x)

The expression that is equivalent to [tex]3a - 2ax \times 4a +6a[/tex] is: [tex]\mathbf{a(9 - 8ax)}[/tex]

Given the expression:

[tex]3a - 2ax \times 4a +6a[/tex]

To find an expression that is equivalent to the above expression, we will need to simplify the expression.

[tex]3a - 2ax \times 4a + 6a\\\\3a - 8a^2x + 6a[/tex]

[tex]3a + 6a - 8a^2x\\\\9a - 8a^2x[/tex]

Simplify the expression further by factoring out

[tex]a(9 - 8ax)[/tex]

Therefore, the expression that is equivalent to [tex]3a - 2a \times 4a +6a[/tex] is [tex]\mathbf{a(9 - 8ax)}[/tex]

Learn more here:

https://brainly.com/question/11033026

Step-by-step explanation:

Angles DE and AB are alternate angles, they have the same angle values :)

Here is the equation: (6x-12)+(7x+1)= 10x+25

Solve:

13x-11=10x+25

3x=36

x=12

Hope this helps :)

Answer:

the answer is going to be x=12

Answer:

3,835,181

Step-by-step explanation:

Answer:

The answer would be A,  3,835,181

Step-by-step explanation:    I did the test, do you do schoology?

Answer:

h(6) = 32

Step-by-step explanation:

h (x) = x^2 – 4

h(6) =

Let x = 6

h (6) = 6^2 – 4

       = 36 -4

       = 32

Answer:

water based

Step-by-step explanation:

trust

Answer:

He had 499 + 56 = 555

Step-by-step explanation:

Answer:

Kyle had $555 before preordering his PlayStation 5.

Step-by-step explanation: If Kyle spent $499, and has $56 left, you add the two values together. 499+56= 555. Therefore, Kyle had $555 before preordering his PlayStation.

Answer:

Step-by-step explanation:

[tex]6( (5)-(7) )\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:within\:parentheses}\:\left(\left(5\right)-\left(7\right)\right)\:\\:\quad -2\\\\=6\left(-2\right)\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:6\left(-2\right)\:\\:\quad -12\\\\=-12[/tex]

Answer:

if you are multiplying the 2 and the 32, the answer would be -41

Step-by-step explanation:

hope this helps! :) :) :) (please give me brainliest!)

Answer:

- 41

Step-by-step explanation:

10 - 2 · 32 + 13

Multiply first because of PEMDAS

10 - 64 + 13

- 54 + 13

- 41

-----------------------------------------------------------------------------

If that's not the answer you wanted, you might have forgot to type in the parenthesis.

Hope this helped!!!

Answer:

1st 3rd and 4th

Step-by-step explanation:

I just did that

Answer:

x=15

Step-by-step explanation:

15-9=6

Answer:

x=15

Step-by-step explanation:

6+9=15

Answer:10

Step-by-step explanation:

Answer:

N = 6

Step-by-step explanation:

7 + N = 13

subtract 7 from both sides

N = 6

hope this helps

Hi!

Your answer will be: N=6

Reason being: 7+6=13

Therefore, the answer is 6.

Hope this helps!

Let me know if you need anymore help, I'd be delighted to!

Yours truly,

Answer:

[tex] x = \pm\sqrt{y + 12}[/tex]

Step-by-step explanation:

[tex]y = {x}^{2} - 12 \\ y + 12 = {x}^{2} \\ \pm\sqrt{y + 12} = x \\ x = \pm\sqrt{y + 12} \\ is \: the \: required \: inverse \: function[/tex]

The inverse of the function is given by y = ± √( x² - 12 )

The function rule is the relationship between the input or domain and the output or range. A relation is a function if and only if there exists one value in the range for every domain value.

A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.

Given data ,

Let the function be represented as A

Now , the value of A is

y = x² - 12   be equation (1)

On simplifying , we get

To calculate the inverse of the function ,

Interchange the value of x with y , we get

x = y² - 12

On solving for y , we get

y² = x + 12

Taking square roots on both sides , we get

y = ± √( x² - 12 )

Hence , the inverse of the function is y = ± √( x² - 12 )

To learn more about function rule click :

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Answer:

3/7 ÷ 2/3 = 9/14

Step-by-step explanation:

When we divide two fractions, such as 3/7 ÷ 2/3, we flip the second fraction and then we simply multiply the numerators with each other and the denominator with each other.

Answer:

option A is the correct answer.

Step-by-step explanation:

Answer:

the answer is A

Step-by-step explanation:

i took a test and that was right

answer:

a=c/x-b

Step-by-step explanation:

ax+b=c isolate a

a+b=c/x divide b on both sides

a=c/x-b subtract b on both sides