Evaluate the expression when a=-4 and x=4

7a-x

Answer:This is a linear equation.

y = mx+b

y is the total cost.

The slope m is the rate: that's 9 dollars per hour.

x is the number of hours.

b is the initial value: that's 16 dollars.

y = 9x+16

The problem states that the cost was 79 dollars.

Substitute that for y and solve for x.

79 = 9x+16

63 = 9x

x = 7 hour

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

80-17=63

63/7  = 9

7 times 9 = 63

Answer:

10.5

Step-by-step explanation:

3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5

Answer:

11

Step-by-step explanation:

assumind we start from 3, the pattern goes that you add .5 each time

so, 3+0.5x

x=16

3+8=11

Answer:

It has a slope of 0

m-0

Step-by-step explanation:

Answer:

dang, if i had to guess, just add your numbers then divide.

Step-by-step explanation:

Answer:

5j+10

Step-by-step explanation:

In this question, you cannot find the answer to j, so you would just be simplifying the equation. So you would break the equation up into different parts and put the like parts together. So that it would be: (2j+3j)+(5+5)

5+5=10. So the answer is: 5j+10

Answer:

r = 8.2mm

d = 816.4mm

Step-by-step explanation:

Let the soap be spherical in nature

Volume of a sphere = 4/3 πr³

r is the radius

Given that V = 2308.4mm^3

Substitute

2308.4 = 4/3 πr³

2308 = 4/3 (3.14)r³

2308.4 * 3 = 12.56r³

6,925.2 = 12.56r³

r³ = 6,925.2 /12.56

r³ = 551.37

r = 8.2mm

diameter = 2r

diameter = 2(8.2)

diameter = 16.4mm

Answer:

[tex](\frac{3}{2},102)[/tex]

Step-by-step explanation:

Given

[tex]f(x)=88x^2-264x+300[/tex] --- Missing from the question

Required

The symmetry

First, we express f(x) as: [tex]f(x) = a(x - h)^2 + k[/tex]

Where the symmetry is: (h, y) and x = h

Equate f(x) to 0

[tex]88x^2-264x+300 = 0[/tex]

Subtract 300 from both sides

[tex]88x^2-264x+300 - 300= 0 - 300[/tex]

[tex]88x^2 - 264x= - 300[/tex]

Factorize

[tex]88(x^2 - 3x) = -300[/tex]

On the left-hand side, the coefficient of x is -3.

Divide by 2 and add the square to both sides.

So, we have:

[tex]88(x^2 - 3x) + (\frac{3}{2})^2 = -300 + (\frac{3}{2})^2[/tex]

Multiply the new terms by 88 (to make it factorizable)

[tex]88(x^2 - 3x ) +88* (\frac{3}{2})^2 = -300 + 88 * (\frac{3}{2})^2[/tex]

Factorize

[tex]88(x^2 - 3x + (\frac{3}{2})^2) = -300 + 88 * (\frac{3}{2})^2[/tex]

The quadratic expression in the bracket is a perfect square. This gives:

[tex]88(x - \frac{3}{2})^2 = -300 + 88 * (\frac{3}{2})^2[/tex]

[tex]88(x - \frac{3}{2})^2 = -300 + 88 * \frac{9}{4}[/tex]

[tex]88(x - \frac{3}{2})^2 = -300 + 22 * 9[/tex]

[tex]88(x - \frac{3}{2})^2 = -102[/tex]

Add 102 to both sides

[tex]88(x - \frac{3}{2})^2 +102= -102 + 102[/tex]

[tex]88(x - \frac{3}{2})^2 +102= 0[/tex]

Equate to y

[tex]y = 88(x - \frac{3}{2})^2 +102[/tex]

Recall that:

The symmetry is: (h, y)

By comparison with [tex]f(x) = a(x - h)^2 + k[/tex] and x = h

[tex]h = \frac{3}{2}[/tex]

So: [tex]x = \frac{3}{2}[/tex]

Substitute [tex]x = \frac{3}{2}[/tex] in [tex]y = 88(x - \frac{3}{2})^2 +102[/tex]

[tex]y = 88(\frac{3}{2} - \frac{3}{2})^2 +102[/tex]

[tex]y = 88(0)^2 +102[/tex]

[tex]y = 0 +102[/tex]

[tex]y = 102[/tex]

So, the symmetry is: [tex](\frac{3}{2},102)[/tex]

Answer: A ratio is one thing or value compared with or related to another thing or value; it is just a statement or an expression, and can only perhaps be simplified or reduced. On the other hand, a proportion is two ratios which have been set equal to each other; a proportion is an equation that can be solved.

Step-by-step explanation: looked it upp

9514 1404 393

Answer:

  B.  39°, 106°, 43°

Step-by-step explanation:

The sum of angle measures in a triangle is 180°. Then the sum of angle expressions will be 180.

  (3x +1) +(11x -4) +(5x -7) = 180

  19x -10 = 180 . . . . . collect terms

  19x = 190 . . . . . . . . add 10

  x = 10 . . . . . . . . . . . divide by 19

__

Then the three angle measures are ...

The appropriate choice is ...

  B.  31°, 106°, 43°

Answer:

77

Step-by-step explanation:

i think it is A. P(5<X<9)

Answer:

C

Step-by-step explanation:

Answer:

<

Step-by-step explanation:

Answer:

Letter D! That's the answer

Answer:

C. y = 4

Step-by-step explanation:

[tex] \sin \: 30 \degree = \frac{y}{8} \\ \\ \frac{1}{2} = \frac{y}{8} \\ \\ y = \frac{8}{2} \\ \\ y = 4[/tex]

Answer:

the experimental probability is based on the results of the experiment which yielded heads 1 out of 6 times; in theory, the results of flipping a coin and landing on heads would be 1 out of 2

Step-by-step explanation:

Answer:

10)

180-3x =x (corresponding angles are equal)

x=45°

11)180-5x=3x ( same reason)

x=10°

12)180-6x=3x(same reason)

x=20°

Answer: See explanation

Step-by-step explanation:

10) Same side interior angles add up to 180°

3x + x = 180

4x = 180

x = 45

11) Same side interior angles add up to 180°

5x + 3x = 180

8x = 180

x = 22.5

12) 6x is vertical to an angle that has a relationship with 3x (same side interior angles) which means 6x and 3x have to add up to 180° as well

6x + 3x = 180

9x = 180

x = 20

Answer:

Rotaded areound the orgin counter clockwise 90 degrees

Answer:

Kindly check explanation

Step-by-step explanation:

If Brooke multiplied 3 by 9 and obtained 17 ; then Brooke is definitely wrong

3 * 9 = exactly 27

However, for approximation sake ;

We could round 9 to 10 ; and multiply 10 by 3

10 * 3 = 30 ; this gives an approximate solution for the multiplication problem ;

3 * 9 = exactly 27 or approximately 30

Answer:

See bolded below

Step-by-step explanation:

1. First solve the inequality:

2|3-4x|+5>4 [subtract 5 from both sides]

2|3-4x| > - 1 [divide both sides by 2]

|3-4x| > - 1/2

Since all absolute values are always greater than or equal to 0, the solution would be: All Solutions. Respectively in interval notation we have (- ∞, ∞)

2. Start by solving the equation:

|2-3x|=|x-3|,

2-3x = x-3, 2-3x = -(x - 3)

x = 1.25, x = -0.5

In set builder notation: { x | x ∈ {1.25, -0.5} }

Answer:

o dpB

Step-by-step explanation:

Answer:

wheres the statements...?

Step-by-step explanation:

Answer:

Yes

No

Yes

No

Yes

No