why cant i understand this

Answer:

[tex]s=-9\pm8\sqrt{2}[/tex]

Step-by-step explanation:

[tex]s^2+18s=47\\\\s^2+18s-47=0\\\\s=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\ \\s=\frac{-18\pm\sqrt{(18)^2-4(1)(-47)}}{2(1)}\\ \\s=\frac{-18\pm\sqrt{324+188}}{2}\\\\s=\frac{-18\pm\sqrt{512}}{2}\\\\s=\frac{-18\pm16\sqrt{2}}{2}\\ \\s=-9\pm8\sqrt{2}[/tex]

This is all assuming that your problem is a quadratic equation

Answer:

671.96 or 214[tex]\pi[/tex]

Step-by-step explanation:

C=2[tex]\pi[/tex]*r

C=2[tex]\pi[/tex]*107

C=2*3.14*107

C=671.96

107*2=214

Answer: B. 8/100

      Let's give 5/10 a denominator of 100 since 58/100 does, so they have common denominators:

5/10 * 10 = 50/100

      Now, we can subtract 50/100 from 58/100 to find the unknown fraction:

58/100 - 50/100 = 8/100

      This gives us an answer of,

                   B. 8/100

Answer:

I think it is 343

Step-by-step explanation:

360-17=343

Answer:

Statement or Option A is correct.

Answer:

The student solved the equation correctly.

Given:

Multiplying y = 3x - 5 by 2:

               y = -6x - 5

               y = -6x - 5

Adding both equations:

Dividing 3 both sides:

Substitute the value of y into any equation.

Divide -6 both sides.

Given:

Add both the equations.

        y = -8x + 7

Divide 2 both sides.

Substitute the value of y into any equation.

Add 9 both sides.

Divide 8 both sides.

Given:

Reorganize the first equation.

Multiply the first equation by 5.

          y = -5x + 12

          y = -5x + 12

Add both the equations.

Divide 31 both sides.

Substitute the value of y into any equation.

Subtract 702/31 both sides.

Both f(x) and g(x) have the same range of [0,-infinity).

A function is an expression that shows the relationship between two or more numbers and variables.

Plotting the functions f(x) = 2x² – 3x + 5 and g(x) = 2ˣ - 5:

Both f(x) and g(x) have the same range of [0,-infinity).

Find out more on function at: https://brainly.com/question/25638609

Answer: A. Both f(x) and g(x) have the same domain of (9,-infinity).

Step-by-step explanation:

Answer:It has no rerealrealr solutions

Step-by-step explanation:

Answer:

So to find this answer we would do 36-8= 28 in

Step-by-step explanation:

If the tail is 8 in shorter than the body them that means is subtraction,

Hop this helps!

Answer:

25/6 pizzas are needed. (4 1/6)

Step-by-step explanation:

25 x 1/6 is 4 1/6

Answer:

$0.38

Step-by-step explanation:

Boxes of granola are on sale of 2 for 4. 50. There are 12 ounces of granola in each box. What is the unit price of dollars per pound?

4.5/12 = $0.38 per pound

The unit of each dollar per pound is $0.38

Hope this helps!

Answer:

B. Anaphase

Step-by-step explanation:

There is no possible way to explain this it is also not mathematics it's considered biology

Answer:

Bottom graph

Step-by-step explanation:

For the relation to be a function, its graph must pass the Vertical line test (each x value must only have 1 corresponding y value)

Answer: 7= 2+r

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

the equation of proportion is

y = kx ← k is the constant of proportion

y = [tex]\frac{3}{8}[/tex] x ← is in proportional form

Answer:

ok and u have to divide up that have it

Answer:

the answer is 96

Step-by-step explanation:

all you have to do is 8 times 12

Answer:

I do!

Step-by-step explanation:

10: It appears to be (6, 4.75)

11: It looks like (-4, -4)

You can desmos graphing calculator to check yourself, if you'd like!

I hope this helps!

Answer:

This question seems to be somewhat incomplete. Could you maybe provide some more details about the question? And could we also see your options? I would like to help but I need as much information as possible. Thanks!

a. What can you use to find the height of the pole?

solution: We can use Pythagoras theorem to find the height of the pole.

b. Write and solve a quadratic equation to find the height of the pole.

solution:

a² + b² = c²

[tex]\sf (x)^2 + (x-3)^2 = 15^2[/tex]

[tex]\sf x^2 + x^2 - 6x + 9 = 15^2[/tex]

[tex]\sf 2x^2 -6x + 9 = 225[/tex]

[tex]\sf 2x^2 -6x -216=0[/tex]

[tex]\sf 2x^2 -24x +18x -216 = 0[/tex]

[tex]\sf 2x(x-12)+18(x-12) = 0[/tex]

[tex]\sf (2x + 18)(x-12) = 0[/tex]

[tex]\sf x = 12, -9[/tex]

[tex]\sf x = 12[/tex]

height of the pole: 12 ft

c. How far is the hook from the base of the pole?

solution: (x-3) → (12-3) → 9

Answer:

21

Step-by-step explanation:

If the angles are supplementary, that means they add up to 180 degrees.

That means if we subtract 75 from 180, we get 105.

If we divide 105 by 5, we get 21.

That means 21 * 5 + 75 = 180

or

5(21) + 75 = 180

Hope this helps!

Answer:

P(A and 2) = 1/12, P(D and 1) = 1/8, P(A and not 2) = 1/6

Step-by-step explanation:

P(A and 2)

There is a 1/4 chance that you hit a when you spin the spinner. There is a 2/6 chance that you hit two when you spin the spinner. 1/4*2/6 = 2/24=1/12

P(D and 1)

There is a 1/4 chance that you hit d when you spin the spinner. There is a 3/6 chance that you hit one when you spin the spinner. 1/4*3/6=3/24=1/8.

P(A and not 2)

There is a 1/4 chance that you hit a when you spin the spinner. There is a 4/6 chance that you hit anything but two in the second spinner. 1/4*4/6=4/24=1/6

Answer:

55

Step-by-step explanation:

Given the following question:

[tex]c-8a[/tex]
[tex]c=7[/tex]
[tex]a=-6[/tex]

Substitute and solve by using PEMDAS:

[tex]c-8a[/tex]
[tex]7-8(-6)[/tex]
[tex]8\times-6=-48[/tex]
[tex]7--48[/tex]
[tex]7--48=55[/tex]
[tex]=55[/tex]

Your answer is "55."

Hope this helps.

Answer:

Slope is 6 and Y intercept is 4.. You can look the image above.

[tex]\longrightarrow \sf \: 14a^6b^{-4}[/tex]

[tex]\begin{gathered}\\\implies\quad \sf 7a^4b^{-5} \times2a^2b \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 7\times a^4\times b^{-5} \times2\times a^2\times b \\\end{gathered} [/tex]

Grouping the like terms

[tex]\begin{gathered}\\\implies\quad \sf (7\times2)\times (a^4\times a^2)\times(b^{-5} \times b )\\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 14\times a^{4+2}\times b^{-5+1} \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 14\times a^6\times b^{-4}\\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 14a^6b^{-4} \\\end{gathered} [/tex]