PLEASE HELP 9) (6 pts.) The perimeter of a rectangle is 100 feet. The length is 10 more than 3 times the width. Define variables and write a system of equations that could be used to find the length and width of the rectangle. For this problem you are NOT being asked to solve the system, just to set it up.​

Answer:

4√2 = 5.657

9 - 5.657 = 3.343

√3.343 = 1.828

2√2 = 2.828

1.828 - 2.828 = -1

Answer:

I also got -1 doing it on my calculator

Step-by-step explanation:

i first converted it to exponent form to get rid of the radical

      (9 - 4(2)^1/2 )^1/2  - 2(2)^1/2            solve inside the first parenthsis

      (9 - 4(1.414)^1/2  - 2(2)^1/2              

      (9 - 5.656)^1/2  - 2(2)^1/2                √2 times 4

      (3.343)^1/2  - 2(2)^1/2                     9 - √2 times 4

      1.828  - 2(2)^1/2                             √(9 - √2 times 4)

      1.828  - 2(1.414)                     √(9 - √2 times 4) - 2√2

      1.828  - 2.828                       √(9 - √2 times 4) - 2√2

      -1

Answer:

No Duwan is in incorrect.

Step-by-step explanation:

When it asks for a number to be 10x greater, the answer would be in a digit that is 1 greater. For example 10x greater than 10 would be 100. You move the digit up once. An answer that Duwan could have used is: 260,000.

Answer:

40

Step-by-step explanation:

5-2(3+9)+4

5-2(12)+4

3(12)+4

36+4

40

Answer:

the answer is 29.7

Step-by-step explanation:

inverse tangent of (4/7)

Answer:

I dont know can u explaining more

Step-by-step explanation:

its not clear too much

Answer:

Diagonal length = 8.59

Step-by-step explanation:

To find the diagonal length, we need the length of the sides. We find the length of the sides by finding the square root of 36, which is 6. Then, we use this equation (see attached image)

Answer:

D saving

Step-by-step explanation:

Answer:

[tex]y=-5x+7[/tex]

Answer:

The copy machine makes 32 copies per minute.

Step-by-step explanation:

Given that a copy machine makes 136 copies in 4 minutes and 15 seconds, to determine how many copies does it make per minute, the following calculation must be performed:

15 seconds = 0.25 minutes

136 / 4.25 = X

32 = X

Therefore, the copy machine makes 32 copies per minute.

Answer:

3

Step-by-step explanation:

Answer:

The approximate length of the missing side is of 5.57 cm.

Step-by-step explanation:

Pythagorean Theorem:

In a right triangle with sides a and b and hypotenuse c, the Pythagorean theorem states that:

[tex]a^2 + b^2 = c^2[/tex]

In this question:

[tex]a = 15, c = 16[/tex]

We want to find b. Then

[tex]a^2 + b^2 = c^2[/tex]

[tex]15^2 + b^2 = 16^2[/tex]

[tex]b^2 = 256 - 225[/tex]

[tex]b^2 = 31[/tex]

[tex]b = \sqrt{31}[/tex]

[tex]b = 5.57[/tex]

The approximate length of the missing side is of 5.57 cm.

Answer:

the answer is 8

Step-by-step explanation:

the expression is written as (n/2 - 6)+ 10

therefore when n=8..

(8/2 - 6) + 10

we now have, (4-6)+10

(-2)+10=8...

Answer:

D Not similar

Step-by-step explanation:

For similar triangles the sides are always in proportions.

Here two sides are in proportion but third side isn't. So triangles are not similar.

Answer:

[tex]a = \frac{1}{134217728}[/tex]

Step-by-step explanation:

Given

[tex]8^x = a^{-x/9}[/tex]

Required

Find a

Take log of both sides

[tex]log(8^x) = log(a^{-x/9})[/tex]

Apply law of logarithm

[tex]x\ log(8) = (-x/9) log(a)[/tex]

Divide both sides by a

[tex]log(8) = -\frac{1}{9} log(a)[/tex]

Multiply both sides by -9

[tex]-9\ log(8) = log(a)[/tex]

Apply law of logarithm

[tex]log(8^{-9}) = log(a)[/tex]

Cancel out log

[tex]8^{-9} = a[/tex]

Rewrite as:

[tex]a = 8^{-9}[/tex]

Apply law of indices

[tex]a = \frac{1}{8^9}[/tex]

[tex]a = \frac{1}{134217728}[/tex]

9514 1404 393

Answer:

  x = {2π/3, 4π/3}

Step-by-step explanation:

The equation can be factored as ...

  (cos(x) +3)(2cos(x) +1) = 0

The solutions are the values of x where the factors are zero.

  cos(x) +3 = 0

  cos(x) = -3 . . . . . . no real solution

__

  2cos(x) +1 = 0

  cos(x) = -1/2

  x = arccos(-1/2) = 2π/3

The other solution in the desired interval is ...

  x = 2π -(2π/3) = 4π/3

The solutions are x∈ {2π/3, 4π/3}.

Answer:

Step-by-step explanation:

uhh i dont know much... can you explain it to me easier?

Answer:

responder dejar de engañar a idiota

Step-by-step explanation:

Answer:

-25p

Step-by-step explanation:

Answer:

$402

Step-by-step explanation:

Interest = principal x rate x time

I = 1500 x .268

I = $402

Answer:

C. 7 * n

Step-by-step explanation:

Answer:

Pyramid on the left

Step-by-step explanation:

It has bigger measurements and looks much bigger and wider than the one on the right.

Answer:

a) $39+8x<75$, b) no, c) at most 4 pairs

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

trust me i am did the test aredy

Answer:

28° 62°

Step-by-step explanation:

Hope this helps :)

Answer:

43.65 cm squared

Step-by-step explanation:

Answer:

0.06493506 is the answer

9514 1404 393

Answer:

 46 yd

Step-by-step explanation:

The sum of horizontal lengths across the top is 8+6 = 14 yd. The length across the bottom is the same, so the total of horizontal lengths is

  14 yd +14 yd = 28 yd

The sum of vertical lengths at the right is the same as the sum of vertical lengths at the left, 9 yd, so the total of vertical lengths is ...

  9 yd + 9 yd = 18 yd

The total of all lengths around the perimeter of the figure is ...

  28 yd + 18 yd = 46 yd