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melomori [17]
2 years ago
13

PLEASE HELP ASAP

Mathematics
2 answers:
irinina [24]2 years ago
8 0

Answer:

A rate is a comparison, or ratio, of two quantities with different units. For example, a store sells

3 T-shirts for $15. The comparison $15 to 3 T-shirts is a rate. This rate can also be written as $15 _______

3 T-shirts.

When a rate compares a quantity to one unit of another quantity, the rate is a unit rate.

The rate $15 _______

3 T-shirts is not a unit rate because the rate compares the cost to more than one T-shirt. In a unit

rate, the second quantity (or denominator) should be 1 unit.

A speed limit is a unit rate. For example, the speed limit of 55 miles per hour compares the distance to

1 hour. A speed of 55 miles per hour is equivalent to traveling 55 miles in each 1-hour time span. This rate can also be written as 55 miles/1 hour

Step-by-step explanation:

OverLord2011 [107]2 years ago
4 0

Answer:

A rate is a comparison, or ratio, of two quantities with different units. For example, a store sells

3 T-shirts for $15. The comparison $15 to 3 T-shirts is a rate. This rate can also be written as $15 _______

3 T-shirts.

When a rate compares a quantity to one unit of another quantity, the rate is a unit rate.

The rate $15 _______

3 T-shirts is not a unit rate because the rate compares the cost to more than one T-shirt. In a unit

Step-by-step explanation:

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Simplify this answer.......
Zinaida [17]
x to the power of 7 reduce the index of the radical and exponent with 2
6 0
4 years ago
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Mathematics need help with this paper
Ne4ueva [31]

Answer:

5. x = 39°

6. x = 46°

7. x = 24°

8. x = 19°

Step-by-step explanation:

5.

Base angles are the same due to it being an isosceles triangle

Sum of angles in triangle = 180°

  • 2x + 2x + (x - 15) = 180
  • 4x + x - 15 = 180
  • 5x - 15 = 180
  • 5x = 195
  • x = 39

6.

Angle VZW and XZW are supplementary, meaning that they add up to 180°

  • 3x + 17 + (x - 9) = 180
  • 3x + 17 + x - 9 = 180
  • 4x + 8 = 180
  • 4x = 184
  • x = 46°

7.

Sum of angles in a straight line add up to 180°

  • (2x - 4) + (3x + 5) + (2x + 11) = 180
  • 2x - 4 + 3x + 5 + 2x + 11 = 180
  • 7x + 12 = 180
  • 7x = 168
  • x = 24

8.

All angles add up to 90°

  • x + (x + 4) + (3x - 9) = 90
  • x + x + 4 + 3x - 9 = 90
  • 5x - 5 = 90
  • 5x = 95
  • x = 19

-Chetan K

5 0
3 years ago
Need some help please (WILL MARK YOU BRAINIEST)
Ulleksa [173]
(z^4)(z^4) = z^(4+4) = z^8 (these 3 expressions are equivalent).
7 0
3 years ago
Read 2 more answers
1. Write the form of the partial fraction decomposition of the rational expression. Do not solve for the constants.
german

Answer:

Step-by-step explanation:

1.

To write the form of the partial fraction decomposition of the rational expression:

We have:

\mathbf{\dfrac{8x-4}{x(x^2+1)^2}= \dfrac{A}{x}+\dfrac{Bx+C}{x^2+1}+\dfrac{Dx+E}{(x^2+1)^2}}

2.

Using partial fraction decomposition to find the definite integral of:

\dfrac{2x^3-16x^2-39x+20}{x^2-8x-20}dx

By using the long division method; we have:

x^2-8x-20 | \dfrac{2x}{2x^3-16x^2-39x+20 }

                  - 2x^3 -16x^2-40x

                 <u>                                         </u>

                                            x+ 20

So;

\dfrac{2x^3-16x^2-39x+20}{x^2-8x-20}= 2x+\dfrac{x+20}{x^2-8x-20}

By using partial fraction decomposition:

\dfrac{x+20}{(x-10)(x+2)}= \dfrac{A}{x-10}+\dfrac{B}{x+2}

                         = \dfrac{A(x+2)+B(x-10)}{(x-10)(x+2)}

x + 20 = A(x + 2) + B(x - 10)

x + 20 = (A + B)x + (2A - 10B)

Now;  we have to relate like terms on both sides; we have:

A + B = 1   ;   2A - 10 B = 20

By solvong the expressions above; we have:

A = \dfrac{5}{2}     B =  \dfrac{3}{2}

Now;

\dfrac{x+20}{(x-10)(x+2)} = \dfrac{5}{2(x-10)} + \dfrac{3}{2(x+2)}

Thus;

\dfrac{2x^3-16x^2-39x+20}{x^2-8x-20}= 2x + \dfrac{5}{2(x-10)}+ \dfrac{3}{2(x+2)}

Now; the integral is:

\int \dfrac{2x^3-16x^2-39x+20}{x^2-8x-20} \ dx =  \int \begin {bmatrix} 2x + \dfrac{5}{2(x-10)}+ \dfrac{3}{2(x+2)} \end {bmatrix} \ dx

\mathbf{\int \dfrac{2x^3-16x^2-39x+20}{x^2-8x-20} \ dx =  x^2 + \dfrac{5}{2}In | x-10|\dfrac{3}{2} In |x+2|+C}

3. Due to the fact that the maximum words this text box can contain are 5000 words, we decided to write the solution for question 3 and upload it in an image format.

Please check to the attached image below for the solution to question number 3.

4 0
3 years ago
2 + 90 - x = 10<br> Its pretty ez ( I want to give back to the community and give so ez points)
fenix001 [56]

Answer:

x=82 hope this helps!

Step-by-step explanation:

2+90−=10

2+90−x=102+90-x=102+90−x=10

Solve

1

Add the numbers

2+90−=10

92−=10

2

Rearrange terms

3

Subtract

92

929292

from both sides of the equation

4

Simplify

5

Divide both sides of the equation by the same term

6

Simplify

Solution

2+90−=10

2+90−x=102+90-x=102+90−x=10

Solve

1

Add the numbers

2+90−=10

92−=10

2

Rearrange terms

3

Subtract

92

929292

from both sides of the equation

4

Simplify

5

Divide both sides of the equation by the same term

6

Simplify

Solution

=82

8 0
3 years ago
Read 2 more answers
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