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2 years ago

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

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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:

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

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°

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

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

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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:

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

We have:

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

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:

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

$- 2x^3 -16x^2-40x$

$x+ 20$

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

Add the numbers

2+90−=10

92−=10

Rearrange terms

Subtract

929292

from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Simplify

Solution

2+90−=10

2+90−x=102+90-x=102+90−x=10

Solve

Add the numbers

2+90−=10

92−=10

Rearrange terms

Subtract

929292

from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Simplify

Solution

=82

8 0

3 years ago

Read 2 more answers