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3 years ago

If Jenny has 20 donuts and she gives away 10 how many does she have left?

Mathematics

2 answers:

stiks02 [169]3 years ago

8 0

10 donuts to be exact

PilotLPTM [1.2K]3 years ago

8 0

Answer:

Step-by-step explanation:

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The circumference of a circle is 6.28 yards. What is the circles area

Nuetrik [128]

Answer:

Step-by-step explanation:

circumference=2πr=6.28

r=6.28/2π=3.14/π=3.14/3.14=1

area=πr^2=π×1²=π=3.14 units²

8 0

3 years ago

Read 2 more answers

Write a word phrase that can represent the algebraic expression: 2(5-n)

Fed [463]

2(5-n) can be an expression of "twice the difference of 5 and n".

3 0

2 years ago

Im going to give 15 points for this question please answer it please

Leviafan [203]

I think it's either 18 or 24.. I've had this question before but I'm not positive which answer I put and if it was correct, sorry I couldnt help much :(

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2 years ago

(HURRY! I'M BEING TIMED)Write the partial fraction decomposition of the rational expression.

Aleonysh [2.5K]

Answer:

The partial fraction decomposition is $\frac{- 4 x^{2} + 13 x - 12}{\left(x + 1\right)^{2} \left(x + 2\right)}=\frac{50}{x + 1}+\frac{-29}{\left(x + 1\right)^{2}}+\frac{-54}{x + 2}$ .

Step-by-step explanation:

Partial-fraction decomposition is the process of starting with the simplified answer and taking it back apart, of "decomposing" the final expression into its initial polynomial fractions.

To find the partial fraction decomposition of $\frac{- 4 x^{2} + 13 x - 12}{\left(x + 1\right)^{2} \left(x + 2\right)}$ :

First, the form of the partial fraction decomposition is

$\frac{- 4 x^{2} + 13 x - 12}{\left(x + 1\right)^{2} \left(x + 2\right)}=\frac{A}{x + 1}+\frac{B}{\left(x + 1\right)^{2}}+\frac{C}{x + 2}$

Write the right-hand side as a single fraction:

$\frac{- 4 x^{2} + 13 x - 12}{\left(x + 1\right)^{2} \left(x + 2\right)}=\frac{\left(x + 1\right)^{2} C + \left(x + 1\right) \left(x + 2\right) A + \left(x + 2\right) B}{\left(x + 1\right)^{2} \left(x + 2\right)}$

The denominators are equal, so we require the equality of the numerators:

$- 4 x^{2} + 13 x - 12=\left(x + 1\right)^{2} C + \left(x + 1\right) \left(x + 2\right) A + \left(x + 2\right) B$

Expand the right-hand side:

$- 4 x^{2} + 13 x - 12=x^{2} A + x^{2} C + 3 x A + x B + 2 x C + 2 A + 2 B + C$

The coefficients near the like terms should be equal, so the following system is obtained:

$\begin{cases} A + C = -4\\3 A + B + 2 C = 13\\2 A + 2 B + C = -12 \end{cases}$

Solving this system, we get that $A=50, B=-29, C=-54$ .

Therefore,

$\frac{- 4 x^{2} + 13 x - 12}{\left(x + 1\right)^{2} \left(x + 2\right)}=\frac{50}{x + 1}+\frac{-29}{\left(x + 1\right)^{2}}+\frac{-54}{x + 2}$

7 0

2 years ago

The graph of a function f is given. Use the graph to estimate the following. (Enter your answers using interval notation.)

kirill [66]

Using the graph and function concepts, it is found that:

a) The domain is $[-5,4]$ , while the range is $[-2,-5]$

b) The function is increasing in $[0,1]$ and $[2,3]$ , and decreasing $[-5,0], [1,2]$ , and $[3,4]$ .

--------------------

The domain of a function is given by it's input values, that is, the values of x, the horizontal axis on the graph.
The range of a function is given by it's output values, that is, the values of y, the vertical axis on the graph.
If the graph is pointing upwards, the function increases.
If the graph is pointing downwards, the function decreases.

--------------------

Item a:

On the graph, the x-values are from -5 to 4, thus the domain is: $[-5,4]$
The y-values are from -2 to -5, thus, the range is: $[-2,-5]$

--------------------

Item b:

On the graph, it is pointing upwards on the following intervals, for x-values: From 0 to 1, and from 2 to 3, thus, the function is increasing in $[0,1]$ and $[2,3]$ .
On the other intervals, $[-5,0], [1,2]$ , and $[3,4]$ , the function is decreasing.

A similar problem is given at brainly.com/question/10891721

6 0

2 years ago