1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GalinKa [24]
2 years ago
10

Explain how to write an equival3nt expresion using the associative property 2+(11+y)​

Mathematics
1 answer:
nignag [31]2 years ago
3 0

Answer:

13 + y

Step-by-step explanation:

hope i helped :) !

brainliest pleaseee !!?

You might be interested in
How many square feet of tile is needed for a room of 24 foot x 24 foot
SIZIF [17.4K]

Answer:576

Step-by-step explanation:

24 squared is 576

4 0
2 years ago
What are the coefficients in this expression? 2x +9y+(-4) Select all that apply.
zalisa [80]
A) 2 and B) 9
Coefficients are the numbers in front of a variable. The x and y wouldn’t be considered coefficients.
6 0
2 years ago
Read 2 more answers
Please help me with the below question.
VMariaS [17]

By letting

y = \displaystyle \sum_{n=0}^\infty c_n x^{n+r}

we get derivatives

y' = \displaystyle \sum_{n=0}^\infty (n+r) c_n x^{n+r-1}

y'' = \displaystyle \sum_{n=0}^\infty (n+r) (n+r-1) c_n x^{n+r-2}

a) Substitute these into the differential equation. After a lot of simplification, the equation reduces to

5r(r-1) c_0 x^{r-1} + \displaystyle \sum_{n=1}^\infty \bigg( (n+r+1) c_n + (n + r + 1) (5n + 5r + 1) c_{n+1} \bigg) x^{n+r} = 0

Examine the lowest degree term \left(x^{r-1}\right), which gives rise to the indicial equation,

5r (r - 1) + r = 0 \implies 5r^2 - 4r = r (5r - 4) = 0

with roots at r = 0 and r = 4/5.

b) The recurrence for the coefficients c_k is

(k+r+1) c_k + (k + r + 1) (5k + 5r + 1) c_{k+1} = 0 \implies c_{k+1} = -\dfrac{c_k}{5k+5r+1}

so that with r = 4/5, the coefficients are governed by

c_{k+1} = -\dfrac{c_k}{5k+5} \implies \boxed{g(k) = -\dfrac1{5k+5}}

c) Starting with c_0=1, we find

c_1 = -\dfrac{c_0}5 = -\dfrac15

c_2 = -\dfrac{c_1}{10} = \dfrac1{50}

so that the first three terms of the solution are

\displaystyle \sum_{n=0}^2 c_n x^{n + 4/5} = \boxed{x^{4/5} - \dfrac15 x^{9/5} + \frac1{50} x^{13/5}}

4 0
2 years ago
Slope Intercept form of a Line.
valkas [14]

Answer:

Step-by-step explanation:

Slope: -3

y-intercept: -2 (y-intercept is where a line cross the y-axis, vertical line)

Pencil on the y-intercept, three down and one to the right, then trace the line from -2 on the y-axis.

3 0
2 years ago
Suppose we are testing the null hypothesis H 0 mu=20 and the alternative H iu =20 , normal population with sigma=6 A random samp
cupoosta [38]

Answer:

The value of the test statistic is z = -1.5

Step-by-step explanation:

The formula for the test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the statistic, \mu is the mean, \sigma is the standard deviation and n is the number of observations.

In this problem, we have that:

\mu = 20, X = 17, \sigma = 6, n = 9

So

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{17 - 20}{\frac{6}{\sqrt{3}}}

z = -1.5

The value of the test statistic is z = -1.5

8 0
3 years ago
Other questions:
  • Figure FGHJ is shown below.
    14·2 answers
  • What is the structure of a poem
    12·2 answers
  • Write an equation of the line passing through point P(4, 0)
    8·2 answers
  • From least to greates -4 3/7, -4 5/6, -5 3/7, 4 2/7, 5 1/7
    10·1 answer
  • Can someone check this?
    10·1 answer
  • When point e (-7, 2) is rotated 90º counterclockwise about the origin, it becomes point e' (-2, -7)?
    15·1 answer
  • Look at the figure classify the pair of angles: <4 and <5.
    11·2 answers
  • Please help me ASAP!!!
    12·1 answer
  • 5a please :) I don't know the formula
    10·1 answer
  • Solve 12x + 4 + 2x = 39
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!