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3 years ago

Simplify by combining like terms: 2x + 1 + 7x

Mathematics

2 answers:

Lyrx [107]3 years ago

8 0

Answer:

9x+1

Step-by-step explanation:

combine like terms

2x+1+7x

9x+1

larisa [96]3 years ago

6 0

Answer: 9x + 1

Step-by-step explanation: As 2x and 7x share the same base, they are like terms. So, you can combine them and get 9x. As there are no other constants in the expression, 1 stays the same. Thus, your final answer is 9x + 1.

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consider a sequence of independent tosses of a biased coin at times k=0,1,2,…,n. On each toss, the probability of Heads is p, an

omeli [17]

Answer:

1. p*(1-p)

2. n*p*(1-p)

3. p*(1-p)

4. 0

5. p^2*(1-p)^2

6. 57/64

Step-by-step explanation:

1. Let Ik denote the reward (possibly 0) given at time k, for k∈{1,2,…,n}. Find E[Ik].

E[Ik]= p*(1-p)

2. Using the answer to part 1, find E[R].

E[R]= n*p*(1-p)

The variance calculation is more involved because the random variables I1,I2,…,In are not independent. We begin by computing the following values.

3. If k∈{1,2,…,n}, then

E[I2k]= p*(1-p)

4. If k∈{1,2,…,n−1}, then

E[IkIk+1]= 0

5. If k≥1, ℓ≥2, and k+ℓ≤n, then

E[IkIk+ℓ]= p^2*(1-p)^2

6. Using the results above, calculate the numerical value of var(R) assuming that p=3/4, n=10.

var(R)= 57/64

5 0

3 years ago

Guillermo saved 25% of his paycheck last week. His paycheck was $1000. How much money did he save?

Bingel [31]

He saved 250 dollars.

8 0

3 years ago

Read 2 more answers

PLZZ HELP

Digiron [165]

54 because there are 12 inches in a foot 12 divided by 3 is 4 and 6 divided by 3 is 2. Add the 2 and 4 and multiply that by 9

4 0

3 years ago

Someone please help me??

lapo4ka [179]

The standard equation of a circle with centre (xc,yc) and radius R is given by

$(x-x_c)^2+(y-y_c)^2=R^2$

Substituting
centre (xc,yc) = (4,-3)
R=2.5

The equation is therefore

$(x-x_c)^2+(y-y_c)^2=R^2$
$(x-4)^2+(y-(-3))^2=2.5^2$
$(x-4)^2+(y+3)^2=2.5^2$ or
(x-4)^2+(y+3)^2=6.25

7 0

3 years ago

Answer correct you get brainliest answer.

iragen [17]

Answer:

part c

Step-by-step explanation:

because i have done it before

3 0

3 years ago