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myrzilka [38]
3 years ago
8

Under which of the following operations are the polynomials 8a + 14 and

Mathematics
2 answers:
Likurg_2 [28]3 years ago
7 0
For the answer to the question <span>Under which of the following operations are the polynomials 8a + 14 and 3b - 9 not closed?

The answer is the fourth one among the given choices and it is </span><span>D.Division.
</span><span>
I hope my answer helped you. Feel free to ask more questions. Have a nice day!

</span>
Mrrafil [7]3 years ago
4 0
The answer is D. check here for more details: https://prezi.com/hqgfggufngnw/under-which-operations-are-polynomials-closed/
You might be interested in
4th term of an arithmetic sequence is 23 and its 11th term is 65, what is its common difference​
Rudik [331]

Answer:

d = 6

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₄ = 23 and a₁₁ = 65 , then

a₁ + 3d = 23 → (1)

a₁ + 10d = 65 → (2)

Subtract (1) from (2) term by term to eliminate a₁

10d - 3d = 65 - 23

7d = 42 ( divide both sides by 7 )

d = 6

5 0
3 years ago
What is 8×5/7 answer
VikaD [51]

Answer:

5.714

Step-by-step explanation:

8*5= 40

40/7= 5.714

7 0
3 years ago
A recent study conducted by the state government attempts to determine whether the voting public supports a further increase in
Vlada [557]

Answer:

0.001%

Step-by-step explanation:

Given that a recent study conducted by the state government attempts to determine whether the voting public supports a further increase in cigarette taxes to help the public schools

n = 1500

favour x = 622

Sample proportion p = 622/1500 = 0.4147

H_0: p = 0.66\\H_a: p >0.66

(right tailed test)

Assume H0 to be true.

Std error = \sqrt{\frac{0.66*0.34}{1500} } \\=0.01223

p difference = -0.2453

Test statistic Z = \frac{-0.2453}{0.01223} \\=-20.05

p value <0.00001

Hence fon ull hypothesis not to be rejected significant level should be greater than 0.00001 or 0.001%

5 0
4 years ago
South Central High Students' Council is traveling to Redding for the Students' Council National Conference. From the travel budg
Pavlova-9 [17]

Answer:

3 hours

Step-by-step explanation:

Distance between South Central High and Redding = 480km

Distance= Average Speed X Time

Let the speed of the express train=x

Let the time taken BG the train=t

For the train:

480=xt...(1)

Since the plane flies 40km/hr faster

Speed of the Plane=x+40

They can save one hour using the plane, so Time taken by the plane

=(t-1)hours

For the plane:

Distance= Average Speed X Time

480=(x+40)(t-1)....(2)

Equate equations 1 and 2 since the distances are equal.

xt=(x+40)(t-1)

xt=xt-x+40t-40

x=40t-40

Substitute x=40t-40 into equation (1)

480=xt

480=(40t-40)t

40t²-40t-480=0

Dividing all through by 40

t²-t-12=0

t²-4t+3t-12=0

t(t-4)+3(t-4)=0

(t-4)(t+3)=0

t-4=0 or t+3=0

t= 4hours (Since t cannot be negative)

Since it will take (t-1) hours to fly, it takes 3 hours to fly to Redding.

3 0
4 years ago
Read 2 more answers
Can someone help me with these questions?
vfiekz [6]
Y/x = 9/12 = 3/4
so
y = (3/4)x . . . . . . both x and y in dollars.
4 0
4 years ago
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