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Zarrin [17]
3 years ago
15

FREE BRAINLIEST!: (n+2) to the power of 2 - 5a + 1 when n=6 and a=2

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
6 0

Answer:

55

Step-by-step explanation:

2−5+1+8

11−5

i add 8 because  n is 6 so add 2 it is 8 so i put it in the problem  and got 55

have a nice day and sorry if wrong T_T

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The solution to an any quality is giving in the same building notation as The solution to an inequality is giving in the set bui
Lostsunrise [7]

<u>Options</u>

(A)\left(-\infty , \dfrac23\right]\\\\(B)\left(-\infty , \dfrac23\right) \\\\(C)(\frac23\right, \infty ) \\\\(D) [\frac23\right, \infty )

Answer:

(C)(\frac23\right, \infty )

Step-by-step explanation:

Given the solution to an inequality

{x|x>2/3}

The solution set does not include \dfrac23 , therefore, it must be open at the left. Recall that we use a curvy bracket ( to denote openness at the left.

Since x is greater than  \dfrac23 , the solution set contains all values of larger than  \dfrac23 up till infinity. Since infinity is an arbitrarily large value, we also use an open bracket at the right.

Therefore, another way to represent the solution {x|x>2/3} is:

(\frac23\right, \infty )

The correct option is C.

8 0
3 years ago
Pleas help me find the answer and show the work to this question
lions [1.4K]

Answer:

Leg\ 1 = 8

Leg\ 2 = 15

Step-by-step explanation:

Given: See Attachment

Required

Determine the length of the legs

To do this, we apply Pythagoras theorem.

Hyp^2 = Adj^2 + Opp^2

In this case:

17^2 = x^2 + (2x- 1)^2

Open Bracket

17^2 = x^2 + 4x^2- 2x-2x + 1

17^2 = 5x^2 - 4x + 1

289= 5x^2 - 4x + 1

Collect Like Terms

5x^2 - 4x + 1 - 289 = 0

5x^2 - 4x - 288 = 0

Solving using quadratic formula:

x = \frac{-b\±\sqrt{b^2 - 4ac}}{2a}

So:

x = 8 or x = -7.2

Since, x can't be negative, then:

x = 8

One of the leg is:

Leg\ 1 = x

Leg\ 1 = 8

Leg\ 2 = 2x - 1

Leg\ 2 = 2*8 - 1

Leg\ 2 = 16 - 1

Leg\ 2 = 15

6 0
3 years ago
Simplify the expression. 15+​(−4​)− 4/5j− 2/5j+6
Charra [1.4K]

Answer:

85j-6/5j

Step-by-step explanation:

4 0
3 years ago
Please help, the brainiest will go to the one with a good answer.
Mashutka [201]
Option c is your answer 3xy + 7x4
3 0
3 years ago
(2)/(7):0.6x=(4)/(21):0.25
inysia [295]

Answer:

 =  1.6

Unless you meant to clarify what in the equation you needed, but that is the answer to it.

7 0
3 years ago
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