Which Expression is equivalent to (3x^(5) + 17 x^{3) -1) + (-2x^(5) -6)?

Answers

Answer 1

Answer: $(3x^5+17x^3-1)+(-2x^5-6)\n\n=3x^5+17x^3-1-2x^5-6\n\n=x^5+17x^3-7$

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Solve for all possible values of x. square root of the quantity x minus 9 end quantity plus 4 equals 8

a) x = −5
b) x = 7
c) x = 13
d)x = 25

Answers

Answer:

Option d) x = 25

Step-by-step explanation:

we have

$√(x-9)+4=8$

Solve for x

Subtract 4 both sides

$√(x-9)+4-4=8-4$

$√(x-9)=4$

squared both sides

$(x-9)=(+/-)4^2$

$(x-9)=(+/-)16$

Adds 9 both sides

$x=9(+/-)16$

$x1=9(+)16=25$

$x2=9(-)16=-7$

Verify

1) For x=25

$√(25-9)=4$

$√(16)=4$

$4=4$ ----> is true

therefore

x=25 is a solution

2) For x=-7

$√(-7-9)=4$

$√(-16)=4$

The radicand cannot be a negative number

therefore

x=-7 is not a solution

How do i solve the problem 5.05 time 5

Answers

Answer: To find the product of 5.05 and 5, you simply multiply the two numbers together:

5.05 * 5 = 25.25

Therefore, the product of 5.05 and 5 is 25.25.

What is the distance between the points (3,7) and (15,16)?

Answers

distance between the point formula is
d= $√((y2-y1)^2+(x2-x1)^2)$
where (x1,y1) and (x2,y2) are coordinates points

here points are given (3,7) (15,16)

put those points into distance formula
d= now u can do this

How many solutions does x^2 - 2x +1 = O have?

Answers

Answer:

Step-by-step explanation:

(X-1)(X-1) are your factors which only give you one solution of x=1

An auction website charges $1 for a bid. The bidding starts at 1¢ and goes up 1¢ at a time. A television that is worth $2000 is won, on average, with a bid of $160. You make one bid at random.Find the expected value of the outcome of the bid. (Write as an exact decimal, with a negative sign, if necessary.)

Expected Value: $ _____

Answers

Answer:

The answer is: expected value is -$0.88

Step-by-step explanation:

Given is, the he bidding starts at 1¢ and goes up 1¢ at a time. A television that is worth $2000 is won, on average, with a bid of $160. So, $160 in 1¢ steps means 16000 bids.

Therefore, a person invest $1 with a 1/16000 probability of a $2000 return.

Noe, the expected value will be = $-1+((1)/(16000))*2000$

= -1+0.125 = -0.875 ≈ -$0.88

Hence, the answer is -$0.88

$12.50/-$12.50, if I am wrong i am sorry

Brenda’s scores on the first three of four 100-point science tests were 95, 92, and 89. What score does she need on her fourth science test to ensure an average score of at least 93?. . A) X ≥ 96. B) X ≤ 90. C) X ≥ 88. D) X ≤ 92

Answers

The average is equal to the mean of the data set. It is the total of the data or numbers given divided by the ordinal unit of the data set. In this case, we are given with scores of 95, 92, and 89. To have an average of at least 93, the fourth score should be :
95 + 92 + 89 + x ≥ 93 * 4 where 4 is the number of data points.
x ≥ 96. Test score should be equal or greater than 96.

average of 93

4 scores
(95+92+89+x)/4>93
times 4 both sides
276+x>372
minus 276 both sides
x>96

A

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