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Travka [436]
3 years ago
13

The only solution for the equation x^2+bx +16=0 is x=4 what is the value of B

Mathematics
2 answers:
sergeinik [125]3 years ago
5 0

Answer:

The value of b=-8

Step-by-step explanation:

Given : The only solution for the equation x^2+bx +16=0 is x=4.

To find : What is the value of b ?

Solution :

The equation x^2+bx +16=0

The only solution of the equation is x=4.

So, Substitute the value of x in the equation

(4)^2+b(4) +16=0

16+4b+16=0

4b+32=0

4b=-32

b=-\frac{32}{4}

b=-8

Therefore, the value of b is -8.

jeka943 years ago
3 0

x^2+bx +16=0 is x=4

x^2+bx +16=(x-4)^2

x^2+bx +16=(x^2 -8x+16)

b=-8

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3 years ago
2 - 3x = -x - 8 Solve for X
icang [17]

Answer:

X=5

Step-by-step explanation:

(step 1) 2 - 3x = -x - 8

-3x + 2 = -x -8

(step 2)

-3x + 2 = -x - 8

-3 + 2 - 2 = -x -8 -2

(step 3)

-3x =  -x- 10

(step 4)

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(step 5)

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Answer

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3 0
3 years ago
A new bed costs $1,200. If the tax rate is 8.25%, how much will the bed cost including tax?
tigry1 [53]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer: 43%

Step-by-step explanation:

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New house: 51 miles away.

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x=\frac{(51)(100)}{89}

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So, if 57% is 51 miles, substract 57 from 100.

100-57=43% This is the decrease.

8 0
3 years ago
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