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3 years ago

Solve. (x-4)²=5 PLEASE HELP

Mathematics

1 answer:

goldenfox [79]3 years ago

8 0

Answer:

Step-by-step explanation:

(x-4)^2=5

(x-4)(x-4)=5

x(x-4)-4(x-4)=5

distribute

x^2-4x-4x+16=5

combine like terms

x^2-8x+16=5

move terms to the left and combine

x^2-8x+11=0

use the quadratic formula and simplify

x=-(-8)+/-2 to the square roots of 5 over 2

separate and solve

x=4+ square root of 5

x=4- square root of 5

ANSWER: x=4+/- square root of 5

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photoshop1234 [79]

Step-by-step explanation:

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4 years ago

Solve the following proportion for the unknown variable: 15/d = 24/40

Pavel [41]

Answer:
d = 25

Explanation:
To get the value of d, we will need to isolate the d on one side of the equation.

This can be done as follows:
 $\frac{15}{d} = \frac{24}{40}$ 

First, we will do cross multiplication as follows:
40*15 = 24*d
600 = 24d

Then, we will isolate the d as follows:
24d = 600
 $\frac{24d}{24} = \frac{600}{24}$

d = 25

Hope this helps :)

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s2008m [1.1K]

the answe is ....

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-6,1

step by step

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lions [1.4K]

Answer:

Your simplified fraction would be 12 6/7 so I’d say *C* because that’s the closest to the simplified fraction

Step-by-step explanation:

im just explain

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