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3 years ago

Use square roots to solve x2 - 10x + 25 = 144

Mathematics

2 answers:

Vilka [71]3 years ago

8 0

Answer:

x = 7

Step-by-step explanation:

Factor the problem to get (x - 5)^2 = 144

Square root to get x + 5 = 12

Subtract 5 to get x = 7

EastWind [94]3 years ago

7 0

Answer: x = 17

Step-by-step explanation: Factor the equation to get

(x - 5)² = 144

Take the square root of each side to get

x - 5 = 12 Add 5 to both sides.

x = 17

Check:

17² - 10(17) + 25 = 144

289 - 170 + 25 = 144

119 +25 = 144. true.

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Ede4ka [16]

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3 years ago

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scZoUnD [109]

Answer:

$y=-\frac{10}{3}x-23$

Step-by-step explanation:

we have the points

(-9,7) and (-6,-3)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{-3-7}{-6+9}$

$m=-\frac{10}{3}$

step 2

Find the equation in point slope form

$y-y1=m(x-x1)$

we have

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substitute

$y+3=-\frac{10}{3}(x+6)$ ---> equation in point slope form

step 3

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$y+3=-\frac{10}{3}(x+6)$

Isolate the variable y

Distribute right side

$y+3=-\frac{10}{3}x-20$

subtract 3 both sides

$y=-\frac{10}{3}x-20-3$

$y=-\frac{10}{3}x-23$

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3 years ago

8x+4y=-2 -12x+5y=-8 What is the answer

tester [92]

Answer:

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2 years ago

Rectangle A is a scaled version of rectangle B. The dimensions of rectangle A are three times the dimensions of rectangle B. The

Firlakuza [10]

Answer:

1458 sq cm

Step-by-step explanation:

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4 years ago

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Sveta_85 [38]

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3 years ago