Solve for x in the equation x^2-4x-9=29

Mathematics

2 answers:

skad [1K]3 years ago

7 0

<span>Solve for x in the equation x^2-4x-9=29
</span>
The Answer Is

X=168

vesna_86 [32]3 years ago

3 0

${x}^{2} - 4x - 9 = 29 \\ {x}^{2} - 4x - 38 = 0 \\ \\ x12 = \frac{ - b \frac{ + }{ - } \sqrt{d} }{2} \\ d = {b}^{2} - 4ac \\ d = 16 + 152 = 168 \\ \\ x1 = \frac{4 - \sqrt{168} }{2} \\ x2 = \frac{4 + \sqrt{168} }{2}$

You might be interested in

Please try to answer it if you want to :)

lubasha [3.4K]

i have no idea what to do

7 0

3 years ago

Read 2 more answers

Write an equation of the trend line rounding to two decimal places needed for this problem choose the points (1990, 253) and (20

solniwko [45]

Answer:The answer is C

Step-by-step explanation:

6 0

3 years ago

A circle has a center of (5,-5) and goes through (6,-2). What is the radius?

Fittoniya [83]

Start with the equation of a circle whose center is at (h,k) and whose radius is r:

(x-h)^2 + (y-k)^2 = r^2

Substituting the given coordinates of the center:

(x-5)^2 + (y-[-5])^2 = r^2, or (x-5)^2 + (y+5)^2 = r^2

Substituding the given coordinates of a point (6,-2) on the circle:

(6-5)^2 + (-2+5)^2 = r^2

Simplifying:

1^2 + 3^2 = r^2, or 1 + 9 = r^2, or 10= r^2. Then r = sqrt(10).

6 0

3 years ago

A contractor needs to buy nails to build a house. The nails come in small boxes and large boxes. Each small box has 200 nails an

Dima020 [189]

Answer: 21

Step-by-step explanation:

4 0

3 years ago

In a sale, normal prices are reduced by 17%. The normal price of a washing machine is reduced by £42.50

Misha Larkins [42]

Answer: The original price of washing machine is $250.

Step-by-step explanation:

Since we have given that

Rate of decline in normal prices = 17%

Amount of normal price reduced by = $42.50

Let the original price be x

According to question,

$\frac{17}{100}\times x=42.50\\\\x=\frac{100}{17}\times 42.50\\\\x=\$250$

Hence, The original price of washing machine is $250.

8 0

3 years ago