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3 years ago

Someone help pleaseeee???

Mathematics

2 answers:

evablogger [386]3 years ago

7 0

Answer:

Katies Sample

Step-by-step explanation:

Why would someone be skateboarding in the dead of winter in the north?

BigorU [14]3 years ago

5 0

Answer: Katie's Sample

Step-by-step explanation: People usually skateboard in the summer not the winter

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

Andrews [41]

Answer:

x = 1 ±2sqrt(5)

Step-by-step explanation:

2x^2-4x-9=29

Add 9 to each each side

2x^2-4x-9+9=29+9

2x^2-4x=38

Divide by 2

2/2x^2-4/2x=38/8

x^2 -2x =19

Complete the square

x^2 -2x + (-2/2)^2 = 19 +(-2/2)^2

x^2 -2x +1 = 19+1

(x-1)^1=2 = 20

Take the square root of each side

sqrt((x-1)^2) = ±sqrt(20)

x-1 = ±sqrt(20)

Add 1 to each side

x-1+1 = 1 ±sqrt(20)

x = 1 ±sqrt(20)

Simplifying the square root of 20

x = 1 ±sqrt(4)sqrt(5)

x = 1 ±2sqrt(5)

3 0

3 years ago

WILL GIVE BRAINIEST TO THE CORRECT ANSWER!

11Alexandr11 [23.1K]

Answer:

B. Multiplication

Step-by-step explanation:

1+3x+(x*4)

1+3x+4x

You are multiplying x and 4

4 0

3 years ago

Hey need some help with this problem, its trigonometry with right triangles using SohCahToa if you can give me a hand it would b

Firlakuza [10]

For the given triangle, the value of x equals 30.9892 units.

Step-by-step explanation:

Step 1:

In the triangle, the angle is 40°, the opposite side has a length of 26 units, the adjacent side has a length of x units while the hypotenuse is not given.

To determine the value of x, we determine the value of the tan of the given triangle.

To calculate the tan of angle A we divide the opposite side's length by the the adjacent side's length.

$tan A = \frac{oppositeside}{adjacent side}.$

Step 2:

The length of the opposite side = 26 units.

The length of the adjacent side = x units.

$tan A = \frac{oppositeside}{adjacent side}, tan 40 = 0.8390, tan A = \frac{26}{x} .$

$0.8390 = \frac{26}{x} , x = \frac{26}{0.8390} = 30.9892.$

So x measures 30.9892 units.

6 0

3 years ago

What does the sum come to when taking 70% off £159 sterling

mars1129 [50]

The amount you save is : $119 (usd im so sorry, i tried to do it in £ but i had a hard time with the different currencies.) so, the sale price is : $51 usd

5 0

3 years ago

31/25x=−62 find the value of x

Rainbow [258]

The answer to the question is -50

6 0

3 years ago