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2 years ago

Y=3x-4;x =2 find the value of y for the given value of x

Mathematics

2 answers:

Ivanshal [37]2 years ago

7 0

Answer:

Y=2

Step-by-step explanation:

Y=3x-4

Y=3(2)-4

Y=6-4

Y=2

Tpy6a [65]2 years ago

4 0

Since you already know the X value, plug it into the equation

Y = 3 x 2 - 4 which is 2 So Y = 2

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x^2=6x+1 rewrite the equation by completing the square your equation should look like (x+a)^2=b or (x-c)^2=d

ryzh [129]

Answer:

(x - 3)² = 10

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra I

Completing the Square

Step-by-step explanation:

Step 1: Define

x² = 6x + 1

Step 2: Rewrite

Subtract 6x on both sides: x² - 6x = 1
Complete the Square: x² - 6x + 9 = 1 + 9
Factor: (x - 3)² = 10

8 0

2 years ago

If f(x) = 5x + 40, what is f(x) when x = –5?

kakasveta [241]

First note that f(x) means the same thing as y. To solve for f(x) or y you need to plug in -5 for x and solve using the rules of PEMDAS

5(-5) + 40

-25 + 40

When x is -5 then y is 15

Hope this helped!

~Just a girl in love with Shawn Mendes

5 0

2 years ago

Mark wants to maintain an average of 70 on his math tests to remain eligible for sports. So far, he earned scores of 68, 75, 74,

Alex17521 [72]

Answer:

Step-by-step explanation:

(68+75+74+82+88+x)/6=70

(387+x)/6=70

x= 33

6 0

2 years ago

PLEASE HELP!!! This is due today and I don’t understand can someone please tell me.

Thepotemich [5.8K]

Answer:

the answer would be 135 meters

Step-by-step explanation:

If, to scale on a map, 1 centimeter is 3.5 meters, them 2 centimeters is 7 meters. so on and so forth until 30. 30 (centimeters) times 3.5 (meters) is 135. hope this helped!!!!! reply if this doesn't make sense

3 0

2 years ago

With reference to the figure, sin X equals? 1.) 0.250 2.)0.447 3.)0.894 4.)1

Flura [38]

Answer:

3.) 0.894

Step-by-step explanation:

✔️First, find BD using Pythagorean Theorem:

BD² = BC² - DC²

BC = 17.89

DC = 16

Plug in the values

BD² = 17.89² - 16²

BD² = 64.0521

BD = √64.0521

BD = 8.0 (nearest tenth)

✔️Next, find AD using the right triangle altitude theorem:

BD = √(AD*DC)

Plug in the values into the equation

8 = √(AD*16)

Square both sides

8² = AD*16

64 = AD*16

Divide both sides by 16

4 = AD

AD = 4

✔️Find AB using Pythagorean Theorem:

AB = √(BD² + AD²)

AB = √(8² + 4²)

AB = √(64 + 16)

AB = √(80)

AB = 8.9 (nearest tenth)

✔️Find sin x using trigonometric ratio formula:

Reference angle = x

Opposite side = BD = 8

Hypotenuse = AB = 8.944

Thus:

$sin(x) = \frac{opp}{hyp} = \frac{8}{8.944} = 0.894$ (nearest thousandth)

6 0

2 years ago