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2 years ago

Find the value of x.

Mathematics

2 answers:

Marizza181 [45]2 years ago

8 0

Sum of angles of triangle = 180°

Therefore:

x + 60 + 41 = 180
x + 101 = 180
x = 180 - 101
x = 79°

hope it helps!

Elena L [17]2 years ago

5 0

Answer:

Step-by-step explanation:

Add 41 and 60 and it gives us 101. These are equal to 180. So 180 -101 is 79.

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Solve y=-3x² + 4.5x – 20 Use the Quadratic formula

statuscvo [17]

Answer:

$x=0.75 \pm 2.47067i$

Step-by-step explanation:

Quadratic Formula: $x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}$

√-1 is imaginary number i

Step 1: Define

y = -3x² + 4.5x - 20

a = -3

b = 4.5

c = -20

Step 2: Substitute and Evaluate

$x=\frac{-4.5 \pm \sqrt{4.5^2-4(-3)(-20)} }{2(-3)}$

$x=\frac{-4.5 \pm \sqrt{20.25-240} }{-6}$

$x=\frac{-4.5 \pm \sqrt{-219.75} }{-6}$

$x=\frac{-4.5 \pm \sqrt{219.75}(\sqrt{-1} ) }{-6}$

$x=\frac{-4.5 \pm i\sqrt{219.75} }{-6}$

$x=\frac{4.5 \pm i14.824 }{6}$

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7 0

3 years ago

What is 7 2/6 plus 8 5/6

yulyashka [42]

7 2/6 + 8 5/6
= (7 x 6 + 2)/6 + (8 x 6 + 5)/6
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= 44/6 + 53/6
= (44 + 53)/6
= 97/6
= 16 1/6

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Reil [10]

Answer:

Look to the explanation

Step-by-step explanation:

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by an integer

- Ex: The multiples of 2 are 2 , 4 , 6 , 8 , .......... because 2 × 1 = 2 ,

2 × 4 = 4 , 2 × 3 = 6 and 2 × 4 = 8

- Factors of a number are the number multiplied together to get the

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- Ex: The factors of 6 are 1 , 2 , 3 , 6 because 1 × 6 = 6 and 2 × 3 = 6

- Lowest common multiple of the set of numbers (LCM) is the

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