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3 years ago

What is the value of y?

Mathematics

2 answers:

romanna [79]3 years ago

7 0

Answer:

Step-by-step explanation:

y+y+60=180

2y =120

therefore,y=60

uranmaximum [27]3 years ago

6 0

Answer:

C. 60°

Step-by-step explanation:

To answer this problem we must make use of the sum of the internal angles of a triangle.

For any triangle the sum of its internal angles is equal to 180 °.

So we must add all the angles to find the answer:

$y+y+60=180$

now we can add the two terms 'y'

$2y+60=180$

and now we clear for 'y':

$2y=180-60\\2y=120\\y=120/2\\y=60$

The value of y is 60°

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Which values of x are solutions of the equation below

Mandarinka [93]

Answer:

x = 3.3 and -0.3

Step-by-step explanation:

Given the expression

1/x-4 + x/x-2=2/x^2-6x+8

Find the LCM

x-2+x(x-4)/(x-4)(x-2) = 2/x^2-6x+8

Since the denominator, are the same they cancels out

x +1 + x(x-4) = 2

x+1 + x²-4x = 2

x²-3x + 1 - 2 = 0

x² - 3x - 1 = 0

Factorize

x =3±√9+4/2

x =3±√13/2

x = 3±3.6/2

x= 6.6/2 and -0.6/2

x = 3.3 and -0.3

4 0

3 years ago

Use the change of base formula to evaluate log3(73).

Marrrta [24]

The change of base formula allows you to write a logarithm in terms of logarithms with another base. It follows this pattern,

$log_{a}x = \frac{ log_{b}x }{log_{b}a }$

where a≠1 and b≠1

Assigning the base to be 7,

$log_{3}73 = \frac{ log_{7}73 }{log_{7}3 }=3.9$

I hope I was able to answer your question. Have a good day.

3 0

3 years ago

What is -3(-6z-5)-9z

andreyandreev [35.5K]

If you factor it then your answer will be -3(-3z-5) if you simplify the answer is 9z+15

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3 years ago

Read 2 more answers

Prove that . 1+cot2 theta = cosec2theta

igor_vitrenko [27]

Answer:

see explanation