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4 years ago

What are the measures of X,Y and Z ? Please help mee!!!!!!!

Mathematics

2 answers:

Alex17521 [72]4 years ago

8 0

Answer:

Z= 112

X=112

Y=68

Step-by-step explanation:

nalin [4]4 years ago

8 0

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

y=68 because they are vertical angles to the top one

x= 112 because it is supplementary to y so 180-68=112

z=112 because it is a vertical angle to <x

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21. Given the pattern below, which recursive formula represents the number of triangles in this sequence?

Tamiku [17]

Answer:

its 4

Step-by-step explanation:

a 1 = 3 , a n = a n - 1 + 2

because if you aply this to the shapes that you see at problem 21 you will see that it meaches them

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3 years ago

5. Find the discriminant of 15x2 = 4x – 1 and describe

diamong [38]

Answer:

a) The discriminant of the equation = - 44

b)The nature of the roots will be imaginary.

c) $x = \frac{2 +\sqrt{11} i}{15} or, x = \frac{2 - \sqrt{11} i}{15}$

Step-by-step explanation:

Here, the given expression is $15x^{2} = 4x -1$

or, $15x^{2} - 4x + 1 = 0$

Now the discriminant (D) of a quadratic equation $ax^{2} +b x + c = 0$

D = $b^{2} - 4ac = (-4)^{2} - 4(15) (1) = 16 - (60) = -44$

Hence, the discriminant of the equation = - 44

As D< 0, so the roots will be imaginary.

Now,by quadratic formula : $x = \frac{-b \pm \sqrt{b^{2} - 4ac} }{2a}$

So, here $x = \frac{-(-4) \pm \sqrt{D} }{2a} = \frac{4 \pm \sqrt{(-44 )} }{30}$

So, either $x = \frac{4 + \sqrt{(-44 )} }{30} or, x = \frac{4 - \sqrt{(-44 )} }{30}$

or, $x = \frac{2 +\sqrt{11} i}{15} or, x = \frac{2 - \sqrt{11} i}{15}$

8 0

3 years ago

Someone help me, i dont get it.

soldi70 [24.7K]

Answer:

1. Sides 1 and 2 are congruent so sides 3 are also congruent

2. Since angles D and R are the same and the two sides are the same, the triangles are the same

8 0

3 years ago

IfA=−3n+2 andB=5n−7, what is the value of A−B, in simplest form?

alukav5142 [94]

Answer:

Either -4n or 0n but most likely -4n

4 0

3 years ago

HELP WORTH 50 POINTS ILL GIVE U BRAINLESS IF UR RIGHT

eduard

Answer:

$3.3*10^{-3}$

Just like last time, you can convert them to their decimal forms, subtract, and convert back!

Hope this helps!

Brainliest please!

4 0

3 years ago

Read 2 more answers