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2 years ago

Can someone please help it’s very important

Mathematics

1 answer:

densk [106]2 years ago

5 0

Answer:

Step-by-step explanation:

RS is congruent to RV because of SSA or side side angle. RT is congruent to RT is a given. Lines that are perpindicular have right angles which proves angle v=angle s at the same time

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Do anyone know how to do this problems ? Please help!

EastWind [94]

so what is exactly the question

4 0

3 years ago

I REALLY NEED HELP I FORGOT HOW TO DO THIS :(

Elena-2011 [213]

Answer:

117.8

Step-by-step explanation:

i used heron's formula

√s(s-a)(s-b)(s-c)

s= (20+16+33)/2 = 34.5

√34.5(34.5-20)(34.5-16)(34.5-33)

= 117.8

3 0

2 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

2 years ago

Can y’all help me on question 21?!

Studentka2010 [4]

Answer:

Step-by-step explanation:

96 divided by 4 = 24

7 0

2 years ago

Read 2 more answers

Find the value of x in the figure below. Assume that the lines are parallel

Andreas93 [3]

C

work:

75 is equal to 2x+15

75-15 = 60

60/2 = 30

x=30

5 0

2 years ago