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KonstantinChe [14]
3 years ago
7

Help?! Also why do these have to be 20 digits long

Mathematics
1 answer:
Paha777 [63]3 years ago
6 0
The fraction would be 7/9.
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What is the equation of a line that passes through the point (0, 8) and is parallel to a line with a slope of ?
mylen [45]
Can u plz answer my question I'm in a test and its about to be over

3 0
3 years ago
Find the discriminant for the following equation 3x^2+4x=2
hichkok12 [17]

Answer:

The discriminant is 40

Step-by-step explanation:

First, rewrite the equation as 3x^2+4x-2=0 so that the equation is in the form of ax^2+bx+c=0. Thus, the discriminant is b^2-4ac=(4)^2-4(3)(-2)=16+24=40. This tells us that since the discriminant is greater than 0, then there are 2 real solutions.

6 0
2 years ago
Read 2 more answers
Which type of sequence is shown? Check all that apply. 4, 8, 12, 16, . . . The numbers are quickly getting larger, so this is a
melisa1 [442]

Step-by-step explanation:

4, 8 , 12 , 16 .....

  • This is an arithmetic sequence because there is a common difference of 4 between each term.
  • This is a geometric sequence because there is a common ratio of 2 between each term.

Hope it will help.

7 0
3 years ago
Prove that C(50,3) + C(50,4) = C(51,4)
valkas [14]

By definition of the binomial coefficient,

C(n,k) = \dfrac{n!}{k!(n-k)!}

so we have

C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)

as required.

5 0
2 years ago
The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is four times
prohojiy [21]

Answer:

{36, 66, 78}

Step-by-step explanation:

Let the measures of the three angles be f, s and t, for first, second and third.  Then s + t = 4f, t = 12 + s, and f + s + t = 180.

Subbing 12 + s for t in the first equation, we get s + 12 + s = 4f.

Subbing the same in the third equation, we get f + s + 12 + s = 180

This results in two equations in two unknowns (f and s):

2s - 4f = -12

2s  + f  = 168.

Let's eliminate s by subtracting the first of these two equations from the second.  Doing so yields 5f = 180.  Then the first angle, f, or x, is 36.

Then, from 2s + f = 168, we get 2s + 36 = 168, or 2s = 132.  Thus, the second angle is s = y = 66.

The sum of the three angles must be 180.  Thus, 36 + 66 + t = 180, or

102 + t = 180, or t = z = 78.

The three angles are

{36, 66, 78}.

3 0
3 years ago
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