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Alchen [17]
3 years ago
10

Given the trinomial 2x*2 + 4x − 2, what is the value of the discriminant? a. 0 b. 10 c. 32 d. 36

Mathematics
2 answers:
Komok [63]3 years ago
7 0
2x^{2}+4x-2 \\  \\ \Delta=b^{2}-4ac \\  \\ \Delta=4^{2}-4*2*(-2)=16+16=32

==================================
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<em>"Associate with people who are likely to improve you."</em>
DiKsa [7]3 years ago
6 0

Answer: C. 32

The answer to the equation 2x^2+4x-2 is C. 32

Step-by-step explanation:

I just took the test and got it correct!

Good Luck!!

- Aspyn

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Is -4 an even or odd numnber?
rewona [7]

Answer:

An even number

Step-by-step explanation:

Integers which are multiples of 2, are even numbers.

Integers which aren't multiples of 2, are odd numbers.

As integers can be positive and negative both, odd and even numbers also can be positive and negative.

7 0
4 years ago
SOLVED
Nastasia [14]
5)
a. The equation that describes the forces which act in the x-direction: 
<span>     Fx = 200 * cos 30 </span>
<span>
b. The equation which describes the forces which act in the y-direction: </span>
<span>     Fy = 200 * sin 30 </span>

<span>c. The x and y components of the force of tension: </span>
<span>    Tx = Fx = 200 * cos 30  </span>
<span>    Ty = Fy = 200 * sin 30 </span>

d.<span>Since desk does not budge, </span><span>frictional force = Fx
                                                                        = 200 * cos 30 </span>

<span>                                                 Normal force </span><span>= 50 * g - Fy
                                                                       = 50 g - 200 * sin 30 
</span>____________________________________________________________
6)<span> Let F_net = 0</span>
a. The equation that describes the forces which act in the x-direction: 
    (200N)cos(30) - F_s = 0

b. The equation that describes the forces which act in the y-direction:
    F_N - (200N)sin(30) - mg = 0

c. The values of friction and normal forces will be:
     Friction force= (200N)cos(30),
     
The Normal force is not 490N in either case...
Case 1 (pulling up)
F_N = mg - (200N)sin(30) = 50g - 100N = 390N

Case 2 (pushing down)
F_N = mg + (200N)sin(30) = 50g + 100N = 590N
4 0
4 years ago
HELP!!!!!!!!!!!!!!!!!
solniwko [45]

Answer:

it is a

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The Gaineys and the Arnolds are saving money for a trip to Utah to go snowboarding. The Arnolds are going to save a nickel on th
Debora [2.8K]

Write a recursive and explicit formula for each option.

  • The Arnolds

Save a nickel on the first day of the month and then double the amount each day for a month

=> a1 =0.05

=> a2 = a1* 2 = 0.05*2

=> a3 = a2*2 = a1* 2*2

..............................................

=>recursive an = a_{n-1} *2

=> explicit an = 0.05*2^{n-1}

  • The Gaineys

Start their savings by saving  $10  on the first day and then  $10  each day of the month

=> a1 = 10

=> a2 = a1 + 10 = 20

=> a3 = a2 +10 = 20 +10 =30

........................................................

=> recursive an = a_{n-1} +10

=> explicit an = 10 + 10( n-1)

Hope it will find you well.

8 0
3 years ago
Simplify equations HELP NOW!!
Anna [14]

Answer:

\frac{1}{5} (2x+10)=4 x=5

\frac{1}{3} (3x+9)=9 x=6

Step-by-step explanation:

\frac{1}{5} (2x+10)=4

Multiply both sides of the equation by 5.

5 · \frac{1}{5} · (2x+10)= 5 · 4

Simplify both sides of the equation.

2x+10=20

Subtract 10 from both sides of the equation.

2x=10

Divide each term by 2 and simplify.

x=5

--------------------------------------------------------------------

\frac{1}{3} (3x+9)=9

Substitute x for 6

\frac{1}{3} (3(6)+9)=9

Multiply 3 · 6

\frac{1}{3} ((18)+9)=9

Add 18 + 9

\frac{1}{3} (27)=9

Divide \frac{1}{3} ÷ 27

9 = 9

6 0
3 years ago
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