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allochka39001 [22]
3 years ago
14

State the value of the discriminant of -6x^2 +2x + 3 = 0

Mathematics
1 answer:
Dmitry [639]3 years ago
4 0

Answer:

76

Step-by-step explanation:

recall that for a quadratic equation in the form

ax² + bx + c = 0, the discriminant is given by

discriminant, D = b²- 4ac

we are given the following:

-6x² + 2x + 3 = 0,

comparing this with the general equation above, it is clear that,

a = -6, b = 2 and c = 3,

substituting these into our equation for discriminant:

D = b²- 4ac

= 2² - 4(-6)(3)

= 4 + 72

= 76

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A triangular flag had a base of 3 feet and a height of 1 3/5 feet. What is the area of the flag?
nignag [31]

Answer:

4.8 feet.

Step-by-step explanation:

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5 0
3 years ago
10x+4y+ 12z=120 <br> 11x +77y =220 <br> 8x +2y +32z =160
Damm [24]

Answer:

x=8.94 ; y = 1.58; z=2.02

Step-by-step explanation:

solve 10x+4y+12z = 120      →          5x+2y+6z = 60

         8x + 2y +32Z = 160   →           4x+y+16z = 80

To eliminate z multiply first equation by 16 and second equation by 6.

80x+32y+96z = 960

24x+6y+96z =   480

on subtractionwe get 56x+26y = 480

dividing by 2 we get, 28x + 13y = 240

Now we have a given equation 11x + 77y = 220 → x + 7y = 20

solving 28x + 13y = 240 and x + 7y = 20

28x + 13y =240

28x + 216y = 560

subtracting we get, 203y = 320

y = 1.58

x = 8.94

z = 2.02

6 0
3 years ago
What is the estimate for 312+138+207
eimsori [14]

Answer:

657

Step-by-step explanation:

312 + 138 + 207

= 450 + 207

= 657

8 0
3 years ago
Read 2 more answers
For the equation: 3x+1=2x+7 what are the 1 st and 2 nd opposite operations?
qaws [65]

Answer:

Step-by-step explanation:

3x +1 = 2x +7  subtract 1 from both sides ( first)

3x +1 -1 = 2x + 7 -1

3x = 2x + 6 subtract 2x brom both sides (second)

3x -2x = 2x -2x +6

5x = 6

4 0
2 years ago
Factorise 5n + 15<br> Please
White raven [17]

Answer:

The correct answer is

<u>5(n + 3)</u>

Use the distributive property to factor

Hope this helps!

- Quinn

4 0
3 years ago
Read 2 more answers
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