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Vanyuwa [196]
3 years ago
14

If the discriminate of a quadratic equation is 28 describe the roots

Mathematics
1 answer:
katrin2010 [14]3 years ago
7 0
B) two real roots is the answer because it is bigger than 0.
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Use slopes and y-intercepts to determine if the lines 6x+y=−1 and −2x−5y=1 are parallel.
kobusy [5.1K]

Answer:

The two lines are not parallel.

Step-by-step explanation:

Every linear equation follows this structure:

y = mx + b

y is the y value

x is the x value

m is the gradient/slope of the line

b (or sometimes c) is the y-intercept of the line

Firstly, we have to get the y term on one side by itself.

6x + y = -1

-6x        -6x

y = -6x - 1

-2x -5y = 1

+2x         +2x

-5y = 2x + 1

Secondly, we make it so the y term is just the y value.

The first equation is already like this, so we don't need to do anything to that.

-5y = 2x + 1

÷ -5  ÷ -5

y = (2x + 1) / -5

This can be expanded and simplified to:

y = -2/5x - 1/5

Thirdly, we have to compare the slopes and y-intercepts.

y = -6x - 1

y = 2/5x - 1/5

If the slopes are the same and the y-intercepts are different, they are parallel. However, the slopes are different, therefore they are not parallel.

7 0
3 years ago
A spieces of extremely rare, deep water fish are slowly becoming extinct. If there are a total of 821 of this type of fish and t
Step2247 [10]

Answer:

12 months in a year

6 is half a month so we're going off of 6 months.

So:

821*0.15= 123.15

821- 123.15= 697.85

697.85*0.15= 104.6775

697.85-104.6775= 593.1725

593.1725*0.15= 88.975875

593.1725-88.975875= 504.196625

504.196625 *0.15= 75.62949375

504.196625- 75.62949375= 428.56713125

428.56713125*0.15= 64.2850696875

428.56713125-64.2850696875 = 364.282061562

364.282061562*0.15= 54.6423092344

364.282061562-54.6423092344 = 309.639752328

So its 310 fish.

6 0
3 years ago
The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h.
Mila [183]

Answer:

a =  \frac{a - 12bh}{12a}

4 0
3 years ago
What is the slope need help yall!!​
stellarik [79]

Answer:

- 3/4

Step-by-step explanation:

slope equals rise/run--rise is 3 and run is 4 and it's going downhill which makes it negative

7 0
3 years ago
What is the value of x ????
Zielflug [23.3K]

Answer:THAT WILL BE X2 OR 2XTIMES X

Step-by-step explanation:

6 0
2 years ago
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