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saveliy_v [14]
3 years ago
5

Compute the value of the discriminant and give the number of real solutions of the quadratic equation. -2x^2+6x-1=0

Mathematics
1 answer:
OlgaM077 [116]3 years ago
7 0

Answer:

28

Step-by-step explanation:

D=b²-4ac

=(6)²-4(-2)(-1)

=36-8

=28

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equation 
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3 years ago
Li walks at a constant rate of 7 ft. in 4 seconds. The table shows the relationship of feet to seconds. What is the constant of
Kisachek [45]

Answer:

The rate is 1.75 feet/seconds or 105 feet/minute.

Step-by-step explanation:

Given that,

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To find the constant of proportionality, divide 7 feet by 4 seconds.

So,

k=\dfrac{7\ \text{feet}}{4\ \text{seconds}}\\\\k=1.75\ \text{ft/s}

1.75 ft/s is the constant of proportionality

We know that, 1 minute = 60 seconds

k = 105 feet/minute

So, the rate is 1.75 feet/seconds or 105 feet/minute.

4 0
3 years ago
Greg has 21 new magazines to read. Let M be the number of magazines he would have left to read after reading R of them. Write an
Rina8888 [55]

M = 21 - R is our equation. Plug your value of 12 into the equation for R.

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7 0
3 years ago
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Lera25 [3.4K]
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3 years ago
Solve (x-3)^2=5<br> A. x=5+√3<br> B. x=-3+√5<br> C. x=3+√5<br> D. x=8 and x=-2
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Answer:

A

Step-by-step explanation:

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