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NeTakaya
3 years ago
5

which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 2x – 1 into the quadratic formula below

? quadratic formula: x = -b±√b^2-4ac/2a
Mathematics
2 answers:
Rom4ik [11]3 years ago
6 0

Answer:

Step-by-step explanation:

Its Option A for those who didn’t get the explanation.

irinina [24]3 years ago
5 0

0 = 4x^2+2x- 1

Quadratic formula is

x = \frac{-b+-\sqrt{b^2-4ac}}{2a}

'a' is the coefficient of x^2 = 4

'b' is the coefficient of x = 2

'c' is the constant = -1

Now we plug in all the values in quadratic formula

x = \frac{-b+-\sqrt{b^2-4ac}}{2a}

x = \frac{-2+-\sqrt{2^2-4(4)(-1)}}{2(4)}

x = \frac{-2+-\sqrt{18}}{8}

The above one is the substitution of values of a,b,c in quadratic formula.

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An exponential relationship has a growth factor of3and y-intercept of 4.Evalute the function that represents the function that r
Murrr4er [49]

Answer:

f(10)= 236196

Step-by-step explanation:

Given

(x,y) = (0,4) --- y intercept

b = 3 --- growth factor

Required

f(10)

An exponential function is represented as:

y = ab^x

(x,y) = (0,4) means

4=a * b^0

4=a *1

a= 4

So, we have:

y = ab^x

y = 4(3)^x

or

f(x)= 4(3)^x

When x is 10, the value of the function is:

f(x)= 4(3)^x

f(10)= 4(3)^{10

f(10)= 236196

6 0
3 years ago
NEED HELP!!!plssssssssssssss
alexgriva [62]

Answer: 1st,2nd, and 4th one

Step-by-step explanation:

5 0
2 years ago
I need help right now PLEASE!! !Please explain your answer
leva [86]

Answer:

Step-by-step explanation:

5 0
3 years ago
Bob discovers a box with 30 identical, used, rechargeable batteries in his attic.
monitta

Answer:

a) All of them are out of charge = 9.31x10⁻¹⁰

b) 20% of them are out of charge = 5.529x10⁻⁴

Step-by-step explanation:

This problem can be modeled as a binomial distribution since

There are n repeated trials and all of them are independent of each other.

There are only two possibilities: battery is out of charge and battery is not out of charge.

The probability of success does not change with trial to trial.

Since it is given that it is equally likely for the battery to be out of charge or not out of charge so probability of success is 50% or 0.50

P = 0.50

1 - P = 0.50

a) All of them are out of charge?

Probability = nCx * P^x * (1 - P)^n-x

Probability = ₃₀C₃₀(0.50)³⁰(0.50)⁰

Probability = 9.31x10⁻¹⁰

b) 20% of them are out of charge?

0.20*30 = 6 batteries are out of charge

Probability =₃₀C₆(0.50)²⁴(0.50)⁶

Probability = 5.529x10⁻⁴

5 0
3 years ago
Plz help this is due in like 1 hour
poizon [28]

Answer:

A

Step-by-step explanation:

Since each star is worth 50 points, if 5 stars are zapped that would convert to 250 points. Each level the number of stars increase by 5, level 6 would have 45 stars and so on.. With level 10 having 65 stars to complete.

4 0
3 years ago
Read 2 more answers
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