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nekit [7.7K]
3 years ago
13

Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula? Qu

adratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction
Mathematics
2 answers:
Likurg_2 [28]3 years ago
5 0

Answer:

a  =  1

b =  -1

c =  -2

Step-by-step explanation:

We reorder the equation in such way that let us see the usual

ax² + bx + c = 0

Then the original quation is:

-2 = - x + x² - 4               ⇒  0 = 2 - x + x² - 4        ⇒ x² - x  - 2  = 0

Now we are able by simply inspection to identify a, b . c comparing our equation with the general equation so :

a  =  1

b =  -1

c =  -2

umka21 [38]3 years ago
5 0

Answer:

i mean my guy the answer should be D then

Step-by-step explanation:

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The more questions you successfully answer on your first attempt, the more points you will receive. The more times you attempt a question, the more points you'll lose if you get it wrong.

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8 0
1 year ago
How many ways can Carlos choose 2 pizza toppings from a menu of 4 toppings if each topping can only be chosen once?
Ahat [919]

Answer:

30 different ways

Step-by-step explanation:

Hi

for the first topping she can choose 1 of 6 items

so she has 6 choices

and then the second topping she has 5 choices as each topping can only be chosen once

so it comes 6 * 5 = 30

3 0
3 years ago
Does this graph show a function?explain how you know.
DiKsa [7]
The answer is B! It passes the vertical line test
5 0
3 years ago
H-1-7-g=1 and h=12 please help me I’m so confused
miskamm [114]

Answer:

g = 3

Step-by-step explanation:

12−1−7−g=1

Step 1: Simplify both sides of the equation.

12−1−7−g=1

12+−1+−7+−g=1

(−g)+(12+−1+−7)=1(Combine Like Terms)

−g+4=1

−g+4=1

Step 2: Subtract 4 from both sides.

−g+4−4=1−4

−g=−3

Step 3: Divide both sides by -1.

−g /−1 = −3 /−1

g=3

4 0
2 years ago
Read 2 more answers
Trig questions:
navik [9.2K]
Question 1
Because the period is 2π, and the amplitude is 1obtain
f(x) = sin(x)
Because the horizontal shift is π, obtain
f(x) = sin(x - π)
Because the vertical shift is -4, obtain
f(x) = sin(x - π) - 4

Answer: 1. f(x) = sin(x - π) - 4

Question 2
The radius is 36/2 = 18 in.
1 revolution (360°) is the circumference, which is
2π(18) = 36π in
When the revolution is 62°, the distance traveled is
(62/360)*(36π) = (31/5)π in

Answer: 3. (31π)/5

Question 3.
Consider f(x) = 3cos(2x-π) - 1
f(0) = 3cos(-π) - 1 = -4
f(π/2) = 3cos(0) - 1 = 2
Rate of change = (2+4)/(π/2) = 12/π

From the graph, the rate of change of g(x)  is
3/(π/2) = 6/π

Consider h(x) = sin(x) - 4
h(0) = 0 - 4 = -4
h(π/2) = 1 - 4 = -3
Rate of change = (-3+4)/(π/2) = 2/π
Therefore h(x) has the smallest rate of change

Answer: h(x)

8 0
3 years ago
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