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erik [133]
2 years ago
7

The solution to a quadratic are called

Mathematics
1 answer:
vova2212 [387]2 years ago
4 0

Answer:

roots

Step-by-step explanation:

A quadratic equation with real or complex coefficients has two solutions, called roots.

Roots are also called x-intercepts or zeros. ... The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero. Therefore, to find the roots of a quadratic function, we set f (x) = 0, and solve the equation, ax2 + bx + c = 0.

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The AAA system contains 3 independent components in parallel, each with probability of failure 0.4. Find the expected number of
Gre4nikov [31]

Answer:

Step-by-step explanation:

For each component, there are only two possible outcomes. Either it fails, or it does not. The components are independent. We want to know how many outcomes until r failures. The expected value is given by

E = \frac{r}{p}

In which r is the number of failures we want and p is the probability of a failure.

In this problem, we have that:

r = 1 because we want the first failed unit.

p = 0.4[\tex]So[tex]E = \frac{r}{p} = \frac{1}{0.4} = 2.5

The expected number of systems inspected until the first failed unit is 2.5

8 0
3 years ago
The total weight of 15 containers on a freight train is 330 tonnes. What is the mean weight of the containers?
svetoff [14.1K]

Answer:

the mean weight is 22 tonnes

Step-by-step explanation:

mean=total sum/number of numbers you added

in this case the question already gave you the total so just divide right away

mean weight= 330/15 = 22 tonnes

6 0
3 years ago
If anyone can answers these i will give them a brainlist.
Levart [38]

Answer:

1. X= 25.9 meters

2.X= 21.3 meters

Step-by-step explanation:

1. Tan 50°= X/21

2. Tan 12°= X/100

4 0
3 years ago
Greater than 7 tens and less than 8 tens. The number has 4 ones
prohojiy [21]
Answer is 74. Greater than 70 less than 80 so some where in the 70s. It has 4 ones so it would be 74.
6 0
3 years ago
Find all values of k so that each trinomial <br> 2 x^2+ kx+12
n200080 [17]
K can be 10,11,14,25

Work
(2x+4)(X+3)
(2x+3(X+4)
(2x+6)(X+2)
(2x+2)(X+6)
(2x+1)(X+12)
(2x+12)(X+1)
6 0
3 years ago
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