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3 years ago

Which are the solutions of the quadratic equation? x2 = –5x – 3 –5, 0 5, 0

Mathematics

2 answers:

qwelly [4]3 years ago

7 0

the correct answer is B.... on ED.....

just took the test....

Lunna [17]3 years ago

3 0

From looking at the image I've provided, you could see that the solution of that quadratic equation is -5 or 0.

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What is x if x squared minus 6x equals negative 25

Vilka [71]

Answer:

Step-by-step explanation:

x2 - 6x = - 25

Rearrange the equation and let it be equal to 0

x2 - 6x +25 = 0

Using the Almighty formula

x =( -(-6) + √9)/2 or (-(-6) - √9)/2

x =4.5 or-1.5

x = 4.5

8 0

2 years ago

Which graph shows a linear function?

maw [93]

That one is an absolute I can’t see the other ones

7 0

2 years ago

The denarius was a unit of currency in ancient rome. Suppose it costs the roman government 101010 denarii per day to support 444

givi [52]

<u>the correct question is</u>

The denarius was a unit of currency in ancient rome. Suppose it costs the roman government 10 denarii per day to support 4 legionaries and 4 archers. It only costs 5 denarii per day to support 2 legionaries and 2 archers. Use a system of linear equations in two variables. Can we solve for a unique cost for each soldier?

Let

x-------> the cost to support a legionary per day

y-------> the cost to support an archer per day

we know that

4x+4y=10 ---------> equation 1

2x+2y=5 ---------> equation 2

If you multiply equation 1 by 2

2*(2x+2y)=2*5-----------> 4x+4y=10

equation 1 and equation 2 are the same

The system has infinite solutions-------> Is a consistent dependent system

therefore

<u>the answer is</u>

We cannot solve for a unique cost for each soldier, because there are infinite solutions.

5 0

3 years ago

A box of Georgia peaches has 3 bad and 12 good peaches. (a) If you make a peach cobbler of 12 peaches randomly selected from the

Eddi Din [679]

Answer:

a) 0.21% probability that there are no bad peaches in the peach cobbler.

b) 99.79% probability of having at least 1 bad peach in the peach cobbler

c) 7.91% probability of having exactly 2 bad peaches in the peach cobbler.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the peaches are chosen is not important. So the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

(a) If you make a peach cobbler of 12 peaches randomly selected from the box, what is the probability that there are no bad peaches in the peach cobbler?

Desired outcomes:

12 good peaches, from a set of 12. So

$D = C_{12,12} = \frac{12!}{12!(12 - 12)!} = 1$