MATHEMATICS HIGH SCHOOL

Pls help this is due soon If the discriminate of a quadratic equation is negative___.a.there will be 2 solutions either of which may be positive or negative

b.there will be only one solution

c.there will be 2 solutions but they will both be negative

d.there will be 2 solutions but they will both be positive
the
e.none of these​

Answers

Answer 1
Answer:

Answer:

e. none of these

Step-by-step explanation:

The correct answer is e. none of these because a negative discriminant means that there will be no solutions at all!

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Answers

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The equation of the line of best fit of a scatter plot is y = 6x − 9. What is the slope of the equation? –6 –9 9 6

Answers

Answer:

D. 6

Step-by-step explanation:

The line of best fit represents the relation between two variables, usually indicated as x and y, where "x" is the independent variable and "y" is the dependent variable.

The general form of equation of the line of fit y = mx + b, where "m" represents the slope and b represents the y-intercept.

The given line of best fit of a scatter plot is y = 6x - 9

Now compare the given equation with the general and find the slope.

When we comparing, we get m = 6 which is the slope of the given equation.

Therefore, answer is D. 6
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In ΔMNO, the measure of ∠O=90°, the measure of ∠M=11°, and NO = 80 feet. Find the length of OM to the nearest tenth of a foot. Please show work.

Answers

Answer:

OM = 411.56 ft

Step-by-step explanation:

tan 11 = 80/x

0.1944 = 80/x

x = 411.56 ft

The product of some negative number and 10 less than three times that number is 8

Answers

So,

"The product of some negative number"
n *

"and 10 less than three times that number"
-10 + 3n or 3n - 10

"is 8"
= 8
n * (3n - 10) = 8
n(3n - 10) = 8

Distribute.
3n^2 - 10n = 8

Subtract 8 from both sides.
3n^2 - 10n - 8 = 0

Factor.
(3n + 2)(n - 4) = 0

Set each factor to zero.
3n + 2 = 0
n - 4 = 0

There are two apparent solutions, but we must remember that the problem says that the number is negative.  We must therefore discard the second equation as extraneous.

3n + 2 = 0

Subtract 2 from both sides.
3n = -2

Divide both sides by 3.
n = (-2)/(3)

A lamp is on sale, and its price is reduced from $80 to $50. What is the percent of decrease? Select from the drop-down menu to correctly complete the statement.

Answers

The percentage decrease is equal to the change in price ( the decreased amount) divided by the original amount, then multiplied by 100. We have,

Percentage decrease = (80-50)/(80)=0.375*100=37.5 %

ANSWER: 37.5%
$80 - $50 = $30

$30 * 100 / $ 80 = 37.5%

answer: 37.5% of decrease.

The probability that a given urine sample analyzed in a pathology lab contains protein is 0.73 (event A). The probability that the urine sample contains the protein albumin is 0.58 (event B). The probability that a sample contains protein, given that albumin is detected, is 1. Which statement is true?
a. Events A and B are dependent because P(A|B) =P(A).
b. Events A and B are dependent because P(A| B) ≠ P(B).
c. Events A and B are dependent because P(A|B) = P(A) + P(B).
d. Events A and B are dependent because P(A| B)≠ P(A).
e.Events A and B are dependent because P(A|B) = P(A).

Answers

The right answer for the question that is being asked and shown above is that: "e.Events A and B are dependent because P(A|B) = P(A)." The probability that a sample contains protein, given that albumin is detected, is 1. The statement that is true is this events A and B are dependent because P(A|B) = P(A).
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