MATHEMATICS HIGH SCHOOL

-5X - 8y = 3
6x + 3y =3
Solve using elimination ?

Answers

Answer 1
Answer:

Answer:

for the first one its x=30

for the second one its x=6

Step-by-step explanation:

its x=30 because at the end if you do the problem yourself, you would have to multiply 5×6 which is 30.

im not sure why its x=6 on that one i might be wrong but i did it but im also confused on it but i tried so yeah maybe it is.

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Read the complete problem before answering. Tang bought m of rope. Rope costs $1.30 a meter. How much did Tang spend? A student solved the problem this way. m = 1.5 m Let n represent the amount Tang paid for rope. n = 1.5 × $1.30 n = $1.95 Tang spent $1.95. Use a similar strategy to solve this problem. Jeff bought yards of blue denim and yards of black denim. Denim cost $4.30 a yard. How much did Jeff spend on denim? A. $3.50 B. $7.80 C. $12.90 D. $15.05
What is the equation of the line passing through the points (–5, –2) and (3, 14) in slope-intercept form?

Please help, thank you!​

Answers

Answer:

I think B

Step-by-step explanation:

Answer:

A.) 0.32

Step-by-step explanation:

√(16) is 4 but h = 2 which is 1/2 of the answer

so √(40) is 6.324 and 0.32 is the closet answer

Least to greatest 4.3,5.5, 61/6, 15/4, 43/8

Answers

It would be

15/4 < 4.3 < 43/8 < 5.5 < 61/6

What is 9 times 3/4?

Answers

When multiplying a whole number by a fraction, put the whole number as a fraction over one. 9/1 times 3/4. When multiplying fractions, you multiply straight across. 9(3)=27 and 1(4)=4. The new fraction is 27/4.

What is the discriminant of the quadratic equation 0 = –x^2 + 4x – 2?–4

8

12

24

Answers

from this equation : 
a: the coefficient of x^2 & b: the coefficient of x  & c: the last term 
so a=-1 ; b=4 ; c=-2;
discriminant = b^2 -4*a*c
 = (4)^2 -4(-1)(-2)
= 8 

The Mathalot Company makes and sells textbooks. They have one linear function that represents the cost of producing textbooks and another linear function that models how much income they get from those textbooks. Describe the key features that would determine if these linear functions ever intercepted.

Answers

The question is asking to explain or described the key features that would determine if the linear functions is ever intercepted base on the said equation and the function, I would say that the answer would be If two linear equations have different slopes, and are in the same plane, they WILL intersect at ONE point (they will have a unique solution).

The probability that Edward purchases a video game from a store is 0.67 (event A), and the probability that Greg purchases a video game from the store is 0.74 (event B). The probability that Edward purchases a video game (given that Greg has purchased a video game) is 0.67. Which statement is true?A. Events A and B are independent because P(A|B) = P(A)
B. Events A and B are dependent because P(A|B) = P(A)
C. Events A and B are independent because P(A|B) = P(B)
D. Events A and B are dependent because P(A|B) P(A)

Answers

The statement that is true is Option (A) Events A and B are independent because P(A|B) = P(A).

What is conditional probability ?

In probability theory, conditional probability is a measure of the probability of an event occurring, given that another event has already occurred. In conditional probability, we always deal with two or more mutually exclusive events.

How to identify the correct statement ?

Given that the probability that Edward purchases a video game from a store is 0.67 (event A), and the probability that Greg purchases a video game from the store is 0.74 (event B). The probability that Edward purchases a video game (given that Greg has purchased a video game) is 0.67.

Thus we can see that both the events A and B are mutually exclusive events . Also A and B are both independent events means they do not have any relation of simultaneously occurring.

P(A/B) means that the probability that A will occur given that B has already occurred.

As both the events are independent, therefore when A will occur, it will have no relationship with event B.

∴ P(A/B) = P(A) .

Thus the statement that is true is Option (A) Events A and B are independent because P(A|B) = P(A).

To learn more about conditional probability, refer -

brainly.com/question/11896081

#SPJ2

Events A and B are independent because P(A|B) = P(A).

Given two events A and B, the conditional probability P(A|B) is the probability that A happends, knowing that B has happened. If the two events are dependent, knowing that B has already happened will change the probability of A. If, instead, knowing that B has happened doesn't change the probability of A, it means that A doesn't depend on B, and thus the events are independent.
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