Can y’all find the slope for me plz

Which of the expressions below can be factor using the difference of squares method

25x^2 - 64y^2

The first thing you can do is look for a subtraction sign. The word difference implies subtraction, so you can rule out any expressions that add terms. Secondly, you can look for squares. 17x^2 - 23y^2 is a subtraction expression, but 17 and 23 are not squares. However, 25x^2 - 64x^2 is a subtraction expression and its terms are squares. 25 = 5x5, 64 = 8x8. Hope this helps!

5 0

3 years ago

HELP I WILL MARK BRAINLEST

OverLord2011 [107]

its only showing "help i will mark brainliest"..?

8 0

3 years ago

Simplify the expression 9−8b+6b 9−8b+6b . 9−8b+6b=?? haha last one XD

Vladimir79 [104]

You should get it now from my previous answer.

But to apply it.

9 - 8b + 6b
9 + (-8b + 6b) <- Collect like bases (b)
9 + (-2b)
9 - 2b

Therefore it simplified is 9 - 2b

5 0

3 years ago

Once a customer fills the car with gas at one station, that customer cannot then go fill the same car with gas at another statio

cluponka [151]

Answer:

yes :- P ( Ei ∩ Ej ) = 0

Step-by-step explanation:

These are mutually exclusive events

that is, a customer can only go to a gas station to fill his car with gas par time

P(E1) = 1/4

P(E2) = 1/4

P(E3) = 1/4

P(E4) = 1/4

summation of the four probabilities give 1

6 0

2 years ago

1. IQ scores of statistics students have a standard deviation less than 15. A. H0:σ≤15, H1:σ>15 B. H0:σ≥15, H1:σ<15 C. H0:

grandymaker [24]

Answer:

1) For this case we want to check if the population deviation is less than 15( alternative hypothesis) and the system of hypothesis are:

H0: $\sigma \geq 15$

H1: $\sigma$

B. H0:σ≥15, H1:σ<15

2) For this case we want to check if the population mean $\mu$ is at most 70000 (alternative hypothesis) and the system of hypothesis are:

H0: $\mu \geq 70000$

H1: $\mu$

C. H0:µ≥70,000, H1:µ<70,000

3) For this case we want to check if the population proportion $p$ of all internet users that make online purchases is higher than 0.5 (alternative hypothesis) and the system of hypothesis are:

H0: $p \leq 0.5$

H1: $p >0.5$

D. H0:p≤0.5, H1:p>0.5

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

1) For this case we want to check if the population deviation is less than 15( alternative hypothesis) and the system of hypothesis are:

H0: $\sigma \geq 15$

H1: $\sigma$

B. H0:σ≥15, H1:σ<15

2) For this case we want to check if the population mean $\mu$ is at most 70000 (alternative hypothesis) and the system of hypothesis are:

H0: $\mu \geq 70000$

H1: $\mu$

C. H0:µ≥70,000, H1:µ<70,000

3) For this case we want to check if the population proportion $p$ of all internet users that make online purchases is higher than 0.5 (alternative hypothesis) and the system of hypothesis are:

H0: $p \leq 0.5$

H1: $p >0.5$

D. H0:p≤0.5, H1:p>0.5

7 0

3 years ago