Answer:
b=50
Step-by-step explanation:
here x intercept is -1, so coordinate would be (-1,0)
we use two points (2,7.5) and (-1,0) to find the slope
slope=-7.5/-3 = 2.5
now let us use slope m =2.5 and point (-1,0) to get the y intercept
y=mx+b
0=2.5(-1)+b
b=2.5
plugging value of m and b in slope intercept form to get the equation
y=2.5x+2.5
Options:
H0 :
H0 : µ =12
H0 > 12> H1
None of these
Answer:
None of these
Step-by-step explanation:
The answer is
H0 : µ ≧ 12
Ha : µ<12
We formulate the null and alternative hypothesis here to state that battery life of the laptop lasts at least 12 hours(more than but not less, null hypothesis) or that it lasts less than 12 hours(alternative hypothesis).
The null hypothesis is the one being tested to know whether we would reject it or not in which case we choose the alternative hypothesis. To test the hypotheses, we do a t test using a significance level of say 0.05(95% confidence interval) and find our p value in order to compare and decide if the null hypothesis would be rejected or not based on statistical significance.
Number 6 :)
Perimeter is measuring the outside of a shape, so the two equations shown on the rectangle should be multiplied by two since there are other sides parallel to them which have the same length, meaning they have the same equation.
Glad I could help!
Answer:
The $52 jacket by 60(0.60) cents.
Step-by-step explanation:
To find how much percent off is each item. We would need to multiply 52 by 0.85 and 56 by 0.80. The work is below:
52*0.85=44.2
56*0.80=44.8
We can say that the $52 jacket costs less than the $56 jacket by a difference of 60(0.60) cents.
Hope this helps!!! PLZ MARK BRAINLIEST!!!