Answer: =
6x^2−5x−6
Step-by-step explanation: Multiply each term in one expression times each term in the other, then simplify by combining like terms.
Here are the like terms : =(3x+2)(2x−3)=3x(2x+3x(−3)+2(2x)+2(−3)
= 6x^2−9x+4x−6
=6x2−5x−6
Answer: b. The 99% interval is longer.
Step-by-step explanation:
The formula to find the confidence interval for mean :
, where is the sample mean , is the population standard deviation , n is the sample size and is the two-tailed test value for z.
For 95% confidence interval the two-tailed test value for z is .
For 99% confidence interval the two-tailed test value for z is .
Since the interval is directly proportion al to the z-value , so it is clear that the width of the interval would be longer with z =3 than z=2.
i.e. The <u>99% interval</u> is longer than 95% confidence interval .
Answer:
Both fractions are already in the simplest form.
Portuguese translation: Ambas as frações já estão na forma mais simples.
B, Paco won the race. Juan’s time was 15, Packs was 12, Pedros was 13. And Brads was 17.
Answer:
m<1 = 76°
m<2 = 104°
m<3 = 76°
m<4 = 104°
Step-by-step explanation:
m<1 and m<3 are vertical angles so, these angles have the same measure of 76°. m<2 and m<4 are also vertical angles which have the same measure. To find m<2, use m<1. m<1 and m<2 are <u>supplementary angles</u> which add up to 180°. Subtract 180 from 76 which is 104.