The answer is D5x4 is 20 +20 from already on his MP3 player =40
Answer:
(2x+5)(x+4)
Step-by-step explanation:
2x²+13x+20
_5_+_8_=13
_5_×_8_=(2x20)
now it can be re-written as
2x²+5x+8x+20
which can be factored to be:
(2x+5)(x+4)
Answer:
The correct option is e) ![H_0: \mu_1=\mu_2\ and\ H_a:\mu_1\neq \mu_2](https://tex.z-dn.net/?f=H_0%3A%20%5Cmu_1%3D%5Cmu_2%5C%20and%5C%20H_a%3A%5Cmu_1%5Cneq%20%5Cmu_2)
Step-by-step explanation:
Consider the provided information.
Ten college students reported that they consume coffee but do not smoke cigarettes; these comprise the Coffee-Only group, or Group 1. Another ten college students reported that they consumed coffee and also smoked cigarettes; these comprise the Coffee + Cigarettes group, or Group 2.
The null hypothesis tells the population parameter is equal to the claimed value.
If there is no statistical significance in the test then it is know as the null which is denoted by
, otherwise it is known as alternative hypothesis which denoted by
.
The amount of coffee that "coffee drinkers" consume on a weekly basis differs depending on whether the coffee drinker also smokes cigarettes.
Thus, the required hypothesis are: ![H_0: \mu_1=\mu_2\ and\ H_a:\mu_1\neq \mu_2](https://tex.z-dn.net/?f=H_0%3A%20%5Cmu_1%3D%5Cmu_2%5C%20and%5C%20H_a%3A%5Cmu_1%5Cneq%20%5Cmu_2)
Therefore, the correct option is e) ![H_0: \mu_1=\mu_2\ and\ H_a:\mu_1\neq \mu_2](https://tex.z-dn.net/?f=H_0%3A%20%5Cmu_1%3D%5Cmu_2%5C%20and%5C%20H_a%3A%5Cmu_1%5Cneq%20%5Cmu_2)
Answer:
r=−9.403283,−6.348173,0.751456
Step-by-step explanation:
Let's solve your equation step-by-step.
7(r3+15r2+48r−44)=r+6
7r3+105r2+336r−308=r+6
Step 1: Subtract r+6 from both sides.
7r3+105r2+336r−308−(r+6)=r+6−(r+6)
7r3+105r2+335r−314=0
Step 2: Use cubic formula.
r=−9.403283,−6.348173,0.751456
Answer:
(6 , 29/8)
Step-by-step explanation:
Let divide the segment into 8 equal parts (since 3 (CE) + 5(ED) = 8)
(11 - 3) / 8 = 8/8 = 1. So each x-segment will be 1 unit
(3 - 4) / 8 = -1/8. So each y-segment shall be -1/8 unit.
CE will represent 3/8 of the relative line.
Ex = 3 + 1 * 3 = 3 + 3 = 6
Ey = 4 + (-1/8) * 3 = 4 - 3/8 = 29/8
(6 , 29/8) is the final answer