<u>Answer:</u> The probability that Xavier and Yvonne can solve a problem but Zelda cannot is 
<u>Step-by-step explanation:</u>
We are given:
Probability of success of Xavier, 
Probability of failure of Xavier, 
Probability of success of Yvonne, 
Probability of failure of Yvonne, 
Probability of success of Zelda, 
Probability of failure of Zelda, 
We need to calculate:
The probability that Xavier and Yvonne can solve the problem but Zelda cannot, we use:
Hence, the probability that Xavier and Yvonne can solve a problem but Zelda cannot is
Answer:
Brian have £105 left.
Step-by-step explanation:
Given,
Amount earned by Brian per week = £168
Fraction spent on rent = 1/8
Amount spent on rent = 1/8 x 168
Amount spent on rent = £42
Fraction spent on food = 1/8
Amount spent on food = 1/8 x 168
Amount spent on food = £21
Amount left = Amount earned - amount spent on rent - amount spent on food
Amount left = 168 - 42 - 21
Amount left = £105
Brian have £105 left.
I hope this helps you
1. Greater than/More than
2. Fewer than/less than
3. At least/No fewer than
4. No more than/Not above
Answer:
C
Step-by-step explanation:
∆=b^2-4a*c=1-4*3*(-10)=121>0 có 2x
x1=-b+sprt∆/2a=1+sprt121/2*3=2
x2=-b-sprt∆/2a=1-sprt121/2*3=-5/3
Adjacent means next to or adjoining something else. therefore an adjacent angle to <DGE would be <HGJ
