let the goldfish be x and the guppies be y
4x + 3y = 29...equ(1)
3x + 5y = 30...equ(2)
multiplying equation 1 by 5 and equation 2 by 3
20x + 15y = 145...equ(1)
9x + 15y = 90...equ(2)
subtracting equation 2 from 1
11x = 55
∴x = 5
substituting the value of x into equation
4(5) + 3y = 29
20 + 3y = 29
3y = 9
∴y =3
Please mark brainliest
Answer is 4 units
Explanation:
See the image as mathematical signs can’t be written here
Answer:
72
Step-by-step explanation:
Answer:
(0.2278, 0.3322)
Step-by-step explanation:
Given that out of 400 people 112 agree and 288 disagree
Proportion of people agreeing = 

For confidence interval 90% we have critical value as
1.645
Margin of error =1.645*SE
=
Confidence interval 