90% = 90/100
x/40=90/100 cross multiply
100x = 3600 divide by 100 on both sides
x=36
Max needs to get at least 36 questions correct to earn a 90&
Answer:
(-1/2,5)
Step-by-step explanation:
Here is the complete question
Find the midpoint of the segment with endpoints of (1, 4) and (-2, 6) and enter its coordinates as an ordered pair. If necessary, express coordinates as fractions, using the slash mark ( / ) for the fraction bar.
Solution
The mid-point of a line is given by ((x₁ + x₂)/2,(y₁ + y₂)/2). From the question, x₁ = 1, y₁ = 4, x₂ = -2 and y₂ = 6. So,
((x₁ + x₂)/2,(y₁ + y₂)/2) = ((1 + (-2))/2,(4 + 6)/2)
= ((1 - 2)/2,10/2)
= (-1/2,10/2)
= (-1/2,5)
Let us assume rent for a child = $x per hour and
Rent for an adult = $ y per hour.
We are given number of children = 3.
Number of adults = 1.
Rent for 3 children at the rate $x per hour = 3*x = 3x.
Rent for 1 adult at the rate $y per hour = 1*y = y.
We are given number of hours of rafting trip = h hours.
Total cost of 3 children and 1 adult for h hours =h times (Cost of 3 children and 1 adult for each hour).
= h*(3x+y).
Therefore, h(3x+y) is the final expression for the total cost of h hours of rafting trip.
If you are given values of x, y or h, you can plug those values in this expression.
Answer:
The account interest rate is 0.80%
Step-by-step explanation:
A=P(1+r/100)^10
1462=1350(1+r/100)^10{divide both sides by 1350}
1462/1350=(1+r/100)^10{find the 10th root of both sides}
1.00800=1+r/100{multiply through by 100}
100.800=100+r
r=100.800-100
r=0.80%
