Problem 42 is 4 because 2(3+4)= 14 So 2x3 is 6. (14-6=8) so them 2x4 is 8.
Problem 43 is 6 because 5(6+3)= 45 So 5x3 is 15 (45-15=30) and 5x6=30
In problem 44 7x4=28 and 4x5=20 so you do 28+20 to get 48. (48 divided by 4 is 12) So 12-7 is 5. 5 is the answer
Problem 45: 6x4=24 and 6x3=18. 24+18=42. (42 divided by 6 is 7) so the last one could be anything added together to make 7.
Ex: 6+1 5+2 4+3
Answer:
24.5
Step-by-step explanation:
Year 2000 would be 1, so year 2016 would be 17
Your equation is 1.5x - 1, and since we have x = 17, we simply plug it in:
1.5(17) - 1
25.5 - 1
24.5 is our estimated population using the line of best fit.
Answer:
the answers are A,B,D and E
Step-by-step explanation:
Answer:
Step-by-step explanation:
1. 0.4y = x is a direct proportion. It'd be more appropriate to write this as
y = x / 0.4, or y = 2.5x, in which case 2.5 is the constant of proportionality.
2. x = 1 - 2y is not a direct proportion because of the offset (1). A line representing a direct proportion must go through the origin (0, 0); this particular line does not do that.
p + 2 = 5 ==> p = 3
3p + 2 = p + 3 ==> 2p = 2 ==> p = 1
3k + 5 = 2k + 2 ==> k = -3 (niemożliwe; lewa strona wagi ma większą wagę)
2w + 10 = 4w + 7 ==> 2w = 3 ==> w = 3/2
d + 9 = 3d + 2 ==> 2d = 7 ==> d = 7/2
W drugim zadanie każda litera reprezentuje wagę jednego z obiektów. Na przykład 3k + 4 reprezentuje całkowitą wagę 3 kół i 4 ciężarów, każdy o wadze 1 kg.
Trzecie zadanie to tylko połączenie dwóch pozostałych.
