You are buying 2 items so let's use two different variables to represent each:
p = number of tubes of paint
b = number of disposable brushes
cost = price per item × number of items
Equations from information given:
4p + 0.50b = 20 ← from the first 2 sentences
2p = b ← if there are twice as many brushes as paint tubes you need 2 times paint tubes to equal number of brushes
Solve the problem by using substitution... 1b equals 2p so replace b with that:
4p + 0.50(2p) = 20
4p + 1p = 20 ← 0.50 is half so half of 2p is 1p
5p = 20 ← combine like terms
p = 4 ← divide both sides of the equation by 5
Recall the equation 2p = b replace p with 4
2(4) = b
8 = b
ANSWER:
You purchased 4 tubes of paint and 8 disposable brushes.
Answer:
Every quadrilateral's 4 angles add up to 360 degrees.
The four angles would be 100° + 7x +37 + 100° + 7x +37 = 360°
200° + 14x + 74° = 360°
14x = 360° - 274
14x = 86
x = 6.1428571429
Step-by-step explanation:
Answer:
i beleive 9 times
Step-by-step explanation:
50÷5.50=9.09
Table
Minutes Peter Distance Yvetta Distance
1 265 249
2 530 498
3 795 747
4 1060 996
5 1325 1245
Sample Calculation
Peter: Time * distance / minute = 5 minutes * 265 feet / minute = 1325
Yvetta: Time * distance/ minute= 4 minutes * 249 feet / minute = 996
Graph
When you graph these two swimmers distance, you should get a straight line giving (0,0) for both of them.
Red: Peter
Green: Yvette
Only points 4 and 5 have been plotted for each of them. You cannot really tell the difference for the other points.
Any arbitrary bisector from a vertex to an opposite side divides any given triangle into proportional ratios. In this case
9/(2x-1)=15/(3x) cross multiply
27x=30x-15 subtract 30x from both sides
-3x=-15 divide both sides by -3
x=5