Answer:
13. x = 12
Step-by-step explanation:
cross multiply
12x = 144
x = 12
Answer:
yes, 10
Step-by-step explanation:
For a graph to represent a proportional relationship, you need 2 things:
1) The graph is a straight line that passes through the origin.
2) The line is not vertical or horizontal.
Here you have a line that is not vertical or horizontal; and passes through the origin (the point (0, 0) ). Therefore, this line represents a proportional relationship.
To find the constant of proportionality, look for any point except the origin, and divide its y-coordinate by its x-coordinate. The constant of proportionality is also the slope of the line.
For example, pick (1, 10).
constant of proportionality = 10/1 = 10
Answer: yes, 10
Answer:
2t-7
Step-by-step explanation:
distribute the 2, to the t and the -4
you should have 2t-8+1
then you add the 1 to the -8 and you get -7
resulting in 2t-7 being the answer
Answer:
Step-by-step explanation:
15 boys + 12 girls = 27 students
15:27 = 5:9
Answer:
130 ft^2
Step-by-step explanation:
SA= surface area
SA= 2*l*w + 2*l*h + 2*w*h
l= length = 10
w= width =5
h = height = 1
SA= 2*l*w + 2*l*h + 2*w*h
SA= 2*10*5 +2*10*1+2*5*1
SA= 100+20+10
SA= 130 ft^2
