2r-3.1=1.7 add 3.1
2r=1.7+3.1 divide by 2 to isolate r
2r/2=4.8/2
r=2.4
check
2(2.4)-3.1=1.7
4.8-3.1=1.7
1.7=1.7
4t+3.5=12.5 sub 3.5
4t=12.5-3.5 divide by 4
4t/4=9/4
t=9/4
check
4(9/4)+3.5=12.5
9+3.5=12.5
12.5=12.5
8m-5.5=10.1 add 5.5
8m=10.1+5.5 divide by 8
8m/8=15.6/8
m=1.95
check
8(1.95)-5.5=10.1
15.6-5.5=10.1
10.1=10.1
Answer:
E. 12 m
Step-by-step explanation:
b = 2×A/h
= 2×78/13
= 156/13
= 12 m
Answer:
40 ft/in
Step-by-step explanation:
There is 40 feet for every inch of the model
Answer:
0-2 .1 +6
Step-by-step explanation:
4
x
+
y
=
−
2
Subtract
4
x
from both sides of the equation.
y
=
−
2
−
4
x
Rewrite in slope-intercept form.
y
=
−
4
x
−
2
Use the slope-intercept form to find the slope and y-intercept.
Slope:
−
4
y-intercept:
−
2
Any line can be graphed using two points. Select two
x
values, and plug them into the equation to find the corresponding
y
values.
x
y
0
−
2
1
−
6
Graph the line using the slope and the y-intercept, or the points.
Slope:
−
4
y-intercept:
−
2
x
y
0
−
2
1
−
6
image of graph
