7.4x-9.2=2.6+5.2
Simplify
7.4x-9.2=7.9
add 9.2 to both sides
7.4x=17.1
divide both sides by 7.4
x=<span>2.31081081081 (about)</span>
Answer:
grace by 1 lap.
Step-by-step explanation:
<u>Grace</u><u>.</u>
ran 8 laps
walked 3 laps
<u>Tami</u><u>.</u>
ran 8/2 laps which is 4
walked 3•2 laps which is 6.
add all of them together
Grace has 11 while Tami has 10.
11-10 is 1
37.99/12= 3.165
So the price per pound would be $3.17
^^^^^Simplify
Estimate
Step 1: Estimate the square root of 2:
1.4x1.4=1.96
1.41x1.41=1.9881
1.42x1.42=2.0164
1.9881 is closer to 2 than 2.0164
Square root of 2 is about 1.41
Step 2: Multiply the answer in step 1 by 8
1.41x8=11.28
8 times square of 2 is about 11.28
Square root of 128 is about 11.28
If you put square root of 128 in a calculator it would say 11.31 something...
All the given points are collinear, so we have ...
AB +BC = AC
BC +CS +SD = BD
The problem statement tells us
BD = AC
BC +CS +SD = AB +BC . . . . . substituting for BD and AC
BC +CS +2 = 4 +BC . . . . . . . . substituting given lengths
CS = 2 . . . . . . . . . . . . . . . . . . . subtract (2+BC)
CS is the radius of Circle C, so its diameter is twice that: 4. The radius of Circle D is the diameter of Circle C plus SD, so is 4 +2 = 6. The diameter of Circle D is twice that: 12.
The diameter of Circle C is 4.
The diameter of Circle D is 12.
