Answer:
#4is all real#s above -2 for the range
Step-by-step explanation:
Wow! I never had problems this hard in middle school!
But you can do it!
First, we need to figure the number of flips Sara can do based on Jenny's.
Jenny = 120 and Sara - 120 x 3/8 (because she is only 3/8 of Sara's)
Calculate 120 x 3/8 = 45 flips
Now we know that Sara increased her amount of flips by 3 (45 +3 = 48)
And we know that Jenny decreased hers by 12 (120 - 12 = 108)
So now we have a ratio of 48:108, but we need to simplify that with factoring.
I am going to divide first by 2.
24:54
Then 2 again...
12:27
How about 3?
4:9
I think that is as far as we can go.
Sara is now doing 4 out of every 9 that Jenny does.
Check it!
108 (Jenny) x 4/9 = 48 (Sara) Yes! It checks.
Answer:
1)461,58sm²
2)53,38sm²
Step-by-step explanation:
p=3,14
1) r=14sm
p×r²=14²×3,14=615,44
S1=615,44
r=7sm
p×r²=7²×3,14=153,86
S2=153,86
The painted surface of the circle:
S1-S2=615,44-153,86=
461,58
2) r=9sm
p×r²=9²×3,14=254,34
S1=254,34
r=8sm
p×r²=8²×3,14=200,96
S2=200,96
The painted surface of the circle:
S1-S2=254,34-200,96=53,38
Answer:
1)461,58sm²
2)53,38sm²
Answer:
There are four ways to represent an inequality: Equation notation, set notation, interval notation, and solution graph.
What?wait a minute I think it’s 365