Answer:
For C i would say that it has a widely used floating-point system in which the numbers are expressed as products and it has an appropriate power.
Im new to this math so im trying to figure out a and b
This is eassy, I'll show you
From 81%, we get fraction 81/100
After reduced 81 fraction 100, we get...
0,81 [Change into decimal]
Answer:
The answer would be A!
Step-by-step explanation:
There's a lot of steps so idk if you need them or not.
Circumference of circle = 2 π r
Now , Substuting the values
Circumference of circle = 2 × 3.14 × 35
Circumference of circle = 6.28 × 35
Circumference of circle = 219.8 inches
Nearest 10ᵗʰ of 219.8 is <u>220</u>
Hence , the Circumference of circle is 220 Inches.
Answer:
18
Step-by-step explanation:
Since this is a multiple choice question, I will employ the guess and check method - meaning I will check each answer one by one.
Variable x = dimes = $0.10
Variable y = quarters = $0.25
Set up a system of equations:
x + y = 38
x(0.10) + y(0.25) = 6.80
Plug in each choice into the second equation. You can find the number of quarters that correspond to each number of dimes by using the first equation.
20 dimes:
20 + y = 38
y = 18
20(0.10) + 18(0.25) = 6.80
2 + 4.5 = 6.80
6.5 does not equal 6.80
Because dimes (x) are worth less than quarters (y), this result tells us the answer will be less than 20 dimes as with 20 or more we have less than $6.80. Another example just to show this is true:
38 dimes:
38 + y = 38
y = 0
38(0.10) + 0(0.25) = 6.80
3.8 + 0 = 6.80
3.8 does not equal 6.80.
Since x is worth less than y, we need more of y rather than x. Adding more x will only mean we will get a lower price. Adding more y will mean we get a higher price which is what we need. So only solve for x that is less than 20.
6
6 + y = 38
y = 22
6(0.10) + 32(0.25) = 6.80
0.60 + 8 = 8.60
8.60 does not equal 6.80.
This result is higher than what we wanted (6.80) which means we need more x. Now we only have to solve for x numbers that are greater than 6 and less than 20.
18
18 + y = 38
y = 20
18(0.10) + 20(0.25) = 6.80
1.8 + 5 = 6.8
6.8 does equal 6.8.
Correct!
