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.
The volume of premium antifreeze to be used is 60 gallons.
The volume of water to be used is 120 gallons
<h3>What is a percentage?</h3>
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Let the volume of 60% pure antifreeze be used to make 20% pure antifreeze.
= x gallons
The volume of 20% pure antifreeze = 180 gallons
For 60% pure antifreeze:
C₁ = 60% , V₁ = x gallons
For 20% pure antifreeze :
C₂ = 20% , V₂ = 180 gallons
Applying,
C₁V₁ = C₂V₂
60 × x = 20 × 180
x = 60 gallons
The volume of 60% pure antifreeze used = 60 gallons.
The volume of water to be used.
= 180 - 60 gallons
= 120 gallons
Thus,
The volume of premium antifreeze to be used is 60 gallons.
The volume of water to be used is 120 gallons
Learn more about percentages here:
brainly.com/question/11403063
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Answer:
3x³+10x²-8x-2
Step-by-step explanation:
(-3x³+7x²-8x+11)-(-3x²+13)
- remove unnecessary parentheses
-3x³+7x²-8x+11-(-3x²+13)
-3x³+10x²-8x+11-13
-3x³+10x²-8x-2
Answer:
Step-by-step explanation:
Set up a proportion
693 miles / 11 hours = 315 miles / x hours
Notice that the numerators both have the same units (miles).
Cross multiply
693x = 11 * 315 Combine
693x = 3465 Divide by 693
x = 5
It will take him 5 hours to go 315 miles
Answer:
40
Step-by-step explanation:
angle CHA is equal to angle HGB because they are alternate interior angles.
This means that angles CHA and AGH are supplementary, add up to 180 degrees.
So, 5x + x + 12 =180
6x = 168
x = 28
<CHG = x + 12 = 28 + 12 = 40
