Length
Customary
1 mile (mi) = 1,760 yards (yd)
1 yard (yd) = 3 feet (ft)
1 foot (ft) = 12 inches (in.)
Metric
1 kilometer (km) = 1,000 meters (m)
1 meter (m) = 100 centimeters (cm)
1 centimeter (cm) = 10 millimeters (mm)
Volume and Capacity
Customary
1 gallon (gal) = 4 quarts (qt)
1 quart (qt) = 2 pints (pt)
1 pint (pt) = 2 cups (c)
1 cup (c) = 8 fluid ounces (fl. oz.)
Metric
1 liter (L) = 1,000 milliliters (mL)
Weight and Mass
Customary
1 ton (T) = 2,000 pounds (lb)
1 pound (lb) = 16 ounces (oz)
Metric
1 kilogram (kg) = 1,000 grams (g)
1 gram (g) = 1,000 milligrams (mg)
Time
1 year = 12 months
1 year = 52 weeks
1 week = 7 days
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds
Perimeter
Rectangle
P = 2l + 2w
Circumference
Circle
C = 2πr or C = πd
Area
Triangle
A = bh2 or A = 12bh
Square
A = s2
Rectangle
A = lw or A = bh
Parallelogram
A = bh
Circle
A = πr2
Trapezoid
A = 12(b1 + b2)h
Volume
Prism or cylinder
V = Bh
Pyramid or cone
V = 13Bh
Sphere
V = 43πr3
Surface Area
Cylinder
SA = 2πr2 + 2πrh
Sphere
SA = 4πr2
Additional Formulas
Simple interest
I = prt
Sum of interior angles of polygons
Sum of interior angles of a polygon = 180(n − 2)
Probability
Probability = Number of desired outcomesTotal number of outcomes
Pi
π ≈ 3.14 or π = 227
Length
Customary
1 mile (mi) = 1,760 yards (yd)
1 yard (yd) = 3 feet (ft)
1 foot (ft) = 12 inches (in.)
Metric
1 kilometer (km) = 1,000 meters (m)
1 meter (m) = 100 centimeters (cm)
1 centimeter (cm) = 10 millimeters (mm)
Volume and Capacity
Customary
1 gallon (gal) = 4 quarts (qt)
1 quart (qt) = 2 pints (pt)
1 pint (pt) = 2 cups (c)
1 cup (c) = 8 fluid ounces (fl. oz.)
Metric
1 liter (L) = 1,000 milliliters (mL)
Weight and Mass
Customary
1 ton (T) = 2,000 pounds (lb)
1 pound (lb) = 16 ounces (oz)
Metric
1 kilogram (kg) = 1,000 grams (g)
1 gram (g) = 1,000 milligrams (mg)
Time
1 year = 12 months
1 year = 52 weeks
1 week = 7 days
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds
Perimeter
Rectangle
P = 2l + 2w
Circumference
Circle
C = 2πr or C = πd
Area
Triangle
A = bh2 or A = 12bh
Square
A = s2
Rectangle
A = lw or A = bh
Parallelogram
A = bh
Circle
A = πr2
Trapezoid
A = 12(b1 + b2)h
Volume
Prism or cylinder
V = Bh
Pyramid or cone
V = 13Bh
Sphere
V = 43πr3
Surface Area
Cylinder
SA = 2πr2 + 2πrh
Sphere
SA = 4πr2
Additional Formulas
Simple interest
I = prt
Sum of interior angles of polygons
Sum of interior angles of a polygon = 180(n − 2)
Probability
Probability = Number of desired outcomesTotal number of outcomes
Pi
π ≈ 3.14 or π = 227
here there's something to help you in here for those who don't know the answer is
:19 - 28/n has a value of 15 when n=7
Step-by-step explanation:
Expression is
43 - 5n
3n - 5
6n - 28
19 - 28/n
when n = 7
43 - 5n = 43 - 5 * 7 = 43 - 35 = 8 ≠ 15
3n - 5 = 3*7 - 5 = 21 - 5 = 16 ≠ 15
6n - 28 = 6 * 7 - 28 = 42 - 28 = 14 ≠ 15
19 - 28/n = 19 - 28/7 = 19 - 4 = 15 = 15
19 - 28/n has a value of 15 when n=7
hopefully, this is right