dians midterm practice (math)

A pulley that measures 15 and across turns at 1,020 rpm and drives a largely pulley at the rate of 1,000 RPM. What is the diameter of the larger pulley in this inverse relationship

15.15 in

3 times the sum of a number and 5 is 21

(Write equation then solve)

3(x + 5) = 21

X = 2

Solve. 5/8p + 2 = 2/3p

48 = p

Solve. 25x - 15x = 80

X = 8

Solve. n/3 = 6/5

n = 18/5

Solve. 0.8x + 0.3 = 4.4

X = 5/125

Simplify. 6 - (4x - 3)

9-4x

The number of kilograms of water in a human body varies directly as the mass of the body. An 84-kg person contains 56 kg of water. How many kilograms of water are in a 90-kg person?

X 56kg/56kg = 90•84/56 • kg•kg/kg

Covert. 1,400cm to m

14m

Covert. 15.23dm to mm

1,523 mm

Convert. 24hr =? Seconds

86,400 ( and I spend every second thinking of you!!)

Convert. 23 liters to gallons

9.01025

Convert. 15.4 L - 251 ml

14.149L 14149 ml

Convert. 5 gal 2 qt 1 pt

2 gal, 2 qt, 1 pt

Convert. -1* C to Fahrenheit

F= 30.2

I = prt. Find the rate if I= $350; P= $5,000; and t= 2years

R= 35%

Find the amount in the bank if. Principal= 2,500: rate= 4.5%; time= 7 years

A= 10,375

Add, give the sun using the appropriate precision.

23.46 m + 3.5 m + 0.267 m + 234.23 m + 453.41 m

714.9 m

Indicate the number of significant digits in the following numbers.

0.00305

3

Indicate the number of significant digits in the following numbers.

1,50,000

2

The blueprint for a part specifies a measurement 23.5 cm. An actual part has a measurement of 21.8 cm. Find the absolute error, relative error, and percent error

Absolute error= 1.7

Relative error= 0.07234

Percent error= 7.234