Test 12, Units 1 - 15 Flashcards Preview

7th math > Test 12, Units 1 - 15 > Flashcards

Flashcards in Test 12, Units 1 - 15 Deck (56)
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1


T or F:  The hypotenuse is the longest side in a right triangle.


true

2


T or F:  The absolute value of -8 is 8


true

3


An isosceles triangle has ____ congruent sides.


isosceles has 2 congruent sides

4


The cosine is the ratio between the length of the _______ leg to the length of the hypotenuse.

adjacent

5


The boiling point of water is _____ degrees C.


100

6


The expression 28xyz has how many terms?


one, it is monomial

7


T or F:  Shapes that have the same size & shape are said to be similar


False

8


T or F:  The points where the sides of a polygon meet are called the vertexes.


true

9


T or F:  A heptagon is a seven-sided polygon


true

10


T or F:  An acute angle has more than 90 degrees but less than 180 degrees.


False.  Obtuse.

11


Write the formula for finding the area of a triangle


A = 1/2bh

12


Write the simple interest formula


i = prt

13


Write the formula for finding the circumference of a circle using the diameter


C = pid

14


Write the formula for finding the volume of a cylinder.


V = pir2h

15


Write the formula for finding the perimeter of a square


P = 4s

16


Convert 120 miles to the nearest whole kilometer.  Remember that 1 mi. = 1.61 km


120 x 1.61 =

193 km

17


Convert 45 degrees C to the Fahrenheit scale.

9/5C + 32 = F

9/5 x 45 + 32 = F

81 + 32 = F

113 = F

113 degrees F.

18


Find the approximate number of miles 23 North latitude is from the equator.  Remember that the distance between 1 degree of latitude is approximately 69 miles.


23 x 69 =

1587 mi.

19


Write the time in the Central Zone if the time in the Pacific Zone is 11:35 P.M.


Difference is +2 hours, so:

1:35 A.M.

20


Write the number of centimeters in 3.5 meters.


100 centimeters in a meter so:

3.5 x 100 =

350 cm

21


Write the number of inches needed to represent 25 miles on a map if 1/2 inch represents 50 miles.


25/50 = .5 or 1/2, so 1/2 inch x 1/2 =

1/4 in.

 

 

22


Write the number of ounces in 3 1/2 pounds.


16 oz. in a lb., so 3 1/2 x 16 =

56 oz.

23


Round off 0.579 to the nearest hundredth.


0.58

24


Write the number of degrees in a right angle.


90

25


Write the value of x in

5/8 = x/16


x = 10

26


Write the length of the radius if the diameter is 6 cm.


3 cm

27


Write the sum of -6 and -8.


-14

28


change 34/5 to a mixed number


6 4/5

29


Express 1/4% as a decimal.


.0025

30


4732

-1586

_______

 


3146