Answer:
14400 blinks per day
Step-by-step explanation:
We need to convert minutes to days
60 minutes = 1 hour
24 hours = 1 day
The units will cancel leaving blinks per day.
150 blinks 60 minutes 24 hour 216000
---------------- * ---------------------- * ------------ = --------------- blinks/day
15 minutes 1 hour 1 day 15
14400 blinks per day
I will translate
"five more than" 5+ "twice a number" 2n
5+2n is the expression
The first question the answer to it is 30.
To do that divide 50/2 and see how many movies she can buy, which 25, then add the 5 free movies which gives you 30.
And the second part of the question I think is missing a picture or something.
Answer:
20 X 40 = 800 (split into 2 fourths) = 40
Step-by-step explanation
20 x 40 = 800;
For 2 necklaces she can split 800 into fourths.
800 - 40 = 80. (1 fourth)
80 - 40 = 40 (2 fourths)
40 - 40 = 0 (3 fourths)
She could split 800 into 2 fourths to get a number more than 0 and less then 42.
The best estimate of rounding 42 is 40. Because 40 is closer to 42.
4. B
5. B
6. D
Step-by-step explanation:
4. The radius is 3 units (3 boxes). So you do pi*r^2 = 3.14*9
5. You want the area of the box minus the area of the two circles.
Height of the box is 8 (bottom of circle to the top is two times the radius). Width of the box is 16 (left end of the left circle to the right end of the right circle) so 4 times the radius of the circles. Area of box is 128
Area of each circle is 3.14*(16). So you do 128 - 2*3.14*16.
6. Just plug in the radius 9 to the area of a circle formula: pi*radius^2 = 81*pi
