Answer:
18.8 minuites
Step-by-step explanation:
20% of 5 is 1 so the second time is 6 and 30% of 6 is 1.8 so it will be
5+6+7.8=18.8
Answer:
216
Step-by-step explanation:
Lots of means multiplication so:
18 × 12 = 216
HOPE THIS HELPED
Answer:
<h2>462</h2>
Step-by-step explanation:
15% of 840 is 126
30% of 840 is 252
252
<u>+ 126 </u>
<em> 378</em>
<em></em>
840 - 378 = <em>462</em>
or
--------------------------------------------------------------------------------------------------------------
55% of 840 is...
<em>462</em>
--------------------------------------------------------------------------------------------------------------
<em>Hope this helps! <3</em>
Thhe easiest way would be to solve for y first
4x=3y-7
add 7
4x+7=3y
divide both sides by 3
(4x+7)/3=y
try each
x=4
(4(4)+7)/3=y
(16+7)/3=y
(23)/3=y
7 and 2/3=y
(4,7.66666)
x=5
(4(5)+7)/3=y
(20+7)/3=y
(27)/3=y
9=y
(5,9)
x=6
(4(6)+7)/3=y
(24+7)/3=y
(31)/3=y
10 and 1/3=y
(6,10.333)
(4,7.66666)
(5,9)
(6,10.333)
when x=4, y=7 and 2/3
when x=5, y=9
when x=6, y=10 and 1/3
So, the rate per 7 minutes is 7:196
To find the unit rate (how many spins per minute) we need to divide the 196 by 7.
196/7 = 28
The unit rate is 1:28
At this rate, the unicycle makes 420 revolutions per 15 minutes. We find this by 28 * 15 = 420.