Answer:
At 5:15 PM , they will ring together.
Step-by-step explanation:
We have been given that first bell rings every 15 minutes and second bell rings at every 25 minutes.
In order to find when both will ring together again, we can find the LCM of these two numbers.
15 = 3 × 5
25 = 5 × 5
Therefore, LCM of these two numbers is
LCM = 5 × 5× 3
LCM = 75
Hence, 75 minutes = 75/60 = 5/4 hours
Therefore, at 5:15 PM , they will ring together.
Answer:
46,47,48,49,50,51,52,53,54
Step-by-step explanation:
Answer:
Don't worry! This is not that hard! You got this! You can use this for checking :)
Plus we have to use x-y and use the numbers given for each question
15. x-y if x=6 and x=-3
6-(-3) negative plus negative equals positive
6+3= 9
16. x= -7 x=1
-7-1= -8
17. x=-2 y=-6
-2-(-6) negative plus negative equals positive
-2+6= 4
18. x=9 y=11
9-11= -2
19. x=-1 y=-1
-1-(-1)
-1+2= 1
20. x=-5 y=5
-5-5= -10
21. The high temp. is 6 and the low temp. is -3 It sasking for the differnece between the two.
6-(-3)
6+3=9
The difference between the high temp. and low temp. is 9 degrees Fahrenheit
22. This question is a little tricky but don't worry!
From -7 to 7. To reach -7 to 0, that is 7 degrees. To reach 7 from 0, that is also 7 degrees. So you add 7 and 7!
7+7= 14
The temperature increased 14 degrees Fahrenheit.
Hope this helps! Good luck on your quiz and I hope you pass :)
Answer:
h = 2
Step-by-step explanation:
7h = -(2h-18)
7h = -2h + 18
9h = 18
h = 18/9
h = 2
1)
2400kg-15% water=
2400-360=2040kg other ingredients
1+2+5=8
->
1/8=cement, 2/8 sand, 5/8 stone
2040*(1/8)=2040/8=255kg cement
2040*(2/8)=2040/4=510kg sand
2040*(5/8)=(2040/8)*5=255*5=1275kg stone
2)
A=2/15 + 1/3 =2/15 + 5/15=7/15
B=6/7 - 1/3=18/21 - 7/21=11/21
15=3*5
21=3*7
-> least common multiple of 15&21=3*5*7=105
A=7/15=(7*7)/105=49/105
B=11/21=(11*5)/105=55/105
now we can compare them, but we still don't know how they relate to 1/2
-> least common multiple of 105&2=210
A=49/105=98/210
B=55/105=110/210
1/2=105/210
now you can see the difference between 1/2 and A is 7/210 and between 1/2 and B is 5/210, so B is closer to 1/2 than A
3)
a)insert n=2 and calculate the value:
3*(2)^2-1=
3*4-1=
12-1=11
b)insert n=5 and calculate the value:
3*(5)^2-1=
3*25-1=
75-1=74