Ask question

Ask question

All categories

2 years ago

5

Four bells at intervals of 12 minutes, 18 minutes, 20 and 25 minutes. If they toll together at 10 am, when next do they toll tog

ether again?

1 answer:

Pani-rosa [81]2 years ago

4 0

Answer:

1.00 am

Step-by-step explanation:

Find the LCM of 12,18,20 and 25

=900 min ....change it to hrs =15 hrs

10.00am___1000hrs

1000hrs+15hrs

=0100hrs

=1:00 am

You might be interested in

Simplify the algebraic expression. -2(x - 5) + 4(9 + x)

AnnZ [28]

Answer:

2x+46

Step-by-step explanation:

-2(x-5)+4(9+x), Multiply

-2x+10+36+4x, Combine like terms

Simplified= 2x+46

5 0

2 years ago

Solve the following quadratic equation:

Advocard [28]

Answer:

-3.5 or -6

Step-by-step explanation:

2x^2+19x+40=-2

2x^2+19x+40+2=0

2x^2+19x+42=0

2x^2+(12+7)x+42=0

2x^2+12x+7x+42=0

2x(x+6)+7(x+6)=0

(x+6)(2x+7)=0

either,

x+6=0

x=-6

or,

2x+7=0

2x=-7

x=-7/2

x=-3.5

4 0

2 years ago

In the complex number system, which of the following is equal to

pogonyaev

Answer:

C) $122+154i$

Step-by-step explanation:

$(14-2i)(7+12i)\\\\(14)(7)+(14)(12i)+(-2i)(7)+(-2i)(12i)\\\\98+168i-14i-24i^2\\\\98+154i-24(-1)\\\\98+154i+24\\\\122+154i$

Therefore, C is correct. Recall that $i^2=-1$

3 0

1 year ago

Read 2 more answers

You deposit $ 1200 in an account. The annual interest rate is 3%. How long will it take you to earn $108 in simple interest?

alukav5142 [94]

The correct answer is 3

5 0

2 years ago

Hatah and his 3 friends are each running an equal part of a la mile race.

Lana71 [14]

Answer:3.5 miles

Step-by-step explanation:

8 0

2 years ago