Help!!!!!!!!Urgently.

hey, can anyone help me with these quick questions? if u can u are a life saver...

q1. 'M' is an odd number. Is the number m+1 divided by 2 odd or even, or not possible to tell?

q2. solve this equation:
7+5k=8k+1

solve this equation. show your working.

10y+23=4y+26

i do know how to do it, but it's just that i have forgotten how to do it, and my teacher was away so we had a substitute.And she gave us this test to do at home for revision.

plzzzzzzzzzzzz help.

Reply 1

yazan_l

q1. 'M' is an odd number. Is the number m+1 divided by 2 odd or even, or not possible to tell?

take M = 3
M+1 = 4
4 is divisable by 2 only
take M=5
M+1 = 6
6 is divisable by both 2 and 3

Reply 2

yusufu

1) not possible to tell.
2) k=2
3)
10y+23=4y+26
6y = 3
y = 0.5

Reply 3

Answers plz!

wowwwwwwww thanks u guys. here's the last question i really appreciate it.

q1. ali, barry and cindy each have a bag of counters. They do not know how much counters are in each bag. they know that..
Barry has two more counters than ali.
Cindy has four times as many counters as ali.
a. Ali calls the number of counters in her bag a. write the expressions to show the number of counters in barry's bag and in cindy's bag.

Reply 4

Chewwy

barry has two more than a
cindy has four times a

Reply 5

Answers plz!

so would the expression for barry be 2+a or 2a? and would cindy be 4a or 4*a?

help me please

2+a for barry
4a is the same as 4*a but 4a notation is generally preferred .

Reply 8

Answers plz!

thank you. can you help me with one last problem?..

q1. The manufactures of a guessing game claim that the probability of winning each game is 0.65. Karen plays this game 200 times and wins 124 times. she says: 'The manufacturers must be wrong'
do you agree with her? yes or no. explain your answer.

plzzzzzzzzzzzzz this is the only probability question i am stuck on, i have completed all the others but this one is sooooo hard. plzzzzzz answer with an explanation. thanks you.