The sum of two numbers is 45. Their difference is 11. What is the smaller number?
help plzzz
ok so
let the numbers be a and b so a + b = 45 and a - b = 11
what do we get when we add the numbers?
56?
yes good
is that the answer
no
whats the answer for a - b = 11?
Traveling with the current, a certain boat went 15 km/h. Against the same current, it only went 1 km/h. Find the speed of the boat in still water and the speed of the current. The speed of the boat is? The speed of the current is?
what about this one
lets stick with the first problem
im not allowed to give u the answers i have to guide u through them
whats a - b = 11?
but i jus
what?
wait let me show u some of the equations
idk whatsa-b=11
Let the numbers be a and b Given that a+b=45 ....(1) a−b=11 ....(2) Adding these two equations, we get 2a=56 ⇒a=28
now you have to substitute
28+b=45
ty @jhonyy9
so we gotta do 28+b=45
yes
b=45-28 right?
yes
since we substituted
and b also equals 17
right
so im going to show you all the steps now
ok
Let the numbers be a and b Given that a+b=45 ....(1) a−b=11 ....(2) Adding these two equations, we get 2a=56 ⇒a=28 Substituting value of a in equation (1), we get 28+b=45 ⇒b=45−28 ⇒b=17 We get a=28 and b=17
is that for the firstproblem i showed you??
do u understand now?
yes
and the answer woud be17
now u want me to solve the second problem?
plz
ok so
let v = the rate of the boat in still water c = the rate of the current d = the distance traveled in one direction
the canoe's speed downstream: v + c = 11 km/h the canoe's speed upstream: v - c = 3 km/h
right?
yes
wait wait wait im sorry i have the wrong problem
ohh
ok now im stuck lol
@jhonyy9 can you help him with his second problem?
jhonny will be with you in a minute
waiti have a question for number one
ok shoot
what is the smaller number for number 1
The sum of two numbers is 45. Their difference is 11. What is the smaller number?
what about this problem When I looked outside, I saw birds and cats. I counted 19 heads and 42 legs. ( I counted because I thought: This would be a good math problem!) How many birds and how many cats did I see in the yard
@Vocaloid r u good at math??
\(\color{#0cbb34}{\text{Originally Posted by}}\) @Reece and the answer woud be17 \(\color{#0cbb34}{\text{End of Quote}}\) @Angle
????
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