The left and right page numbers of an open book are two consecutive integers whose sum is 355. Find these page numbers.

177 and 178

Step-by-step explanation:

Let's let the first page number be n. Then the next page number must be (n+1).

And together, we know that they total 355. So:

Combine like terms:

Subtract 1 from both sides:

Divide both sides by 2:

So, the first page number n is 177. And the other is 178.

And we're done!

177 and 178

Step-by-step explanation:

If they are consecutive numbers and add to 355, it means that 2 times their average will also add the 355. So to find their average, we can divide 355 by 2 which gives us 177.5

If we know that this is the number exactly between them and they are consecutive, then we just find the nearest whole number either side: 177 and 178, which gives us our page numbers.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.