Square slabs of side 40 cm are to paved in a rectangular courtyard of length 24m and breadth 16 m. find the number of slabs required?

24 slabs are required to pave in a rectangular courtyard

Step-by-step explanation:

Area of courtyard (rectangle):

A = lw

A = lb

Where,

l is length

b is breadth

A = 24 × 16

A = 384 m²

Area of each slab (square):

A = s²

A = (40)²

A = 1,600 cm²

A = 16 m²

NOTICE: Make sure to equalize the unit of measurement. 1 m = 100 cm

Now,

384 ÷ 16 = 24 slabs

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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