7. 2.
At the Science Olympiad, the number of boys to girls was 2:7. If there
vare 250 more girls than boys, how many boys were at the event?
59 2-125
250 27
250-14
7
Students surveyed boys and girls separate to determine which subject
Tun/250
8.
ting the qumun it weg datanminad

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

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

where is the figure