HELP ASAP Sylvia is training for a triathion. She cycles
6.25 km in 25 min.
a) What is her average speed, in kilometres
per hour?
b) Solve a proportion to determine how
long she would take to cycle 40 km.
Use the speed in part (a).

(Different Question Here)
In a 750 g bag of mixed nuts, the ratio of
peanuts to cashews to almonds is 8:4:3 by
mass. Determine the masses of the peanuts,
cashews, and almonds in the bag.

i am sure it will be 90 degrees.

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.