Match the statement type with the given statement: 4x+9=21 because x=3.

If 4x+9=21, then x=3.
If x=3, then 4x+9=21.
If 4x+9≠21, then x≠3.
If x≠3, then 4x+9≠21.
4x+9=21 if and only if x=3.

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.

2 2/3 hours duhh silly

step-by-step explanation:

answer: correct

step-by-step explanation:

question: use the following table of a school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km

answer: 42 km/h

explanation: 1.4/0.033 42.42424 = 42 km/h

question answered by

(jacemorris04)