1) yessenia simplified an expression as shown below: given: x + 6 + 3(x + 4) step 1: x + 9(x + 4) step 2: x + 9x + 36 step 3: 10x + 36 in which step did yessenia make a mistake? what should she have done instead? your answer cannot exceed 75 words.

The mistake is done in step 1.

Correct answer is

Step-by-step explanation:

Given : Yessenia simplified an expression

Step 1 -

Step 2 -

Step 3 -

To find : In which step did Yessenia make a mistake? What should she have done instead?

Solution :

The mistake is done in step 1.

As she cannot add 6 and 3 because 3 is in multiple with (x+4).

The correct steps are,

Given :

Step 1 - Multiply 3 under bracket,

Step 2 - Add like terms,

Therefore, The required result is

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.

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.