3) People with acrophobia (fear of heights) sometimes enroll in therapy sessions to help them overcome this fear. Typically, seven or eight therapy sessions are needed before improvement is
noticed. A study was conducted to determine whether the drug D-cycloserine, used in combination
with fewer therapy sessions, would help people with acrophobia overcome this fear. Each of 27
people who participated in the study received a pill before each of two therapy sessions. Seventeen
of the 27 people were randomly assigned to receive a D-cycloserine pill, and the remaining 10
people received a placebo. Three months after the administration of the pills and the two therapy
sessions 61% of those receiving D-cycloserine pill improved their acrophobia, while 33% of those
in the placebo group improved their acrophobia.
Vanables ("What-
Population -
Sample -
Statistics) -
Parameter(s) -

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

step-by-step explanation:

coldest temperature they recorded add me europa2433

europa2433

the answer is b

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.