Answer:
It is an unusual result contradicting the national survey.
Step-by-step explanation:
National survey showed 44% of college students who drink.
The professor's survey showed that 96/244 = 39% drink.
The professor's survey deviated from the national survey is 5% (44% - 39%) representing about 0.25% (5% squared) variance.
Standard deviation is the spread of a set of numbers from their mean. In other words, it measures how far an observed value is from the mean. It can be calculated by getting the square root of the variance.
Answer:
Step-by-step explanation:
First let's re-write the equation:
f(x) = 3x² - 5x + 4
If f(-2). then we can re-write the equation as:
f(-2) = 3(-2)² - 5(-2) + 4
We must solve for exponent first: (-2)² = 4
f(-2) = 3(4) - 5(-2) + 4
Then solve for multiplication:
f(-2) = 12 + 10 + 4
Finally addition:
f(-2) = 26
that means that in a function, if X = -2, then F is equal to 26
Divide the two numbers. The equation is 420/15=28. So Lee would get 28 miles per gallon of gasoline. I hope this helps!
Answer: the bracelet should cost at least $29
Step-by-step explanation:
Answer:
$18.12
Step-by-step explanation:
A pound of raisins=$2
A pound of Almonds=$5.06
x= no. Of pounds of raisins
y=no. Of pounds of almonds
If six pounds of a trail mix contains 2 more pounds of raisins than almonds
Then,
x+y=6
x= 4 pounds
y= 2 pounds
Cost of 6 trail mix=4($2)+2($5.06)
=$8+$10.12
=$18.12
