Answer:

**Answer: **(960.80,1039.20)

**Step-by-step explanation:**

Let X denotes a random variable that represents the life of the light bulbs produced at the factory.

As per given,

Critical z-value for 95% confidence interval : z* = 1.96

Confidence interval for population mean:

**So, a 95% confidence interval estimate (CIE) of the true mean life (m) of light bulbs produced in this factory = (960.80,1039.20)**

Which situation is best represented by the following equation? 45w + 123.95 = 753.95 A. Erica paid $753.95 for dance classes. She paid a $123.95 registration fee and $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes? B. Erica paid $753.95 for dance classes. She paid a $45 registration fee and $123.95 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes? C. Erica and her sister paid $753.95 for dance classes. Erica paid $123.95 for each week she was enrolled in the classes, and her sister paid $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica and her sister were enrolled in dance classes? D. Erica paid $753.95 for dance classes. She paid $123.95 for each week she was enrolled in the classes after using a coupon that gave her $45 off the price per week. What is w, the number of weeks Erica was enrolled in dance classes?

Which polygons have at least one pair of parallel sides but are not parallelograms? Choose all that apply.

Idk how to solve this find value of x and y

Simplify 2c+6d+4c-8c

Convert x2 + y2 = 16 to polar form.r = 16r = 4θ = 16θ = 4

Which polygons have at least one pair of parallel sides but are not parallelograms? Choose all that apply.

Idk how to solve this find value of x and y

Simplify 2c+6d+4c-8c

Convert x2 + y2 = 16 to polar form.r = 16r = 4θ = 16θ = 4

6 is the answer to the question

**Answer:**

increases

**Step-by-step explanation:**

Since the lines goes up as the variable F increases( F is the horizontal variable), C will increase

**Answer:**

The line increases because u can obviously see the line going up...

**Step-by-step explanation:**

**Answer:**

**Step-by-step explanation:**

Given the equation

Find the derivative:

Substitute

then

**Answer:**

7.75

**Step-by-step explanation:**

6-4=2

2 times the square root of 3=3.46410161514

square root of 5 times 3.46410161514=7.74596669242

to 2dp=7.75

Write a differential equation that expresses the rate of change in the radiation level in terms of the radiation level.

**Answer:**

The differential equation is

**Step-by-step explanation:**

**Differential equation for the rate of change in radiation level:**

Radiation level is R.

Rate of change indicates that the radiation level R varies in function of time t, which mathematically means that we have:

**After the reactor is shut down, the radiation from the nitrogen-17 decreases in such a way that the rate of change in the radiation level is directly proportional to the radiation level.**

Rate of change is k. Decreases means that k is negative. Proportional to the radiation level of R means that -k multiplies R. So the differential equation is:

Enter your answer in the box.

**Answer:**

9 (5) 2 - 2 - 5 = 83