What is the probability that a data value in a normal distribution is between a

ASHA 777 [7]

Question 1 Simplify the following expression: (5x2 + 3x + 4) − (2x2 − 6x + 3). If the final answer is written in the form Ax2 + Bx + C, what is the value of B?

Solution:

5x^2 + 3x + 4 - 2x^2 + 6x - 3 = 3x^2 + 9x + 1

Then, B = 9

Question 2
Simplify: (3x2 − 2) + (2x2 − 6x + 3)

5x2 − 6x + 1

5x2 − 6x − 1

x2− 6x + 1

5x2 − 8x + 3

Solution:

3x^2 - 2 + 2x^2 - 6x + 3 = 5x^2 - 6x + 1

Question 3
A sports company conducted a road test of a new model of a geared bike. The test rider cycled (3x - 2) miles on a flat road, (x2 - 5) miles uphill, and (2x + 7) miles downhill. Which simplified expression is equivalent to the total distance, in miles, for which the bike was tested?

x2 - x

x2 + 5x

x2 − x + 14

x2 + 5x + 14

(3x - 2) + (x2 - 5) + (2x + 7) = 3x - 2 + x^2 - 5 +2x + 7 = x^2 + 5x

Question 4
Simplify: (4x − 6) − (5x + 1)

x + 7

−x + 7

x − 7

−x − 7

(4x − 6) − (5x + 1) = 4x - 6 - 5x - 1 = -x -7

Question 5
Simplify the following expression: (x + 6y) - (3x − 10y). If the final answer is written in the form Ax + By, what is the value of A?

(x + 6y) - (3x − 10y) = x + 6y - 3x + 10y = -2x + 16y

A = -2

Question 6
Simplify: (3x − 5) + (3x + 6)

6x − 1

1

6x − 11

(3x − 5) + (3x + 6) = 3x - 5 + 3x + 6 = 6x + 1

6 0

4 years ago

A circle is centered at (−3, 2) and has a radius of 2. Which of the following is the equation for this circle? (x + 3)2 + (y − 2

Luba_88 [7]

Answer:

the equation for this circle is

(x + 3)² + (y - 2)² = 4

8 0

3 years ago

The flash of lightning travels at the speed of light, which is about 186,000 miles per second. The sound of lightning (thunder)

4vir4ik [10]

Answer:

A. Distance of the lightning after 4 seconds = 744,000 miles

B. Distance of the lightning after n seconds = 186,000 * n

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Speed of lightning = 186,000 miles per second

Speed of sound = 750 miles per hour

2. A. If you see a flash of lightning, then hear the thunder 4 seconds later, how far away is the lightning?

Distance of the lightning after 4 seconds = 186,000 * 4

Distance of the lightning after 4 seconds = 744,000 miles

B. Now let’s generalize that result. Suppose it takes n seconds to hear the thunder after a flash of lightning. How far away is the lightning, in terms of n?

Distance of the lightning after n seconds = 186,000 * n

4 0

3 years ago

Which of the following terms correctly describe the figure given below

azamat

Answer: A,C, and F

Step-by-step explanation:

6 0

3 years ago

ABC Bookstore rents a storage space that is 75 ft x 50 ft and

leva [86]

Answer:

The answer is B. 9375

Step-by-step explanation:

If you multiply 75*50 you get 3,750. Then if you multiply 9,385*2.50, you get 9,375.

8 0

3 years ago