A rectangle has a height of 3 and a width of 2x^2+3x-5 express the area of the rectangle

6x²+ 9x- 15

Step-by-step explanation:

To find the area of a rectangle multiply length and width.

3(2x²+ 3x-5)

Use the distributive property to solve.

3(2x²)= 6x²

3(3x)= 9x

3(-5)= -15

The area would be

6x²+ 9x- 15

heyyy

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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