An automobile tyre manufacturer is comparing the tread life of its new tyres to the tread life of its previous model to see if they last significantly longer.
The values below are in thousands of kilometres.
• New Tyre: 130, 135, 125, 137, 128, 131, 140
• Old Tyre: 131, 132, 127, 129, 128, 134, 132
Perform a hypothesis test to determine if the new tyres lasted significantly longer than
the old tyres with a 0.05 level of significance.

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)