2 years ago

Answerr po plss plsss

Mathematics

2 answers:

emmasim [6.3K]2 years ago

7 0

Answer:

8. (m) (1) = m

9. commutative property

10. the ans is -x

13. -9 × 3 = 3 × -9

12. 8xy

14 . 12 × 1 = 12

15. 17+ (-17 ) = -0

Step-by-step explanation:

hope it helps u :)

romanna [79]2 years ago

5 0

Step-by-step explanation:

please mark me as brainlest

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3 years ago

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77julia77 [94]

Solution:

Note that:

Given inequality: 3 < x + 3 < 6

Solving the inequality one by one.

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3 years ago

A projectile is fired into the air with an initial vertical velocity of 160 ft/sec from ground level. How many seconds later doe

djverab [1.8K]

The maximum height of the projectile is the maximum point that can be gotten from the projectile equation

The projectile reaches the maximum height after 5 seconds

The function is given as:

$\mathbf{h(t) = -16t^2 + 160t}$

Differentiate the function with respect to t

$\mathbf{h'(t) = -32t + 160}$

Set to 0

$\mathbf{h'(t) = -32t + 160 = 0}$

So, we have:

$\mathbf{-32t + 160 = 0}$

Collect like terms

$\mathbf{-32t =- 160 + 0}$

$\mathbf{-32t =- 160}$

Solve for t

$\mathbf{t = \frac{- 160}{-32}}$

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Hence, the projectile reaches the maximum after 5 seconds