It helps to plot the points on a graph. It is easy to see that three of the sides are of length 6, and the remaining two are the hypotenuse of a 3-4-5 triangle, hence length 5.

3×6 +2×5 = 28

The perimeter of this polygon is 28 units.

6 0

2 years ago

Jivesh brought his Model B rocket on a camping trip near the top of a mountain. He wants to model how it descends down the mount

dybincka [34]

Answer:

i. 1.63 s

ii. The negative time cannot be used in this context

Step-by-step explanation:

i. Since h = −640t² and the rocket descends 1,690 m, h = -1,690 m (since there is a drop in height).

So, h = -640t²

t² = h/-640

t = √(- h/640)

Substituting h into the equation, we have

t = √(- h/640)

t = √[-(-1,690)/640]

t = √2.640625

t = 1.625

t ≈ 1.63 s

ii. So, the negative time cannot be used in this context because, the height drop is negative.

8 0

2 years ago

The equation-4 - x = -13 has the solution

liq [111]

Answer:

x = 9

Step-by-step explanation:

Step 1: Write equation

-4 - x = -13

Step 2: Solve for x

Add 4 to both sides: -x = -9

Divide both sides by -1: x = 9

Step 3: Check

Plug in x to verify if it's a solution.

-4 - 9 = -13

-13 = -13

8 0

2 years ago

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