4 years ago

Pls help i feel like im doing it right but i wanna make sure

Mathematics

1 answer:

Svetllana [295]4 years ago

3 0

Answer:

-43

Step-by-step explanation:

1. -3 x -3 x -3 = -27

2. -27- 4 x 4

3. -27- 16 = -43

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In isosceles triangle the length of the base is twice shorter than the length of a leg. The perimeter of this triangle is 50 cm.

andrew11 [14]

The length of the base is 10 and the length of each leg is 20.

In order to find this, we can start by making the length of the base x. Now we know that the legs are twice as long, which would make them 2x. Since there are two of them, we can add x + 2x + 2x and set equal to 50 to find the value of x.

x + 2x + 2x = 50

5x = 50

x = 10

Now we can plug this in for our leg length as well to find that.

2x = Leg

2(10) = Leg

20 = leg

4 0

3 years ago

Read 2 more answers

Please help and show work and steps

ki77a [65]

Answer:

I and III

Step-by-step explanation:

On a unit circle, the only two angles whose sine is $-\dfrac{\sqrt{3}}{2}$ are $\dfrac{4\pi}{3}$ and $\dfrac{5\pi}{3}$ , otherwise known as $-\dfrac{\pi}{3}$ . Therefore, the correct answers are I and III. You can see the unit circle below, where the y coordinates of the above angles show $-\dfrac{\sqrt{3}}{2}$ .