2 years ago

Triangle and polygon practice, help please!! Even just with one of them!

Mathematics

1 answer:

deff fn [24]2 years ago

8 0

Step-by-step explanation:

For question no. 3

Since we are aware that measure of the sum of all the three interior angles of a triangle is 180°.

$135 \degree + 25\degree +( 2x + 2)\degree = 180 \degree \\ \\ \therefore \: 2x\degree = 180 \degree - 152 \degree \\ \\ \therefore \: 2x\degree = 28 \degree \\ \\ \therefore \: x\degree = \frac{28 \degree}{2} \\ \\ \therefore \: x = 14$

You might be interested in

One side of a triangle is 3 times the second side. The third side is 17 feet longer than the second side. The perimeter of a

Nadya [2.5K]

Answer:

Step-by-step explanation:

lets have one side =a

P=3a+a+(17+a)=52

P=5a+17=52

5a=52-17

5a=35

a=7

second side=21

third side=24

3 0

3 years ago

your friend says that the volume of a sphere with a radius r is four times the volume of a cone with radius r. when is this true

Ierofanga [76]

Volume of a sphere is given by the formula: $V_{\circ}=\frac43\pi r^3$

If we pull the 4 out front we have, $V_{\circ}=4\left(\frac13\pi r^3\right)$ .

Volume of a cone is given by the formula: $V_{\triangle}=\frac{1}{3}\pi r^2\cdot h$

Notice that if the height of the cone is equal to the radius, $V_{\triangle}=\frac13\pi r^2\cdot r$

then it's exactly what we see in our volume formula without the 4!

7 0

2 years ago

Is 5x + 12 = 5x + 22 a infinite real solution

Alexus [3.1K]

Answer:

No Solution

Step-by-step explanation:

There is no number that can replace x to make the equation true.

5 0

2 years ago

Read 2 more answers

What Does it Mean to Have a 150% Salary Raise