All categories

3 years ago

I literally have no clue what this unit is about so help

Mathematics

2 answers:

vaieri [72.5K]3 years ago

5 0

The answer is D
if the legs are 5 and 4 cm the equation to find the hypotenuse would be 5^2+4^2=c^c
5 squared is 25 and 4 squared is 16 that gives you 41, normally you would square root the 41 but it gives you a decimal number

kaheart [24]3 years ago

3 0

Answer:

4) √41 cm
5) 8 cm or √514 cm

Step-by-step explanation:

<u>According to Pythagorean:</u>

c² = a² + b²
c² = 4² + 5² = 16 + 25 = 41
c = √41

Two sides are 15 cm and 17 cm

<u>If the third side is hypotenuse, its length is:</u>

c = √(15² + 17²) = √514 cm

<u>If the third side is leg, its length is:</u>

a = √(17² - 15²) = √64 = 8 cm

You might be interested in

Can anyone teach me plz<br>This question about math<br>Plz open to see clearly

emmainna [20.7K]

Assuming you know the quadratic formula:

$x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}$

You can fill in a, b and c in this and get:

$x = \frac{4 \pm \sqrt{16-8p}}{4}$

Now, let's create a shorthand $q = \frac{\sqrt{16-8p}}{4}$ to make the writing easier:

$x = 1 \pm q$

But since one root is three times the other root (but we don't know which one), we also know that:

$1 + q = 3(1-q)$ or $1 - q = 3(1+q)$

If you solve this, you get:

$q = \frac{1}{2}$ or $q = -\frac{1}{2}$

However, since q is a square root, it must be postive.

So we know that:

$\frac{\sqrt{16-8p}}{4} = \frac{1}{2}$

From this you find that

$16-8p = 4$

So p = 3/2

The roots are x=1/2 and x=3/2.

5 0

3 years ago

Consider a circle with a diameter of 5 centimeters. Which equation shows how the relationship between the circumference and the

mrs_skeptik [129]

Answer:

The equation which shows how the relationship between the circumference and the diameter of this circle is equivalent to π is π = $\frac{C}{5}$ ⇒ answer C