All categories

3 years ago

Which equation can be used to find the measure of angle BAC?

Mathematics

2 answers:

asambeis [7]3 years ago

8 0

Answer:

Step-by-step explanation:

let angle $B$ . be $y$ then,

using angle sum property,

x+y+90=180 (angle c is 90 because its given)

hence you have the equation

Monica [59]3 years ago

6 0

Answer:

Cos() = AC / AB

So in this case: Cos() = 5 / 13

You might be interested in

Which algebraic expression models the sum of 3 coins and c coins?

SpyIntel [72]

3+c i think that the answer.

7 0

3 years ago

a toy rocket is launched from the top of a 48 foot hill. The rockets initial upward velocity is 32 feet per second and its heigh

sdas [7]

Answer:

t = 2.11 seconds

Step-by-step explanation:

A toy rocket is launched from the top of a 48 foot hill. The rockets initial upward velocity is 32 feet per second and its height h at any given second t is modeled by the equation:

$h=-16t^2+32t+48$

Let us assume that we need to find the time by it to reach the ground. It means h = 0

$-16t^2+32t+48=0$

The above is a quadratic equation. The value of t is given by :

$t=\dfrac{-b\pm \sqrt{b^2-2ac} }{2a}\\\\t=\dfrac{-b+ \sqrt{b^2-2ac} }{2a},\dfrac{-b- \sqrt{b^2-2ac} }{2a}\\\\t=\dfrac{-32+ \sqrt{(32)^2-2\times (-16)(8)} }{2\times (-16)},\dfrac{-32-\sqrt{(32)^{2}-2\times(-16)(8)}}{2\times(-16)}\\\\t=-0.11\ s, 2.11\ s$

So, it will take 2.11 seconds to reach the ground.

6 0

3 years ago

Which simplified expression represents the area of the parallelogram

Lerok [7]

Just multiply the sum of the numbers then divide

4 0

3 years ago

Find parametric equations through point P=(2,2,7) in the direction of the vector v = (44, 14, -20)?

ycow [4]

9514 1404 393

Answer:

(x, y, z) = (2+44t, 2+14t, 7-20t)

Step-by-step explanation:

One way to write parametric equations for line L is ...

L = P + t·<em>v</em>

where P is the given point and <em>v</em> is the given direction vector. Using that form, we have ...

(x, y, z) = (2+44t, 2+14t, 7-20t)

If you like, you can remove a common factor of 2 from the coefficients of t.

(x, y, z) = (2+22t, 2+7t, 7-10t)

5 0

2 years ago

Which of the following numbers are irrational? Check screenshot.

Law Incorporation [45]

Answer:

Step-by-step explanation:

i think it's d because it's negative

7 0

3 years ago

Read 2 more answers