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4 years ago

Solve the equation x+9=11 X=

Mathematics

2 answers:

Vitek1552 [10]4 years ago

6 0

Answer:

Step-by-step explanation:

11-9=2

X=2

your welcome

Harman [31]4 years ago

5 0

Answer:

Step-by-step explanation:

11-9=2

X=2

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The highest point in colorado is mount elbert, at 14,433 feet.About how many miles is that

Juli2301 [7.4K]

2.7335227 because you know how ,any ft. are in 1 mile so you just multiply :)

8 0

3 years ago

Find the angles between -pi and pi that satisfy: (−√3) sin(v)+cos(v)=√3

MAXImum [283]

Observe that

$\sin\left(\dfrac\pi6-v\right)=\sin\dfrac\pi6\cos v-\cos\dfrac\pi6\sin v=\dfrac12\cos v-\dfrac{\sqrt3}2\sin v$

In the original equation, divide both sides by $\dfrac12$ :

$-\sqrt3\sin v+\cos v=\sqrt3\implies\dfrac12\cos v-\dfrac{\sqrt3}2\sin v=\dfrac{\sqrt3}2$

$\implies\sin\left(\dfrac\pi6-v\right)=\dfrac{\sqrt3}2$

Next,

$\sin x=\dfrac{\sqrt3}2\implies x=\dfrac\pi3+2n\pi,x=\dfrac{2\pi}3+2n\pi$

where $n$ is any integer. Then

$\sin\left(\dfrac\pi6-v\right)\implies v=-\dfrac\pi6-2n\pi,v=-\dfrac\pi2-2n\pi$

Fix $n=0$ to ensure $-\pi$ , so that

$v=-\dfrac\pi6,v=-\dfrac\pi2$

3 0

4 years ago

Which two-dimensional figure could be a cross section of a rectangular pyramid that has been intersected by a plane perpendicula

DanielleElmas [232]

The choices are found elsewhere and the figures would be:
a. rectangleb. trianglec. squared. trapezoid
From the choices, the answer would be option B. A triangle figure would be the cross section when a rectangular pyramid that has been intersected by a plane perpendicular to its base and throughits vertex.

7 0

4 years ago

Of the five quadratics listed below, four of them have two distinct roots. The fifth quadratic has a repeated root. Find the val

musickatia [10]

Answer: 3/5

Step-by-step explanation: The fourth quadratic in the list is the square of a binomial:

25x^2 - 30x + 9 = (5x - 3)^2

Therefore, the repeated root of this quadratic is the solution to 5x - 3=0, which is 3/5

6 0

3 years ago

I don’t understand how this question

Vladimir79 [104]

Answer:

x = √51

Step-by-step explanation:

The given figure is a right triangle.

Using the Pythagorean Theorem to find x

(Altitude 1)² + (Altitude 2)² = (Hypotenuse)²
(7)² + x² = (10)²
49 + x² = 100
x² = 51
x = √51

4 0

2 years ago