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3 years ago

7

Solve for X. What does X equal?

2 answers:

lisabon 2012 [21]3 years ago

6 0

If you’re solving the equation for X then X = -5

emmainna [20.7K]3 years ago

3 0

Step-by-step explanation:

Apply <u>angle sum of triangle</u>, that means the sum of all interior angles in a triangle is equal to 180°.

So that, (x + 45) + 50° + 90° = 180°.

However when we simply do 45+50+90, the answer is already bigger than 180.

So the question is made wrong.

You might be interested in

60 is 15% of what number?

Norma-Jean [14]

Method 1

$\begin{array}{ccc}60&-&15\%\\x&-&100\%\end{array}\ \ \ \ |cross\ multiply\\\\15x=60\cdot100\\15x=6000\ \ \ \ \ |divide\ both\ sides\ by\ 15\\\boxed{x=400}$

Method 2

$\begin{array}{cccc}15\%&-&60&|divide\ both\ sides\ by\ 3\\\\5\%&-&20&|multiply\ both\ sides\ by\ 20\\\\100\%&-&400\end{array}$

Method 3

$p\%=\dfrac{p}{100}\\\\15\%=\dfrac{15}{100}=0.15\\\\0.15x=60\ \ \ \ |divide\ both\ sides\ by\ 0.15\\x=400$

7 0

3 years ago

Use the quadratic formula to solve the equation. -2x^2 -x+7=0

Radda [10]

Answer: $x_1=1.63\\x_2=-2.13$

Step-by-step explanation:

1. The quadratic formula is shown below:

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

2. Given the quadratic equation given in the problem, you have that:

$a=-2\\b=-1\\c=7$

3. Therefore, when you substitute the values shown above, you obtain the following result:

$x=\frac{-(-1)+/-\sqrt{(-1)^{2}-4(-2)(7)}}{2(-2)}$

$x_1=1.63\\x_2=-2.13$

4 0

3 years ago

Read 2 more answers

I don't understand this question please help

Furkat [3]

Answer:

LM = 22

Step-by-step explanation:

11(44) = (LM)^2

484 = (LM)^2

LM = √484 = 22

8 0

2 years ago

Read 2 more answers

Hey! Please answer this fast, it’s due soon. It’s fractions

patriot [66]

Answer:

3/12 - 8/12= 5/12

10/12 - 5/12= 5/12

3 0

3 years ago

lana66690 [7]

Answer:

The potential energy of the ball having 2kg mass would be $392$ J

Step-by-step explanation:

I am assuming the ball has a mass of 2 kg, as you have not mentioned the mass of a ball.

Considering the formula for calculating the gravitational potential energy

$G.P.E\:=\:m.g.h$

As

$m = 2$ kg

Acceleration of gravity = g = 9.8 $ms^{-2}$

As the ball is on the height = h = 20 meters

So,

$G.P.E\:=\:(2)(9.8)(20)$

$G.P.E\:=392$ J

Therefore, the potential energy of the ball = $392$ J

Keywords: potential energy, Gravitation potential energy

Learn more potential energy from brainly.com/question/14022793

#learnwithBrainly

5 0

3 years ago