All categories

3 years ago

I’m not sure what they mean by right triangle? Can u help?

Mathematics

2 answers:

jolli1 [7]3 years ago

6 0

A triangle with a 90 degree angle

hodyreva [135]3 years ago

3 0

Answer:

A right triangle with a 90 degree angle. Also, for the question, use the Pythagoras theorem. a^2 + b^2 = c^2. Use the two smaller sides for a^2 + b^2 and the larger number for c^2. If they are equal on both sides, then it is a right triangle. For example on the first problem, 10^2 + 15^2 does not equal 20^2. Therefore, the answer would be no.

You might be interested in

Solve the following absolute value equation.

dolphi86 [110]

Hey there!

$|\displaystyle\frac{x-1}{2} |=7$

Let's say that x-1 is negative:

$\displaystyle\frac{-x+1}{2} =7$

The first step is to multiply both sides by 2:

$\text{-x+1=14}$

Now, move 1 to the right, using the opposite operation:

$\text{-x=14-1}$

$\text{-x=13}$

Divide both sides by -1:

$\text{x=-13}$

Note: Since the negative sign is already entered, all you need to enter is 13.

I hope you find my answer helpful.

Good luck!

Have a great day!

$\bf{StargazingWithJoy}$

5 0

3 years ago

Write an equation for a parabola that has a vertex (1, 2) and passes through the point (3, -6).

Alex

Answer:

y= -2x²+4x.

Step-by-step explanation:

the common equation of the parabola is y=ax²+bx+c, where a, b, c - numbers.

1) the coordinates of the vertex are:

$x_0=-\frac{b}{2a} \ and \ y_0=\frac{4ac-b^2}{4a}.$

2) if according to the condition x₀=1, then b= -2a.

If according to the condition y₀=2, then $2=\frac{4ac-b^2}{4a}=\frac{4ac-4a^2}{4a}=c-a;$

it means that c=a+2.

3) if b= -2a; c=a+2 and the point (3;-6) belongs to the given parabola, then it is possible to substitute them into the common equation of the parabola:

-6=3²*a-6a+a+2; ⇔ a= -2.

4) if a= -2, then b=-2a=4, and c=a+2=0.

5) if a=-2, b=4 and c=0, then the required equation of the parabola is:

y= -2x²+4x.

6 0

3 years ago

Select the correct answer.

Aleks [24]

Answer:

A. x^2+5x-4

Explanation:

5 0

3 years ago

Maya spent her allowance on playing an arcade game a few times and riding the Ferris wheel more than once.

BaLLatris [955]

Answer:

To write a two-variable equation, I would first need to know how much Maya’s allowance was. Then, I would need the cost of playing the arcade game and of riding the Ferris wheel. I could let the equation be cost of playing the arcade games plus cost of riding the Ferris wheel equals the total allowance. My variables would represent the number of times Maya played the arcade game and the number of times she rode the Ferris wheel. With this equation I could solve for how many times she rode the Ferris wheel given the number of times she played the arcade game.

Step-by-step explanation:

hope its right

3 0

3 years ago

For g(x)=x²-x, find g(x) when x= -8

Darya [45]

Answer:

g(-8)= -8²-8= -64-8= g(-8)=-72

Step-by-step explanation:

7 0

3 years ago