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3 years ago

Please help it’s timed

Mathematics

1 answer:

jeka57 [31]3 years ago

8 0

Answer: The answer is 13/54

Step-by-step explanation:

52 people out of 216 do not want the stadium, so the fraction would be 52/216. 52/216 simplified would be 13/54.

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What is the intersection of planes D E C and B E C?

Licemer1 [7]

E would be the intersection point

7 0

3 years ago

Write the following polynomial in standard from, then label the degree: <br> -5-5x^2+8x-3x^3

ddd [48]

When putting polynomials in standard form we arrange them from the term with the highest power to the lowest power.

This polynomial would be arranged: -3x^3-5x^2+8x-5

The degree of a polynomial is the power of the highest term so the degree of this polynomial is three.

5 0

3 years ago

Read 2 more answers

How do you prove this?

frozen [14]

Answer:

Show ΔBCD ≅ ΔGFE, so ∠C ≅ ∠F. Base angle of an isosceles triangle are congruent, so ΔACF is isosceles.

Step-by-step explanation:

Informally, subtract DE from CE and DF. This will show CD ≅ EF.

Then ΔBCD ≅ ΔGFE by the HL theorem for right triangles.

Corresponding parts of congruent triangles are congruent, namely the angles C and F.

Since base angles of ΔACF are congruent, it is isosceles.

3 0

2 years ago

Linda paid $48 for a jacket that was on sale for 25% of the original price. What was the original price of the jacket

kap26 [50]

$48/x 25%/100

48 x 100= 4800
4800 / 25= 192
answer: $192

3 0

3 years ago

PLS HELP ILL GIVE BRAINLIEST

inysia [295]

<h3>Answer: 14x - 8</h3>

=======================================================

Explanation:

I'll use the quadratic formula to find the roots or x intercepts. This slight detour allows us to factor without having to use guess-and-check methods.

The equation is of the form ax^2+bx+c = 0

a = 12
b = -11
c = -5

This leads to...

$x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(-11)\pm\sqrt{(-11)^2-4(12)(-5)}}{2(12)}\\\\x = \frac{11\pm\sqrt{361}}{24}\\\\x = \frac{11\pm19}{24}\\\\x = \frac{11+19}{24} \ \text{ or } \ x = \frac{11-19}{24}\\\\x = \frac{30}{24} \ \text{ or } \ x = \frac{-8}{24}\\\\x = \frac{5}{4} \ \text{ or } \ x = -\frac{1}{3}$

Now use those roots to form these steps

$x = \frac{5}{4} \ \text{ or } \ x = -\frac{1}{3}\\\\4x = 5 \ \text{ or } \ 3x = -1\\\\4x - 5 =0 \ \text{ or } \ 3x+1 = 0\\\\(4x-5)(3x+1) = 0$

Refer to the zero product property for more info.

Therefore, the original expression factors fully to (4x-5)(3x+1)

Use the FOIL rule to expand it out and you should get 12x^2-11x-5 again.

----------------------------------------------

We did that factoring so we could find the side lengths of the rectangle.

I'm using the fact that area = length*width

L = length = 4x-5
W = width = 3x+1

The order of length and width doesn't matter.

From here, we can then compute the perimeter of the rectangle

P = 2(L+W)

P = 2(4x-5+3x+1)

P = 2(7x-4)

P = 14x - 8

6 0

2 years ago