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3 years ago

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Mathematics

2 answers:

xxTIMURxx [149]3 years ago

5 0

D. 31 27+ x = 35+ 23
= 58
-27 = -27
x = 31

Check: 27+31 = 35 + 23
58 = 58

jeyben [28]3 years ago

4 0

Your answer is gonna be D. 100%

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The letters in VIRGINIA are each written on a separate card. Mark picks one card at random, keeps it, and then picks a second ca

andreev551 [17]

Answer:

okay I would say 1/4

Step-by-step explanation:

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3 years ago

The vertex of this parabola is at (-5, -2). When the x-value is -4, the

Advocard [28]

Answer:

The answer to your question is letter A

Step-by-step explanation:

Data

Vertex = (-5, -2)

Point = (-4, 2)

This is a vertical parabola the opens upwards.

The equation is

(x - h)² = 4p(y - k)

Substitution

(-4 + 5)² = 4p (2 + 2)

Simplification

1² = 4p(4)

1 = 16p

p = 1/16

Equation of the parabola

(x + 5)² = 4/16(y + 2)

x² + 10x + 25 = 1/4y + 1/2

Conclusion

The coefficient of the squared expression is 1

7 0

3 years ago

True or false: The base of a polyhedron is also a face of the polyhedron

Katena32 [7]

True: A face of a polyhedron is simply a flat boundary that helps forms the 3D solid.

4 0

3 years ago

What are all of the real roots of the following polynomial? f(x) = x4 - 13x2 + 36

GREYUIT [131]

ANSWER

A. -3, -2, 2, and 3

EXPLANATION

The given polynomial function is,

$f(x) = {x}^{4} - 13 {x}^{2} + 36$

To find the real roots, we equate the function to zero to obtain;

${x}^{4} - 13 {x}^{2} + 36 = 0$

We can solve this equation as a quadratic equation in
${x}^{2}.$

Thus we rewrite the equation as,

$({x}^{2})^{2} - 13 {x}^{2} + 36 = 0$

We split the middle term to get,

$({x}^{2})^{2} - 9 {x}^{2} - 4 {x}^{2} + 36 = 0.$

We factor to get,

${x}^{2} ( {x}^{2} - 9) - 4( {x}^{2} - 9) = 0$

We factor to get,

$( {x}^{2} - 9)( {x}^{2} - 4) = 0$

Either

${x}^{2} - 9 = 0$
or

${x}^{2} - 4 = 0$

$x = \pm \sqrt{9} \: or \: x = \pm \sqrt{4}$
$x = \pm3 \: or \: x = \pm2$

$x=-3,-2,2,3$

The correct answer is A

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4 years ago

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