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3 years ago

If x Is a real number such that x3 = 64, the x2 + x equals what?

Mathematics

1 answer:

Annette [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Assuming that the equation is x³ = 64, that can be solved by putting cube root on both sides like so: ∛(x³) = ∛64, which simplifies to <em>x = 4</em>.

Plugging that into our expression gives us <em>4² + 4</em>, which is 20.

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The sum of the measures of the interior angles of a polygon is 1140. What kind of polygon is it ?

sukhopar [10]

Answer:

5) Regular decagon. 6) Yes.

Step-by-step explanation:

Number 6 is yes bc the interior angles of a triangle have to equal 180, and 1+2+177 equals 180.

5 0

3 years ago

Is the complement of a congruent angle it’s supplement

Vedmedyk [2.9K]

Complementary angles add up to 90 degrees. Supplementary angles add up to 180 degrees, so no.

7 0

3 years ago

Write the equation of the line that is perpendicular to y=2x-7 and passes through the point (6, 5)

Pani-rosa [81]

Answer:

Step-by-step explanation:

we are given a equation of a line

we want to figure out the equation of the perpendicular line passes through the <u>(</u><u>6</u><u>,</u><u>5</u><u>)</u><u> </u>points

in order to do so

recall that,

$\displaystyle m_{ \text{perpendicular}} = - \frac{1}{m}$

we got from our given equation that m=2

because equation of a line is y=mx+b

thus

$\displaystyle m_{ \text{perpendicular}} = - \frac{1}{2}$

remember that, when we want to figure out perpendicular line or parallel line we should the formula given by

$\displaystyle y - y_{1} = m(x - x_{1})$

since we got our perpendicular m is -½, $x_1=6$ and $y_1=5$ , substitute

$\displaystyle y - 5 = - \frac{1}{2} (x - 6)$

to get the perpendicular equation you should simplify the above equation to y=mx+b form

distribute -½:

$\displaystyle y - 5 = - \frac{1}{2} x + 3$

add 5 to both sides:

$\displaystyle y = - \frac{1}{2} x + 8$

hence,

our answer choice is B

3 0

3 years ago

Read 2 more answers

Help if you’re feeling generous today!! thank youu

ra1l [238]

Answer:

<h3>The answer is option 3 </h3>

Step-by-step explanation:

4x² - 2y

when

x = - 2 and y = - 1

Substitute the values of x and y into the expression and simplify

That's

$4( - 2)^{2} - 2( - 1) \\ = 4(4) + 2 \\ = 16 + 2$

We have the final answer as

Hope this helps you

5 0

3 years ago

a. Are the following triangles congruent? If so, which postulate or theorem proves this? b. What transformation moved one triang

xenn [34]

Answer:

Yes by SAS

Step-by-step explanation:

If you look at the triangles they have 2 side lenght in common (and since it is a right triange they have all the sides in commmon) and they share an angel

In other words 2 sides are conurent with an angle betwene them.

You would need to rotait the shape 90 degrese.

4 0

2 years ago