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4 years ago

14

PLEASE HELP PRECALC WILL MARK BRAINLIEST

1 answer:

Verizon [17]4 years ago

4 0

Answer:

da heck

Step-by-step explanation:

?????

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What is the factored form of the expression?<br><br> d^2 = 36d + 324

Veseljchak [2.6K]

Answer:

$(x-43.45)(x+7.45)=0$

Step-by-step explanation:

We have the quadratic equation $d^{2}=36d+324$ i.e. $d^{2}-36d-324=0$

As, the roots of the quadratic equation $ax^{2}+bx+c=0$ are given by $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ .

So, from the given equation, we have,

a = 1, b = -36 , c = -324.

Substituting the values in $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ , we get,

$x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}$

i.e. $x=\frac{36\pm \sqrt{1296+1296}}{2}$

i.e. $x=\frac{36\pm \sqrt{2592}}{2}$

i.e. $x=\frac{36\pm 50.9}{2}$

i.e. $x=\frac{36+50.9}{2}$ and $x=\frac{36-50.9}{2}$

i.e. $x=\frac{86.9}{2}$ and $x=\frac{-14.9}{2}$

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be $(x-43.45)(x+7.45)=0$

3 0

3 years ago

The graph of a linear system is shown. What is the solution the linear system?

Mkey [24]

Answer:

y=3x-1 and y=3x+1

Step-by-step explanation:

y=mx+b form

m stands for the slope which is rise over run.

b stands for the y intercept. where the line intersects with the y axis.

7 0

3 years ago

DEAR SIRS AND MISSES, PLEASE HELP ME!

GaryK [48]

Volume of a cone= $\pi$ r^2*h/3
$\pi$ *3^2*6/3=56.55

volume fo a sphere = 4/3 $\pi$ r^3
4/3*pi*1.5^3=14.14

56.55-14.14=42.41

4 0

3 years ago

I need it step by step

elena-s [515]

Answer:

Step-by-step explanation:

we want y by itself...sooo

y - 19 = - $\frac{6}{10}$ (x - (-5))

y - 19 = - $\frac{6}{10}$ (x+5)

y - 19 = - $\frac{6}{10}$ x - $\frac{6}{2}$

y = - $\frac{6}{10}$ x - 3 +19

y = - $\frac{6}{10}$ x + 16

4 0

3 years ago

Write the equation in slope intercept form points (-11,6) (5,-2)

love history [14]

The slope intercept formula would be $- \frac{1}{2}$

6 0

3 years ago