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3 years ago

If x^2=40, what is the value of x?

Mathematics

2 answers:

seraphim [82]3 years ago

8 0

If you want the exact value:

x^2 = 40

Square root both sides:

x = sqrt (40) = 2 * sqrt (10)

If you want a rounded answer:

sqrt (40) is about 6.324

Ainat [17]3 years ago

5 0

if x^2=40 you would need to square root both sides to get x alone therefore x=6.3

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4 years ago

Find the EXACT solution to the exponential equation 500=20(1.5)^(4x)

tangare [24]

$500=20(1.5)^{4x}\implies \cfrac{500}{20}=1.5^{4x}\implies 25=1.5^{4x}
\\\\\\
\textit{now, we'll take a common log, any will do, we'll use ln()}
\\\\\\
ln(25)=ln\left(1.5^{4x} \right)\\\\
-----------------------------\\\\
log_{{ a}}\left( x^{{ b}} \right)\implies {{ b}}\cdot log_{{ a}}(x)\\\\
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6 0

4 years ago

Circle O has diameter FG and chord FH. Calculate the measure of < HFG if GH = 72°

Angelina_Jolie [31]

Given the figure in the attached image.

Circle O has diameter FG and chord FH.

If arc GH is;

$GH=72^{\circ}$

we want to find the measure of angle HFG.

Recall that from circle geometry theorems;

"The angle at the center of a circle is twice the angle at the circumference of the circle."

So;

$\begin{gathered} 2\times m\measuredangle HFG=m\measuredangle GOH \\ m\measuredangle HFG=\frac{1}{2}m\measuredangle GOH \\ m\measuredangle HFG=\frac{1}{2}GH \end{gathered}$

substituting the value of GH;

$undefined$

5 0

2 years ago

X-4/y+2=5 solve for x I NEED THIS

zhannawk [14.2K]

Answer:

x - ----- = 3

Step-by-step explanation:

I'm assuming that you mean:

x - ----- + 2 = 5

Subtracting 2 from both sides, we get

x - ----- = 3

adding 4/y to both sides yields:

x = 3 + -----

7 0

3 years ago

(40pts)

quester [9]

<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Just work with what is inside the parenthesis

Also, move around the terms to help it make more sense:

(cosA cosB - cosA cosB + sinA sinB + sinA sinB)

As you can see, the 'cosA cosB' would cancel out through subtraction.

Now we have this:

(sinA sinB + sinA sinB)

This is just two sets of sinA sinB so it can be written as:

(2 * sinA sinB)

Simply place the values outside the parenthesis back there to get the answer

SinA sinB = 1/2 * (2 * sinA sinB)

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

5 0

3 years ago