2 years ago

What is the answer for this but only 1 ANSWER?

Mathematics

2 answers:

earnstyle [38]2 years ago

6 0

Factored: 4 ( a + 2c - 2)
Standard form/simplified : 4a + 8c - 8

Shkiper50 [21]2 years ago

3 0

4a-2^3-8 is the answer I believe

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Please solve this law of indices

PilotLPTM [1.2K]

4√36^-1 = 36^-1/4

36^3/4 • 36^-1/4

=36^2/4

or √36 = 6

5 0

2 years ago

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What is the exact value of tan 30° ? Enter your answer, as a simplified fraction, in the box.

Romashka [77]

Hmmm if you don't have a Unit Circle, this is a good time to get one, many you can find online. Anyhow, check your unit circle for cos(30°) and sin(30°).

$\bf tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\qquad \qquad tan(30^o)=\cfrac{sin(30^o)}{cos(30^o)}
\\\\\\
tan(30^o)=\cfrac{\quad \frac{1}{2}\quad }{\frac{\sqrt{3}}{2}}\implies tan(30^o)=\cfrac{1}{2}\cdot \cfrac{2}{\sqrt{3}}\implies tan(30^o)=\cfrac{1}{\sqrt{3}}
\\\\\\
\stackrel{\textit{and now if we rationalize the denominator}}{\cfrac{1}{\sqrt{3}}\cdot \cfrac{\sqrt{3}}{\sqrt{3}}\implies \cfrac{\sqrt{3}}{(\sqrt{3})^2}\implies \cfrac{\sqrt{3}}{3}}$

8 0

3 years ago

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(w-9)8 need help please

nikitadnepr [17]

You need to expand the brackets eg.
(w-9)8 basically means 8 x (w-9) = 8w-72

8 0

2 years ago

What decimal is bigger 0.33 or 0.34

maxonik [38]

0.33 because it’s closer to one.

8 0

2 years ago

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PLEASE HELP

Viefleur [7K]

7x²=9+x
so
for
0=ax²+bx+c

$x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}$
so

7x²=9+x
mins 9 from both sides and minus x
7x²-1x-9=0
a=7
b=-1
c=-9

$x=\frac{-(-1)+/-\sqrt{(-1)^2-4(7)(-9)}}{2(7)}$
$x=\frac{1+/-\sqrt{(-1)^2+4(7)(9)}}{2(7)}$
so the 4th one

4 0

3 years ago

What is the answer for this but only 1 ANSWER? ​

What is the answer for this but only 1 ANSWER?