2 years ago

Expand 8x - 2x + 3(-4x+9)

Mathematics

2 answers:

Trava [24]2 years ago

7 0

Answer:

x ^3 + 6 x ^2 + 12 x + 8

stiks02 [169]2 years ago

3 0

Answer:

Step-by-step explanation:

Always do parentheses first!

-4x+9=-5x

8x-2x=6x

-5x-6x+3=

x+3=4

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Use a calculator to find the trigonometric ratio to four decima place tan 23

Aneli [31]

Answer:

=0.4245 (4dp)

Step-by-step explanation:

tan(23)=0.4244748162

=0.4245 (4dp)

I hope this helps!

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2 years ago

A=pm+z solve for m<br> m=?

Leno4ka [110]

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3 years ago

Evaluate<br> 2^9 over 2^5

s2008m [1.1K]

Answer:

2^4 or 16

Step-by-step explanation:

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8 0

2 years ago

Read 2 more answers

How to show these 2 problems are inverses

nataly862011 [7]

$\bf \begin{cases}
f(x)=\sqrt[3]{7x-2}\\\\
g(x)=\cfrac{x^3+2}{7}
\end{cases}\\\\
-----------------------------\\\\
now
\\\\
f[\ g(x)\ ]\implies f\left[ \frac{x^3+2}{7} \right]\implies \sqrt[3]{7\left[ \frac{x^3+2}{7} \right]-2}\implies \sqrt[3]{x^3+2-2}
\\\\\\
\sqrt[3]{x^3}\implies x\\\\
-----------------------------\\\\
or
\\\\
g[\ f(x)\ ]\implies g\left[\sqrt[3]{7x-2}\right]\implies \cfrac{\left[\sqrt[3]{7x-2}\right]^3+2}{7}
\\\\\\
\cfrac{7x-2+2}{7}\implies \cfrac{7x}{7}\implies x$

thus f[ g(x) ] = x indeed, or g[ f(x) ] =x, thus they're indeed inverse of each other

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2 years ago

ANSWER NEEDED QUICKLY, RIGHT ANSWER WILL RECEIVE BRAINLIEST ♦️

Oksi-84 [34.3K]

111km

the ratio is 1:15 so you do 7.4×15

7 0

2 years ago

Read 2 more answers