2 years ago

It's math again! Please help!

Mathematics

1 answer:

seraphim [82]2 years ago

7 0

4. $4x^{3}-6 x^{2}+9$

5. $-2x^3+2x^2+9x$

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48 divided by4 +c^3, c=2

KatRina [158]

Answer:

Step-by-step explanation:

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2 years ago

In triangle abc, m of acb = 90, cd is perpendicular to ab , m of acd is 60. and bd is 5 cm. find ad

weeeeeb [17]

Let us draw a picture to make the things more clear.

Attached is the image.

We have been given that

$\angle acd = 60 ^{\circ}$

Therefore, we have

$\angle dcb =90- 60= 30 ^{\circ}$

Now, in triangle bcd, we have

$\tan30 = \frac{5}{cd}\\
\\
\frac{1}{\sqrt 3}=\frac{5}{cd}\\
\\
cd=5\sqrt 3$

Now, in triangle acb, we have

$tan 60 = \frac{ad}{5\sqrt3} \\
\\
\sqrt 3= \frac{ad}{5\sqrt3}\\
\\
ad= 5\sqrt3 \times \sqrt 3\\
\\
ad= 5\times 3\\
\\
ad=15$

Thus, ad is 15 cm.

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2 years ago

How is the number 0.000005 written in scientific notation?

nirvana33 [79]

Answer: The answer is A. 5.0 x 10-5

i hope it helps. Have a nice day

Step-by-step explanation:

the decimal number 0.00005 written in scientific notation is 5 × 10-5

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1 year ago

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If f(x)=2x+1 and g(x)=(x^2)-7, find (f/g)(x).

alexdok [17]

$f(x)=2x+1;\ g(x)=x^2-7\\\\\left(\dfrac{f}{g}\right)(x)=\dfrac{f(x)}{g(x)}\\\\\boxed{\left(\dfrac{f}{g}\right)(x)=\dfrac{2x+1}{x^2-7}}$

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I need to know what 12 + 5 - (6×24) equals

Morgarella [4.7K]

Answer:

-127

Step-by-step explanation:

first multiplied the ones in parentheses

12+5-144

then you add

12+5=17

17-144=-127

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