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3 years ago

15

Need help on this please? not sure how to do this

1 answer:

igomit [66]3 years ago

4 0

1. The formula for circumference is 2πr. From that formula you can see that anything you do to the radius (in terms of multiplying), you do to the circumference in the same way. Double the radius, you double the circumference, triple the radius, you triple the circumference. This is because the 'r' is in the formula without any exponent.

2. The formula for the area is πr². This is different. Now if you double the radius (multiply it by 2), the area is multiplied by 2², so by 4. The power of 2 in the formula works on the multiplication factor you apply. If you make the radius p times as big, the area becomes p² times as big.

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What is the additive inverse of the polynomial –9xy2 + 6x2y – 5x3?

neonofarm [45]

Answer:

I believe the answer may be 9xy2 - 6x2y + 5x3

Step-by-step explanation:

9 0

3 years ago

Given: tangent A = negative StartRoot 15 EndRoot What is the value of Tangent (A minus StartFraction pi over 4 EndFraction)? Sta

Debora [2.8K]

Answer:

$\tan(A - \frac{\pi}{4}) = \frac{-\sqrt{15}- 1}{1 -\sqrt{15}}$

Step-by-step explanation:

Given

$\tan A =-\sqrt{15$

Required

Find $\tan(A - \frac{\pi}{4})$

In trigonometry:

$\tan(A - B) = \frac{\tan A - \tan B}{1 + \tan A \tan B}$

This gives:

$\tan(A - \frac{\pi}{4}) = \frac{\tan A - \tan \frac{\pi}{4}}{1 + \tan A \tan \frac{\pi}{4}}$

$tan \frac{\pi}{4} = 1$

So:

$\tan(A - \frac{\pi}{4}) = \frac{\tan A - 1}{1 + \tan A * 1}$

$\tan(A - \frac{\pi}{4}) = \frac{\tan A - 1}{1 + \tan A}$

This gives:

$\tan(A - \frac{\pi}{4}) = \frac{-\sqrt{15}- 1}{1 -\sqrt{15}}$

3 0

3 years ago

Read 2 more answers

Distributive property

timama [110]

Answer:

9 x 6= 9 x ( 3+3 )

= 9 x 3 + 9 x 3

= 27 + 27

= 54

Step-by-step explanation:

3 0

2 years ago

Wich big 3/8 2/4 wioehjkmx

makkiz [27]

Answer:

no it's 2/4

Step-by-step explanation:

if 3/8 had 1/8 more then it would be bigger

and if you look at both at the fractions, (don't have them, sorry) you would see that 2/4 would have more shaded, so 2/4 is bigger.

7 0

3 years ago

What lines are skew to EF?<br> What plane are parallel to plane ADE?

amm1812

The skew lines are CG, DH, AD, BC.

The parallel lines are BC, EH, FG.

<h3>What is skew lines?</h3>

Two or more lines which have no intersections but are not parallel.

As, by the definition

The lines skew to EF is CG, DH, AD, BC

The parallel to AD is BC, EH, FG.

Learn more about skew lines here:

brainly.com/question/18701027

#SPJ1

8 0

2 years ago