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3 years ago

WILL GIVE BRAINLIEST

Mathematics

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Answer:

2(20-64)

Step-by-step explanation:

4*10-64*2

40-128

2(20-64)

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An interior angle of a regular polygon has a measure of 135° how many sides does it have

butalik [34]

8 sides

the exterior angle = 180° - 135° = 45° ( exterior/ interior are supplementary )

the sum of the exterior angles of a polygon = 360°

number of sides = $\frac{360}{45}$ = 8

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3 years ago

Omar broke a cell sample into 8 batches, each

Nady [450]

Step-by-step explanation:

we have 8 equally "heavy" batches.

one weighs 3.9 × 10^-10 g

so, the total sample then weighed

8 × 3.9 × 10^-10 = 31.2 × 10^-10 = 3.12 × 10^-9 g

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2 years ago

URGENT, PLZ HELP ASAP! TYSM! Plz help solve without using algebra plz, my teacher wouldn’t allow us to use it.

d1i1m1o1n [39]

First, divide 4960 by 3 and assign the answer to all three containers. Then, subtract 4 from L and add 4 to J.

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$J=1657.3$
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3 years ago

Find the number of ways to purchase 3 different kinds of drinks from a selection of 10 drinks.

Genrish500 [490]

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3 years ago

At what values of x does f(x) = x^3 - 2x^2 -4x+1 satisfy the mean value theorwm on [0,1]

denis-greek [22]

Answer:

x=1/3

Step-by-step explanation:

A function f is given as

$f(x) = x^3-2x^2-4x+1$ in the interval [0,1]

This function f being an algebraic polynomial is continuous in the interval [0,1] and also f is differntiable in the open interval (0,1)

Hence mean value theorem applies for f in the given interval

$f(1) = 1-2-4+1 = -4\\f(0) = 1$

The value

$\frac{f(1)-f(0)}{1-0} =\frac{-4-1}{1} =-5$

Find derivative for f

$f'(x) = 3x^2-4x-4$

Equate this to -5 to check mean value theorem

$3x^2-4x-4=-5\\3x^2-4x+1=0\\\\(x-1)(3x-1) =0\\x= 1/3 : x = 1$

We find that 1/3 lies inside the interval (0,1)

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3 years ago