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3 years ago

Jacky used the

Mathematics

1 answer:

Semenov [28]3 years ago

8 0

Answer:

x = 1/20s so s=0

Step-by-step explanation:

1. 80xs/80s = 4/80s

2. you will get: 1/20s so technically 2=0

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I need this assignment done will give brainliest and extra points.

Travka [436]

Answer:

1a.2.5x³-2.25x²+3.5x-1.5

1b.No, they aren't equal. (worked out the product for both and they weren't equal, see below)

2a.-2x⁶+7x⁴+3x³-3x²+11x+20

2b.Yes. When multiplying, it doesn't matter which term/expression you put first

3. The equation has two solutions: x=-2, x=3

Step-by-step explanation:

1. (a)

(0.5x-0.25)(5x²-2x+6)

0.5x(5x²-2x+6)-0.25(5x²-2x+6)

2.5x³-x²+3x -1.25x²+0.5x-1.5

2.5x³-2.25x²+3.5x-1.5

(b)

(0.25x-0.5)(5x²-2x+6)

0.25x(5x²-2x+6)-0.5(5x²-2x+6)

1.25x³-0.5x²+1.5x -2.5x²+x-3

1.25x³-3x²+2.5x-3

This is not equal to our answer for 1(a), so we can see they're not the same.

2(a)

(-2x³+x-5)(x³-3x-4)

-2x³(x³-3x-4) +x(x³-3x-4) -5(x³-3x-4)

-2x⁶+6x⁴+8x³ +x⁴-3x²-4x -5x³+15x+20

-2x⁶+7x⁴+3x³-3x²+11x+20

(b)

Yes. When multiplying, it doesn't matter which term/expression you put first: xy=yx. For example, 2(3)=6 and 3(2)=6.

2x²-2x-12=0

(divide each term by 2)

x²-x-6=0

(x+2)(x-3)=0

Anything multiplies by zero is zero, so either x+2=0 or x-3=0

If x+2=0, x=-2. If x-3=0, x=3.

The equation has two solutions: x=-2, x=3

8 0

3 years ago

What is the approximate length of arc s on the circle below? use 3.14 for . round your answer to the nearest tenth. 14.1 in. 22.

Maksim231197 [3]

I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
PLEASE SEE ATTACHED IMAGE.

The length of an arc, by definition is given by:
s = R * theta
Where,
R: radio
theta: angle of the bow.
We then have to replace:
s = (6) * (135 * (pi / 180))
s = 14.1 in
Answer:
The length of the arc s is:
s = 14.1 in

5 0

3 years ago

Read 2 more answers

-0.55 inches, 0.75 inches, 3.25 inches, -0.75 inches, and 0.7 inches.

aleksandrvk [35]

Answer:

3.25 inches, 0.75 inches, 0.7 inches, -0.55 inches, -0.75 inches

hope it help <3

4 0

3 years ago

In which of the following cases is productive efficiency not satisfied? Assume we start at a point on the PPF between two produc

DaniilM [7]

Answer:

A. The economy switches to producing less of one product without increasing the production of the other product

Step-by-step explanation:

PPC is the graphical representation of product combinations that an economy can produce, given resources & technology. It is downward sloping because given resources & technology, production of a good can be increased by decreasing production of other good.

It is based on assumption that resources are efficiently utilised. Points on PPC show resources efficient utilisation, Points under PPC show under utilisation, Points outside PPC are beyond country's productive capacity.

If country produces less of a good without increasing production of other goods, implying wasted resources & production below PPC. This case doesn't satisfy productive efficiency

Other cases : Producing more of a good & less of other is just re allocative movement on the PPC itself. Production point at PPF intersection with either axis implies economy is producing only the good on that axis.

In all the cases except A. satisfy the 'productive efficiency'

3 0

3 years ago

-17-5(x+3)=3x plz help

katovenus [111]

Start by distributing the -5 into the x and 3
-17-5x-15=3x
add like terms
-5x-32=3x
add 32 to both sides
-5x=3x+32
subtract 3x from both
-8x=32
divide both by -8
x=-4

7 0

3 years ago

Read 2 more answers