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3 years ago

How do you do this page

Mathematics

1 answer:

andrew11 [14]3 years ago

8 0

13. Is 12 and 22. Is 11

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Decrease £6,000 by 4% and then by 5%.

Brrunno [24]

The answer is exactly £5,472

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2 years ago

a room contains 156.1m of air . if the room is 8.31m long and 5.72m wide . use tabe to calculate it height

irga5000 [103]

Answer:

height=3.28m

Step-by-step explanation:

air means volume of room

let the height of room be x.

so, volume of room= 156.1 m³

8.31*5.72*x=156.1m³

x =3.28m

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3 years ago

Simplify the expression 4x+6x-11x+2+x2-19

Artyom0805 [142]

4x+6x-11x+2+x2-19

simplified the answer is

X2-X-17

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3 years ago

Read 2 more answers

Given: SV || TU and SVX = UTX

Vladimir [108]

Answer: 2 is a given which is (SV | | TU)

I need help with the others.

Step-by-step explanation:

7 0

3 years ago

The area of a square in square feet is

Sedaia [141]

Answer:

Part 1) The expression for the perimeter is $P=4(25z-3)$ or $P=100z-12$

Part 2) The perimeter when z = 15 ft. is $P=1,488\ ft$

Step-by-step explanation:

Part 1)

we have

$625z^{2}-150z+9$

Find the roots of the quadratic equation

Equate the equation to zero

$625z^{2}-150z+9=0$

Complete the square

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$625z^{2}-150z=-9$

Factor the leading coefficient

$625(z^{2}-(150/625)z)=-9$

$625(z^{2}-(6/25)z)=-9$

Complete the square. Remember to balance the equation by adding the same constants to each side

$625(z^{2}-(6/25)z+(36/2,500))=-9+(36/4)$

$625(z^{2}-(6/25)z+(36/2,500))=0$

Rewrite as perfect squares

$625(z-6/50)^{2}=0$

$z=6/50=0.12$ -----> root with multiplicity 2

The area is equal to

$A=625(z-0.12)(z-0.12)=[25(z-0.12)][25(z-0.12)]=(25z-3)^{2}$

The length side of the square is $b=(25z-3)$

therefore

The perimeter is equal to

$P=4b$

$P=4(25z-3)$

$P=100z-12$

Part 2) Find the perimeter when z = 15 ft.

we have

$P=100z-12$

substitute the value of z

$P=100(15)-12=1,488\ ft$

4 0

3 years ago