MATHEMATICS MIDDLE SCHOOL

Whats another way to write -(-9) ?

Answers

Answer 1
Answer: Two minus signs acting on the same number become a plus sign.
(Going negatively down is the same thing as going up.)

-(-9) = +9 or just plain 9.
Answer 2
Answer: -(-9)=+9 or 9

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I don really understand percentages can anyone please help
Simplify (4.5)(−9)(−1.8).
What equation do you use sum for the answer?
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The left and right page numbers on anopen book add to 333. What are the
page numbers?
and

Answers

the pages would be 166 and 167

What is the property of 93+(68+7)

Answers

associative property is the answer.

1,060,060 in expanded form

Answers

The correct way to write 1, 060, 060 in expanded form is: 

1, 000, 000 + 60, 000 + 60...  

Hope this helped :) 
1,00,000+60,000+60 in expanded form

Write an expression for the difference of 6 and k

Answers

Hey there!

The word “difference ” means “to subtract” in mathematical terms, if you’re wondering

So, this means that your expression would most likely to look like

6 - k (ANSWER)

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)
Hi,

6 - k

Hope this helps.
r3t40

Write the following using am or pm 10 to and 28minsto 7 in the evening and 20 mins to 1 at night

Answers

the first one is am

the second one is pm
the first one would be am second pm.

In a water treatment plant, water passes through a cone-shaped filter with a height of 4 m and a diameter of 9 m. The water flows from the filter into a cylinder below it. One full cone-shaped filter fills one-fifth of the cylinder.What are the dimensions of the cylinder? Use 3.14 to approximate pi.

A.
h = 3 m; r = 3 m

B.
h = 4.23 m; r = 5 m

C.
h = 15 m; r = 6 m

D.
h = 33.75 m; r = 2 m

Answers

so volume of a cone=1/3 times (area of base) times height

area of base=circle so
1/3 times pi times radius^2 times height

height=4
diameter=2radius
diameter/2=radius
9/2=4.5=radius

height=4
radius=4.5
aprox pi at 3.14
1/3 times (3.14 times 4.5^2) times 4=84.78
that's the volume of the cone

volume of cone=1/5 of cylinder

84.78=1/5cylinder
multiply both sdies  by 5
423.9=volume of cylinder

volume of cylinder=height times area of base
area of base=3.14 times r^2
v=h3.14r^2
423.9=3.14hr^2
divide both sdies by 3.14
135=hr^2
sincewe are not given the specific ratio of height to radius or such to thecone to the cylinder, we must use trial and error to elimninate wrongchoices


135=hr^2
let's try A

A
135=3(3^3)
135=3(9)
135=27
false
A is wrong

B
4.23=h  5=r
135=4.23 times 5^2
135=4.23 times 25
135=105.75
false
B is wrong


C
h=15 r=6
135=15 times 6^2
135=15 times 36
135=540
false
C is wrong


D
33.75=h 2=r
135=33.75 times 2^2
135=33.75 times 4
135=135

the answer is D since it fitst the dimentions
(9/2*9/2*4* \pi )/(3)
= (81*3.14 )/(3)
=27*3.14 (the cone's v)
so multiply 5 to the v = 135*3.14 (cylinder's v)
A:3*3*3*3.14=27*3.14 X
B:5*5*4.23*3.14=105.75*3.14 X
C:6*6*15*3.14=540*3.14 X
D:2*2*33.75*3.14=135*3.14 O
Answer: is .....D
:)
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Un bazin avand capacitatea de 63 dal se umple cu apa.Se folosesc trei robinete.Primul cu debitul de 2 ori mai mare decat al doilea si de 2 ori mai mic decat al treilea.Daca primul robinet este lasat sa curga timp de 1 ora,al doilea o jumatate de ora,iar la treilea un sfert de ora,bazinul se umple.Afla debitul fiecarui robinet.