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alexgriva [62]
3 years ago
14

Write two expressions that are equivalent to the expression below. (9- c) +(9 -c)+(9- c) +(9- c)

Mathematics
2 answers:
zvonat [6]3 years ago
5 0

Answer:

4( 9  - c)

and

36 - 4c

Step-by-step explanation:

(9- c) +(9 -c)+(9- c) +(9- c)\\\\= ( 9 - c)( 1 + 1 + 1 +1)\\\\=(9 -c) \times 4

or \\\\= 36  - 4c

GREYUIT [131]3 years ago
4 0

Answer:

{ \tt{4(9 - c)}} \\ and \\ { \tt{36 - 4c}} \\  \\ { \underline{ \blue{ \tt{becker \: jnr}}}}

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FromTheMoon [43]

Answer:

The plane is now flying at an altitude of 42,250 feet.

Step-by-step explanation:

Initially, he is at an altitude of 40,000 feet.

Descends at a rate of 2,000 feet / minute for 3 minutes.

So his altitude is now:

40,000 - 3*2,000 = 34,000

Ascends at a rate of 1,500 feet minute for 5.5 minutes.

The plane is now flying at an altitude of:

34,000 + 1,500*5.5 = 42,250

The plane is now flying at an altitude of 42,250 feet.

5 0
3 years ago
What is the solution (a, b) to this system of linear equations?<br><br> 3a+6b=45<br><br> 2a-2b=-12
xxTIMURxx [149]

Answer:

a =1, b=7

Step-by-step explanation:

hope this helps

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3 years ago
The pizza costs £18.00. Mark agrees to pay 1/4 of the cost. Samuel agrees to pay 1/2 of the cost Imran agrees to pay the rest. H
MariettaO [177]

Answer:

4.5 or 4.50 dollars

Step-by-step explanation:

if we split 18.00 into \frac{1}{4} each part of the fraction would be 4.5 . or 4.50

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add those both and you'll get 13.50 $

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3 0
3 years ago
400 to 5 in simplest form​
zhenek [66]

Answer:

400 to 5 in simplest form​

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator. GCD of 400 and 5 is 5.

400 ÷ 55 ÷ 5.

Reduced fraction: 801. Therefore, 400/5 simplified is 80/1.

7 0
3 years ago
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djverab [1.8K]
£3000 x 0.4 to the power of 3= £192
£192 + £3000 = £3192
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